* NEWS: Update for pre-release

Make a spin() method available when compiled in maintainer mode.
If a file exists in the working directory with a specific name,
make will sleep until the file is deleted.

Ensure that maintainer mode is enabled on Windows, using the same
algorithm we use on POSIX / autoconf systems.

* build_w32.bat: If maintMakefile exists, enable maintainer mode.
* src/main.c (main): Replace Windows-only suspend flag with spin().
* src/makeint.h: A SPIN() macro calls spin() in maintainer mode.
* src/misc.c (spin): If a spin file exists sleep until it's deleted.

.ccls

@@ -0,0 +1,27 @@
+clang
+%h --include=makeint.h
+-DHAVE_CONFIG_H
+-Isrc
+-Ilib
+-DLIBDIR="/usr/local/lib"
+-DINCLUDEDIR="/usr/local/include"
+-DLOCALEDIR="/usr/local/share/locale"
+-DMAKE_MAINTAINER_MODE
+-pthread
+-isystem
+/usr/include/guile/2.0
+-Wall
+-Wextra
+-Werror
+-Wwrite-strings
+-Wshadow
+-Wdeclaration-after-statement
+-Wbad-function-cast
+-Wformat-security
+-Wtype-limits
+-Wunused-but-set-parameter
+-Wlogical-op
+-Wpointer-arith
+-Wignored-qualifiers
+-Wformat-signedness
+-Wduplicated-cond

.dir-locals.el

@@ -0,0 +1,18 @@
+(
+ (nil . ((bug-reference-bug-regexp . "\\(\\)\\bSV[- ]\\([0-9]+\\)")
+         (bug-reference-url-format . "https://savannah.gnu.org/bugs/?%s")
+         (ccls-initialization-options . (:index (:threads 6
+                                                 :initialBlacklist ("/make-[0-9]" "tests/work/" "/\\.deps" "/\\..*cache" "/\\.git"))))
+         (lsp-file-watch-ignored . ("/\\.git$"
+                                    "/\\..*cache$"
+                                    ;; autotools content
+                                    "/\\.deps$"
+                                    "/autom4te\\.cache$"
+                                    "/build-aux$"
+                                    ;; make-specific content
+                                    "/doc/manual$"
+                                    "/tests/work$"
+                                    "/make-[0-9]"))
+         ))
+ (c-mode . ((c-file-style . "gnu")))
+)

.gitignore

@@ -0,0 +1,71 @@
+# Development artifacts
+ID
+TAGS
+GPATH
+GRTAGS
+GTAGS
+.*cache
+.*gdbinit
+.gdb_history
+.vscode
+*~
+#*
+.#*
+
+# Configure artifacts
+ABOUT-NLS
+INSTALL
+Makefile
+Makefile.in
+Basic.mk
+aclocal.m4
+autom4te.cache/
+build-aux/
+config.cache
+config.h
+config.h.in
+config.log
+config.status
+configure
+/mk/Posix.mk
+stamp-h1
+.dirstamp
+
+# Build artifacts
+.deps/
+gmk-default.h
+loadavg
+make
+*.i
+*.o
+*.a
+*.exe
+*.dll.a
+*.obj
+*.lib
+*.pdb
+*.sbr
+
+# Windows build artifacts
+WinDebug/
+WinRel/
+GccDebug/
+GccRel/
+
+# Distribution artifacts
+.dep_segment
+.check-git-HEAD
+ChangeLog
+README
+README.DOS
+README.OS2
+README.W32
+build.sh
+build.sh.in
+config.ami
+config.h-vms
+config.h.W32
+configh.dos
+make-[0-9]*/
+make-[0-9]*.tar.*
+checkcfg.*.log

AUTHORS

@@ -0,0 +1,89 @@
+-----------------------------------
+
+GNU make development up to version 3.75 by:
+    Roland McGrath <roland@gnu.org>
+
+
+Development starting with GNU make 3.76 by:
+    Paul D. Smith <psmith@gnu.org>
+
+    Additional development starting with GNU make 3.81 by:
+        Boris Kolpackov <boris@kolpackov.net>
+
+
+GNU Make User's Manual
+  Written by:
+    Richard M. Stallman <rms@gnu.org>
+
+  Edited by:
+    Roland McGrath <roland@gnu.org>
+    Bob Chassell <bob@gnu.org>
+    Melissa Weisshaus <melissa@gnu.org>
+    Paul D. Smith <psmith@gnu.org>
+
+-----------------------------------
+GNU make porting efforts:
+
+  Port to VMS by:
+      Klaus Kaempf <kkaempf@progis.de>
+      Hartmut Becker <Hartmut.Becker@hp.com>
+      Archive support/Bug fixes by:
+        John W. Eaton <jwe@bevo.che.wisc.edu>
+        Martin Zinser <zinser@decus.decus.de>
+
+  Port to Amiga by:
+      Aaron Digulla <digulla@fh-konstanz.de>
+
+  Port to MS-DOS (DJGPP), OS/2, and MS-Windows (native/MinGW) by:
+      DJ Delorie <dj@delorie.com>
+      Rob Tulloh <rob_tulloh@tivoli.com>
+      Eli Zaretskii <eliz@gnu.org>
+      Jonathan Grant <jg@jguk.org>
+      Andreas Beuning <andreas.buening@nexgo.de>
+      Earnie Boyd <earnie@uses.sf.net>
+      Troy Runkel <Troy.Runkel@mathworks.com>
+
+-----------------------------------
+Other contributors:
+
+  Janet Carson <janet_carson@tivoli.com>
+  Howard Chu <hyc@highlandsun.com>
+  Ludovic Courtès <ludo@gnu.org>
+  Paul Eggert <eggert@twinsun.com>
+  Ramon Garcia Fernandez <ramon.garcia.f@gmail.com>
+  Klaus Heinz <kamar@ease.rhein-main.de>
+  Michael Joosten
+  Jim Kelton <jim_kelton@tivoli.com>
+  David Lubbren <uhay@rz.uni-karlsruhe.de>
+  Tim Magill <tim.magill@telops.gte.com>
+  Markus Mauhart <qwe123@chello.at>
+  Greg McGary <greg@mcgary.org>
+  Thien-Thi Nguyen <ttn@gnuvola.org>
+  Thomas Riedl <thomas.riedl@siemens.com>
+  Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+  Carl Staelin (Princeton University)
+  Ian Stewartson (Data Logic Limited)
+  David A. Wheeler <dwheeler@dwheeler.com>
+  David Boyce <dsb@boyski.com>
+  Frank Heckenbach <f.heckenbach@fh-soft.de>
+  Kaz Kylheku <kaz@kylheku.com>
+
+With suggestions/comments/bug reports from a cast of ... well ...
+hundreds, anyway :)
+
+-------------------------------------------------------------------------------
+Copyright (C) 1997-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.

Basic.mk.template

@@ -0,0 +1,135 @@
+# Basic GNU -*-Makefile-*- to build GNU make
+#
+# NOTE:
+# If you have no 'make' program at all to process this makefile:
+#   * On Windows, run ".\buildw32.bat" to bootstrap one.
+#   * On MS-DOS, run ".\builddos.bat" to bootstrap one.
+#
+# Once you have a GNU make program created, you can use it with this makefile
+# to keep it up to date if you make changes, as:
+#
+#   make.exe -f Basic.mk
+#
+# Copyright (C) 2017-2019 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+all:
+
+src = src/
+lib = lib/
+
+make_SOURCES = %make_SOURCES%
+glob_SOURCES = %glob_SOURCES%
+loadavg_SOURCES = %loadavg_SOURCES%
+alloca_SOURCES = %alloca_SOURCES%
+w32_SOURCES = %w32_SOURCES%
+vms_SOURCES = %vms_SOURCES%
+amiga_SOURCES = %amiga_SOURCES%
+
+posix_SOURCES = $(src)posixos.c
+remote_SOURCES = $(src)remote-stub.c
+
+OUTDIR =
+SRCDIR = .
+
+OBJEXT = o
+EXEEXT =
+
+PREFIX = /usr/local
+INCLUDEDIR = $(PREFIX)/include
+LIBDIR = $(PREFIX)/lib
+LOCALEDIR = $(PREFIX)/share
+
+PROG = $(OUTDIR)make$(EXEEXT)
+
+prog_SOURCES = $(make_SOURCES) $(remote_SOURCES)
+
+BUILT_SOURCES =
+
+OBJECTS = $(patsubst %.c,$(OUTDIR)%.$(OBJEXT),$(prog_SOURCES))
+
+OBJDIRS = $(addsuffix .,$(sort $(dir $(OBJECTS))))
+
+# Use the default value of CC
+LD = $(CC)
+
+# Reserved for command-line override
+CPPFLAGS =
+CFLAGS = -g -O2
+LDFLAGS =
+
+extra_CPPFLAGS = -DHAVE_CONFIG_H -I$(OUTDIR)src -I$(SRCDIR)/src -I$(OUTDIR)lib -I$(SRCDIR)/lib \
+	-DLIBDIR=\"$(LIBDIR)\" -DINCLUDEDIR=\"$(INCLUDEDIR)\" -DLOCALEDIR=\"$(LOCALDIR)\"
+extra_CFLAGS =
+extra_LDFLAGS = $(extra_CFLAGS) $(CFLAGS)
+
+C_SOURCE = -c
+OUTPUT_OPTION = -o $@
+LINK_OUTPUT = -o $@
+
+# Command lines
+
+# $(call COMPILE.cmd,<src>,<tgt>)
+COMPILE.cmd = $(CC) $(extra_CFLAGS) $(CFLAGS) $(extra_CPPFLAGS) $(CPPFLAGS) $(TARGET_ARCH) $(OUTPUT_OPTION) $(C_SOURCE) $1
+
+# $(call LINK.cmd,<objectlist>)
+LINK.cmd = $(LD) $(extra_LDFLAGS) $(LDFLAGS) $(TARGET_ARCH) $1 $(LDLIBS) $(LINK_OUTPUT)
+
+# $(CHECK.cmd)
+CHECK.cmd = cd $(SRCDIR)/tests && ./run_make_tests -make $(shell cd $(<D) && pwd)/$(<F)
+
+# $(call MKDIR.cmd,<dirlist>)
+MKDIR.cmd = mkdir -p $1
+
+# $(call RM.cmd,<filelist>)
+RM.cmd = rm -f $1
+
+# $(call CP.cmd,<from>,<to>)
+CP.cmd = cp $1 $2
+
+CLEANSPACE = $(call RM.cmd,$(OBJECTS) $(PROG) $(BUILT_SOURCES))
+
+# Load overrides for the above variables.
+include $(firstword $(wildcard $(SRCDIR)/mk/$(lastword $(subst -, ,$(MAKE_HOST)).mk) $(OUTDIR)mk/Posix.mk $(SRCDIR)/mk/Posix.mk))
+
+VERSION = %VERSION%
+
+VPATH = $(SRCDIR)
+
+all: $(PROG)
+
+$(PROG): $(OBJECTS)
+	$(call LINK.cmd,$^)
+
+$(OBJECTS): $(OUTDIR)%.$(OBJEXT): %.c
+	$(call COMPILE.cmd,$<)
+
+$(OBJECTS): | $(OBJDIRS) $(BUILT_SOURCES)
+
+$(OBJDIRS):
+	$(call MKDIR.cmd,$@)
+
+check:
+	$(CHECK.cmd)
+
+clean:
+	$(CLEANSPACE)
+
+$(filter %.h,$(BUILT_SOURCES)): %.h : %.in.h
+	$(call RM.cmd,$@)
+	$(call CP.cmd,$<,$@)
+
+.PHONY: all check clean

COPYING

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+
+  A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+  The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form.  A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+  The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities.  However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work.  For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+  The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+  The Corresponding Source for a work in source code form is that
+same work.
+
+  2. Basic Permissions.
+
+  All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
+permission to run the unmodified Program.  The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work.  This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+  You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force.  You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright.  Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+  Conveying under any other circumstances is permitted solely under
+the conditions stated below.  Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+  No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+  When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+  4. Conveying Verbatim Copies.
+
+  You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+  You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+  5. Conveying Modified Source Versions.
+
+  You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under section
+    7.  This requirement modifies the requirement in section 4 to
+    "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy.  This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged.  This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
+    interfaces that do not display Appropriate Legal Notices, your
+    work need not make them do so.
+
+  A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit.  Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+  6. Conveying Non-Source Forms.
+
+  You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling.  In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage.  For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product.  A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+  "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source.  The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+  The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

Makefile.am

@@ -0,0 +1,186 @@
+# This is a -*-Makefile-*-, or close enough
+#
+# Copyright (C) 1997-2019 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+AUTOMAKE_OPTIONS = dist-bzip2 silent-rules std-options subdir-objects nostdinc
+ACLOCAL_AMFLAGS = -I m4
+
+MAKE_HOST =	@MAKE_HOST@
+
+SUBDIRS =	lib po doc
+
+bin_PROGRAMS =	make
+include_HEADERS = src/gnumake.h
+
+man_MANS =	doc/make.1
+
+make_SRCS =	src/ar.c src/arscan.c src/commands.c src/commands.h \
+		src/debug.h src/default.c src/dep.h src/dir.c src/expand.c \
+		src/file.c src/filedef.h src/function.c src/getopt.c \
+		src/getopt.h src/getopt1.c src/gettext.h src/guile.c \
+		src/hash.c src/hash.h src/implicit.c src/job.c src/job.h \
+		src/load.c src/loadapi.c src/main.c src/makeint.h src/misc.c \
+		src/os.h src/output.c src/output.h src/read.c src/remake.c \
+		src/rule.c src/rule.h src/signame.c src/strcache.c \
+		src/variable.c src/variable.h src/version.c src/vpath.c
+
+w32_SRCS =	src/w32/pathstuff.c src/w32/w32os.c src/w32/compat/dirent.c \
+		src/w32/compat/posixfcn.c src/w32/include/dirent.h \
+		src/w32/include/dlfcn.h src/w32/include/pathstuff.h \
+		src/w32/include/sub_proc.h src/w32/include/w32err.h \
+		src/w32/subproc/misc.c src/w32/subproc/proc.h \
+		src/w32/subproc/sub_proc.c src/w32/subproc/w32err.c
+
+vms_SRCS =	src/vms_exit.c src/vms_export_symbol.c src/vms_progname.c \
+		src/vmsdir.h src/vmsfunctions.c src/vmsify.c
+
+amiga_SRCS =	src/amiga.c src/amiga.h
+
+glob_SRCS =	lib/fnmatch.c lib/fnmatch.h lib/glob.c lib/glob.h
+
+alloca_SRCS =	lib/alloca.c
+
+loadavg_SRCS =	lib/getloadavg.c
+
+make_SOURCES =	$(make_SRCS)
+EXTRA_make_SOURCES = $(amiga_SRCS) $(vms_SRCS)
+
+make_LDADD =	$(LIBOBJS) $(GUILE_LIBS) lib/libgnu.a $(GETLOADAVG_LIBS) \
+		@LIBINTL@
+
+localedir =	$(datadir)/locale
+
+AM_CPPFLAGS =	-Isrc -I$(top_srcdir)/src -Ilib -I$(top_srcdir)/lib \
+		-DLIBDIR=\"$(libdir)\" -DINCLUDEDIR=\"$(includedir)\" \
+		-DLOCALEDIR=\"$(localedir)\"
+
+AM_CFLAGS =	$(GUILE_CFLAGS)
+
+if WINDOWSENV
+  make_SOURCES += $(w32_SRCS)
+  AM_CPPFLAGS  += -I $(top_srcdir)/src/w32/include
+else
+  make_SOURCES += src/posixos.c
+endif
+
+if USE_CUSTOMS
+  make_SOURCES += src/remote-cstms.c
+else
+  make_SOURCES += src/remote-stub.c
+endif
+
+# Extra stuff to include in the distribution.
+
+mk_FILES =	Basic.mk mk/msdosdjgpp.mk mk/Amiga.mk mk/VMS.mk mk/Windows32.mk
+# We don't need this, since the standard automake output will do.
+#mk/Posix.mk.in
+
+m4_FILES =	m4/gnulib-cache.m4
+
+test_FILES =	tests/run_make_tests tests/run_make_tests.bat \
+		tests/run_make_tests.pl tests/test_driver.pl \
+		tests/config-flags.pm.in tests/config_flags_pm.com \
+		tests/mkshadow tests/jhelp.pl tests/guile.supp tests/README
+# test/scripts are added via dist-hook below.
+
+EXTRA_DIST =	ChangeLog README build.sh.in $(man_MANS) \
+		README.customs README.OS2 \
+		README.Amiga SCOPTIONS src/config.ami \
+		README.DOS builddos.bat src/configh.dos \
+		README.W32 build_w32.bat src/config.h.W32 \
+		README.VMS makefile.com src/config.h-vms src/vmsjobs.c \
+		vms_export_symbol_test.com \
+		src/gmk-default.scm src/gmk-default.h \
+		$(mk_FILES) $(m4_FILES) $(test_FILES)
+
+
+# This is built during configure, but behind configure's back
+
+DISTCLEANFILES = build.sh
+
+# --------------- Generate the Guile default module content
+
+src/guile.$(OBJEXT): src/gmk-default.h
+src/gmk-default.h: $(top_srcdir)/src/gmk-default.scm
+	(echo 'static const char *const GUILE_module_defn = " '\\ \
+	  && sed -e 's/;.*//' -e '/^[ \t]*$$/d' -e 's/"/\\"/g' -e 's/$$/ \\/' \
+		 $(top_srcdir)/src/gmk-default.scm \
+	  && echo '";') > src/gmk-default.h
+
+# --------------- Local DIST Section
+
+# Install the mk and tests subdirectories
+#
+dist-hook:
+	(cd $(top_srcdir); \
+	 sub=`find tests/scripts -follow \( -name .git -o -name .deps -o -name work -o -name .gitignore -o -name \*.orig -o -name \*.rej -o -name \*~ -o -name \*.out -o -name Makefile \) -prune -o -type f -print`; \
+	 tar chf - $$sub) \
+	| (cd $(distdir); tar xfBp -)
+
+
+# --------------- Local CHECK Section
+
+check-local: check-regression
+	@banner=" Regression PASSED: GNU Make $(VERSION) ($(MAKE_HOST)) built with $(CC) "; \
+	dashes=`echo "$$banner" | sed s/./=/g`; \
+	echo; \
+	echo "$$dashes"; \
+	echo "$$banner"; \
+	echo "$$dashes"; \
+	echo
+
+# > check-regression
+#
+# Look for the make test suite, and run it if found and we can find perl.
+# If we're building outside the tree, we use symlinks to make a local copy of
+# the test suite.  Unfortunately the test suite itself isn't localizable yet.
+#
+MAKETESTFLAGS =
+
+.PHONY: check-regression
+
+check-regression: tests/config-flags.pm
+	@if test -f '$(top_srcdir)/tests/run_make_tests'; then \
+	  ulimit -n 128; \
+	  if $(PERL) -v >/dev/null 2>&1; then \
+	    case `cd '$(top_srcdir)'; pwd` in `pwd`) : ;; \
+	      *) test -d tests || mkdir tests; \
+		 rm -f srctests; \
+		 if ln -s '$(top_srcdir)/tests' srctests; then \
+		   for f in run_make_tests run_make_tests.pl test_driver.pl scripts jhelp.pl; do \
+		     rm -f tests/$$f; ln -s ../srctests/$$f tests; \
+		   done; fi ;; \
+	    esac; \
+	    echo "cd tests && $(PERL) ./run_make_tests.pl -srcdir $(abs_top_srcdir) -make ../make$(EXEEXT) $(MAKETESTFLAGS)"; \
+	    cd tests && $(PERL) ./run_make_tests.pl -srcdir '$(abs_top_srcdir)' -make '../make$(EXEEXT)' $(MAKETESTFLAGS); \
+	  else \
+	    echo "Can't find a working Perl ($(PERL)); the test suite requires Perl."; \
+	  fi; \
+	else \
+	  echo "Can't find the GNU Make test suite ($(top_srcdir)/tests)."; \
+	fi
+
+
+# --------------- Maintainer's Section
+
+# Tell automake that I haven't forgotten about this file and it will be
+# created before we build a distribution (see maintMakefile in the Git
+# distribution).
+
+README:
+
+@MAINT_MAKEFILE@

README.Amiga

@@ -0,0 +1,80 @@
+Short: Port of GNU make with SAS/C (no ixemul.library required)
+Author: GNU, Amiga port by Aaron "Optimizer" Digulla
+Uploader: Aaron "Optimizer" Digulla (digulla@fh-konstanz.de)
+Type: dev/c
+
+This is a pure Amiga port of GNU make. It needs no extra libraries or
+anything. It has the following features (in addition to any features of
+GNU make):
+
+- Runs Amiga-Commands with SystemTags() (Execute)
+- Can run multi-line statements
+- Allows to use Device-Names in targets:
+
+        c:make : make.o
+
+    is ok. To distinguish between device-names and target : or ::, MAKE
+    looks for spaces. If there are any around :, it's taken as a target
+    delimiter, if there are none, it's taken as the name of a device. Note
+    that "make:make.o" tries to create "make.o" on the device "make:".
+- Replaces @@ by a newline in any command line:
+
+        if exists make @@\
+            delete make.bak quiet @@\
+            rename make make.bak @@\
+        endif @@\
+        $(CC) Link Make.o To make
+
+    works. Note that the @@ must stand alone (i.e., "make@@\" is illegal).
+    Also be careful that there is a space after the "\" (i.e., at the
+    beginning of the next line).
+- Can be made resident to save space and time
+- Amiga specific wildcards can be used in $(wildcard ...)
+
+BUGS:
+- The line
+
+    dummy.h : src/*.c
+
+tries to make dummy.h from "src/*.c" (i.e., no wildcard-expansion takes
+place). You have to use "$(wildcard src/*.c)" instead.
+
+COMPILING FROM SCRATCH
+----------------------
+
+To recompile, you need SAS/C 6.51.
+
+As of GNU make 4.3, the build environment has been cleaned up and alternate
+make files (including smakefiles) have been removed.  If you have an existing
+version of GNU make available you _should_ be able to run:
+
+   make -f Basic.mk
+
+However this is untested.
+
+If you have an Amiga system and would like to collaborate on getting
+bootstrapping to work properly please contact bug-make@gnu.org.
+
+INSTALLATION
+
+Copy make somewhere in your search path (e.g., sc:c or sc:bin).
+If you plan to use recursive makes, install make resident:
+
+    Resident make Add
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 1995-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.

README.DOS.template

@@ -0,0 +1,296 @@
+Port of GNU Make to 32-bit protected mode on MSDOS and MS-Windows.
+
+Builds with DJGPP v2 port of GNU C/C++ compiler and utilities.
+
+
+New (since 3.74) DOS-specific features:
+
+   1. Supports long filenames when run from DOS box on Windows 9x.
+
+   2. Supports both stock DOS COMMAND.COM and Unix-style shells
+      (details in 'Notes' below).
+
+   3. Supports DOS drive letters in dependencies and pattern rules.
+
+   4. Better support for DOS-style backslashes in pathnames (but see
+      'Notes' below).
+
+   5. The $(shell) built-in can run arbitrary complex commands,
+      including pipes and redirection, even when COMMAND.COM is your
+      shell.
+
+   6. Can be built without floating-point code (see below).
+
+   7. Supports signals in child programs and restores the original
+      directory if the child was interrupted.
+
+   8. Can be built without (a previous version of) Make.
+
+   9. The build process requires only standard tools.  (Optional
+      targets like "check:" still need additional programs, though,
+      see below.)
+
+  10. Beginning with v3.78, the test suite works in the DJGPP
+      environment (requires Perl and auxiliary tools; see below).
+
+
+To install a binary distribution:
+
+   Simply unzip the makNNNb.zip file (where NNN is the version number)
+   preserving the directory structure (-d switch if you use PKUNZIP).
+   If you are installing Make on Windows 9X or Windows 2000, use an
+   unzip program that supports long filenames in zip files.  After
+   unzipping, make sure the directory with make.exe is on your PATH,
+   and that's all you need to use Make.
+
+
+To build from sources:
+
+   1. Unzip the archive, preserving the directory structure (-d switch
+      if you use PKUNZIP).  If you build Make on Windows 9X or Windows
+      2000, use an unzip program that supports long filenames in zip
+      files.
+
+      If you are unpacking an official GNU source distribution, use
+      either DJTAR (which is part of the DJGPP development
+      environment), or the DJGPP port of GNU Tar.
+
+   2. If you have a working Make already, you can run:
+
+          make -f Basic.mk
+
+   3. If you don't have a working Make already you can bootstrap one
+      by running:
+
+          .\builddos.bat
+
+   4. If you are building from outside of the source directory, you
+      need to tell Make where the sources are, like this:
+
+          make -f c:/djgpp/gnu/make/Basic.mk SRCDIR=c:/djgpp/gnu/make
+
+      or:
+
+          c:/djgpp/gnu/make/builddos.bat c:/djgpp/gnu/make
+
+   5. To run the test suite, type "make check".  This requires a Unix
+      shell (I used the DJGPP port of Bash 2.03), Perl, Sed, Fileutils
+      and Sh-utils.
+
+   6. To install copy make.exe to the preferred location.
+
+      Since GNU make 4.3, support for customized platform installations
+      has been removed.  If you'd like to collaborate on reinstating
+      these capabilities, contact bug-make@gnu.org.
+
+
+Notes:
+-----
+
+   1. The shell issue.
+
+      This is probably the most significant improvement, first
+      introduced in the port of GNU Make 3.75.
+
+      The original behavior of GNU Make is to invoke commands
+      directly, as long as they don't include characters special to
+      the shell or internal shell commands, because that is faster.
+      When shell features like redirection or filename wildcards are
+      involved, Make calls the shell.
+
+      This port supports both DOS shells (the stock COMMAND.COM and its
+      4DOS/NDOS replacements), and Unix-style shells (tested with the
+      venerable Stewartson's 'ms_sh' 2.3 and the DJGPP port of 'bash' by
+      Daisuke Aoyama <jack@st.rim.or.jp>).
+
+      When the $SHELL variable points to a Unix-style shell, Make
+      works just like you'd expect on Unix, calling the shell for any
+      command that involves characters special to the shell or
+      internal shell commands.  The only difference is that, since
+      there is no standard way to pass command lines longer than the
+      infamous DOS 126-character limit, this port of Make writes the
+      command line to a temporary disk file and then invokes the shell
+      on that file.
+
+      If $SHELL points to a DOS-style shell, however, Make will not
+      call it automatically, as it does with Unix shells.  Stock
+      COMMAND.COM is too dumb and would unnecessarily limit the
+      functionality of Make.  For example, you would not be able to
+      use long command lines in commands that use redirection or
+      pipes.  Therefore, when presented with a DOS shell, this port of
+      Make will emulate most of the shell functionality, like
+      redirection and pipes, and shall only call the shell when a
+      batch file or a command internal to the shell is invoked.  (Even
+      when a command is an internal shell command, Make will first
+      search the $PATH for it, so that if a Makefile calls 'mkdir',
+      you can install, say, a port of GNU 'mkdir' and have it called
+      in that case.)
+
+      The key to all this is the extended functionality of 'spawn' and
+      'system' functions from the DJGPP library; this port just calls
+      'system' where it would invoke the shell on Unix.  The most
+      important aspect of these functions is that they use a special
+      mechanism to pass long (up to 16KB) command lines to DJGPP
+      programs.  In addition, 'system' emulates some internal
+      commands, like 'cd' (so that you can now use forward slashes
+      with it, and can also change the drive if the directory is on
+      another drive).  Another aspect worth mentioning is that you can
+      call Unix shell scripts directly, provided that the shell whose
+      name is mentioned on the first line of the script is installed
+      anywhere along the $PATH.  It is impossible to tell here
+      everything about these functions; refer to the DJGPP library
+      reference for more details.
+
+      The $(shell) built-in is implemented in this port by calling
+      'popen'.  Since 'popen' calls 'system', the above considerations
+      are valid for $(shell) as well.  In particular, you can put
+      arbitrary complex commands, including pipes and redirection,
+      inside $(shell), which is in many cases a valid substitute for
+      the Unix-style command substitution (`command`) feature.
+
+
+   2. "SHELL=/bin/sh" -- or is it?
+
+      Many Unix Makefiles include a line which sets the SHELL, for
+      those versions of Make which don't have this as the default.
+      Since many DOS systems don't have 'sh' installed (in fact, most
+      of them don't even have a '/bin' directory), this port takes
+      such directives with a grain of salt.  It will only honor such a
+      directive if the basename of the shell name (like 'sh' in the
+      above example) can indeed be found in the directory that is
+      mentioned in the SHELL= line ('/bin' in the above example), or
+      in the current working directory, or anywhere on the $PATH (in
+      that order).  If the basename doesn't include a filename
+      extension, Make will look for any known extension that indicates
+      an executable file (.exe, .com, .bat, .btm, .sh, and even .sed
+      and .pl).  If any such file is found, then $SHELL will be
+      defined to the exact pathname of that file, and that shell will
+      hence be used for the rest of processing.  But if the named
+      shell is *not* found, the line which sets it will be effectively
+      ignored, leaving the value of $SHELL as it was before.  Since a
+      lot of decisions that this port makes depend on the gender of
+      the shell, I feel it doesn't make any sense to tailor Make's
+      behavior to a shell which is nowhere to be found.
+
+      Note that the above special handling of "SHELL=" only happens
+      for Makefiles; if you set $SHELL in the environment or on the
+      Make command line, you are expected to give the complete
+      pathname of the shell, including the filename extension.
+
+      The default value of $SHELL is computed as on Unix (see the Make
+      manual for details), except that if $SHELL is not defined in the
+      environment, $COMSPEC is used.  Also, if an environment variable
+      named $MAKESHELL is defined, it takes precedence over both
+      $COMSPEC and $SHELL.  Note that, unlike Unix, $SHELL in the
+      environment *is* used to set the shell (since on MSDOS, it's
+      unlikely that the interactive shell will not be suitable for
+      Makefile processing).
+
+      The bottom line is that you can now write Makefiles where some
+      of the targets require a real (i.e. Unix-like) shell, which will
+      nevertheless work when such shell is not available (provided, of
+      course, that the commands which should always work, don't
+      require such a shell).  More important, you can convert Unix
+      Makefiles to MSDOS and leave the line which sets the shell
+      intact, so that people who do have Unixy shell could use it for
+      targets which aren't converted to DOS (like 'install' and
+      'uninstall', for example).
+
+
+   3. Default directories.
+
+      GNU Make knows about standard directories where it searches for
+      library and include files mentioned in the Makefile.  Since
+      MSDOS machines don't have standard places for these, this port
+      will search ${DJDIR}/lib and ${DJDIR}/include respectively.
+      $DJDIR is defined automatically by the DJGPP startup code as the
+      root of the DJGPP installation tree (unless you've tampered with
+      the DJGPP.ENV file).  This should provide reasonable default
+      values, unless you moved parts of DJGPP to other directories.
+
+
+   4. Letter-case in filenames.
+
+      If you run Make on Windows 9x, you should be aware of the
+      letter-case issue.  Make is internally case-sensitive, but all
+      file operations are case-insensitive on Windows 9x, so
+      e.g. files 'FAQ', 'faq' and 'Faq' all refer to the same file, as
+      far as Windows is concerned.  The underlying DJGPP C library
+      functions honor the letter-case of the filenames they get from
+      the OS, except that by default, they down-case 8+3 DOS filenames
+      which are stored in upper case in the directory and would break
+      many Makefiles otherwise.  (The details of which filenames are
+      converted to lower case are explained in the DJGPP libc docs,
+      under the '_preserve_fncase' and '_lfn_gen_short_fname'
+      functions, but as a thumb rule, any filename that is stored in
+      upper case in the directory, is a valid DOS 8+3 filename and
+      doesn't include characters invalid on MSDOS FAT filesystems,
+      will be automatically down-cased.)  User reports that I have
+      indicate that this default behavior is generally what you'd
+      expect; however, your input is most welcome.
+
+      In any case, if you hit a situation where you must force Make to
+      get the 8+3 DOS filenames in upper case, set FNCASE=y in the
+      environment or in the Makefile.
+
+
+   5. DOS-style pathnames.
+
+      There are a lot of places throughout the program sources which
+      make implicit assumptions about the pathname syntax.  In
+      particular, the directories are assumed to be separated by '/',
+      and any pathname which doesn't begin with a '/' is assumed to be
+      relative to the current directory.  This port attempts to
+      support DOS-style pathnames which might include the drive letter
+      and use backslashes instead of forward slashes.  However, this
+      support is not complete; I feel that pursuing this support too
+      far might break some more important features, particularly if
+      you use a Unix-style shell (where a backslash is a quote
+      character).  I only consider support of backslashes desirable
+      because some Makefiles invoke non-DJGPP programs which don't
+      understand forward slashes.  A notable example of such programs
+      is the standard programs which come with MSDOS.  Otherwise, you
+      are advised to stay away from backslashes whenever possible.  In
+      particular, filename globbing won't work on pathnames with
+      backslashes, because the GNU 'glob' library doesn't support them
+      (backslash is special in filename wildcards, and I didn't want
+      to break that).
+
+      One feature which *does* work with backslashes is the filename-
+      related built-in functions such as $(dir), $(notdir), etc.
+      Drive letters in pathnames are also fully supported.
+
+
+
+Bug reports:
+-----------
+
+   Bugs that are clearly related to the MSDOS/DJGPP port should be
+   reported first on the comp.os.msdos.djgpp news group (if you cannot
+   post to Usenet groups, write to the DJGPP mailing list,
+   <djgpp@delorie.com>, which is an email gateway into the above news
+   group).  For other bugs, please follow the procedure explained in
+   the "Bugs" chapter of the Info docs.  If you don't have an Info
+   reader, look up that chapter in the 'make.i1' file with any text
+   browser/editor.
+
+
+   Enjoy,
+                        Eli Zaretskii <eliz@is.elta.co.il>
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 1996-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.

README.OS2.template

@@ -0,0 +1,176 @@
+Port of GNU make to OS/2.
+
+Features of GNU make that do not work under OS/2:
+  - remote job execution
+  - dynamic load balancing
+
+
+Special features of the OS/2 version:
+
+Due to the fact that some people might want to use sh syntax in
+Makefiles while others might want to use OS/2's native shell cmd.exe,
+GNU make supports both shell types. The following list defines the order
+that is used to determine the shell:
+
+ 1. The shell specified by the environment variable MAKESHELL.
+ 2. The shell specified by the SHELL variable within a Makefile. Like
+    Unix, SHELL is NOT taken from the environment.
+ 3. The shell specified by the COMSPEC environment variable.
+ 4. The shell specified by the OS2_SHELL environment variable.
+ 5. If none of the above is defined /bin/sh is used as default.  This
+    happens e.g. in the make testsuite.
+
+Note: - Points 3 and 4 can be turned off at compile time by adding
+        -DNO_CMD_DEFAULT to the CPPFLAGS.
+      - DOS support is not tested for EMX and therefore might not work.
+      - The UNIXROOT environment variable is supported to find /bin/sh
+        if it is not on the current drive.
+
+
+COMPILATION OF GNU MAKE FOR OS/2:
+
+I. ***** SPECIAL OPTIONS *****
+
+ - At compile time you can turn off that cmd is used as default shell
+   (but only /bin/sh). Simply set CPPFLAGS="-DNO_CMD_DEFAULT" and make
+   will not use cmd unless you cause it to do so by setting MAKESHELL to
+   cmd or by specifying SHELL=cmd in your Makefile.
+
+ - At compile time you can set CPPFLAGS="-DNO_CHDIR2" to turn off that
+   GNU make prints drive letters. This is necessary if you want to run
+   the testsuite.
+
+
+II. ***** REQUIREMENTS FOR THE COMPILATION *****
+
+A standard Unix like build environment:
+
+ - sh compatible shell (ksh, bash, ash, but tested only with pdksh 5.2.14
+   release 2)
+   If you use pdksh it is recommended to update to 5.2.14 release 2. Older
+   versions may not work! You can get this version at
+   http://www.math.ohio-state.edu/~ilya/software/os2/pdksh-5.2.14-bin-2.zip
+ - GNU file utilities (make sure that install.exe from the file utilities
+   is in front of your PATH before X:\OS2\INSTALL\INSTALL.EXE. I recommend
+   also to change the filename to ginstall.exe instead of install.exe
+   to avoid confusion with X:\OS2\INSTALL\INSTALL.EXE)
+ - GNU shell utilities
+ - GNU text utilities
+ - gawk
+ - grep
+ - sed
+ - GNU make 3.79.1 (special OS/2 patched version) or higher
+ - perl 5.005 or higher
+ - GNU texinfo (you can use 3.1 (gnuinfo.zip), but I recommend 4.0)
+
+If you want to recreate the configuration files (developers only!)
+you need also: GNU m4 1.4, autoconf 2.59, automake 1.9.6 (or compatible)
+
+
+III. ***** COMPILATION AND INSTALLATION *****
+
+ a) ** Developers only - Everyone else should skip this section **
+    To recreate the configuration files use:
+
+      export EMXSHELL=ksh
+      aclocal -I config
+      automake
+      autoconf
+      autoheader
+
+
+b) Installation into x:/usr
+
+   Note: Although it is possible to compile make using "./configure",
+         "make", "make install" this is not recommended.  In particular,
+         you must ALWAYS use LDFLAGS="-Zstack 0x6000" because the default
+         stack size is far to small and make will not work properly!
+
+Recommended environment variables and installation options:
+
+    export ac_executable_extensions=".exe"
+    export CPPFLAGS="-D__ST_MT_ERRNO__"
+    export CFLAGS="-O2 -Zomf -Zmt"
+    export LDFLAGS="-Zcrtdll -Zlinker /exepack:2 -Zlinker /pm:vio -Zstack 0x6000"
+    export RANLIB="echo"
+    ./configure --prefix=x:/usr --infodir=x:/usr/share/info --mandir=x:/usr/share/man --without-included-gettext
+    make AR=emxomfar
+    make install
+
+Note: If you use gcc 2.9.x I recommend to set also LIBS="-lgcc"
+
+Note: You can add -DNO_CMD_DEFAULT and -DNO_CHDIR2 to CPPFLAGS.
+      See section I. for details.
+
+
+IV. ***** NLS support *****
+
+GNU make has NLS (National Language Support), with the following
+caveats:
+
+ a) It will only work with GNU gettext, and
+ b) GNU gettext support is not included in the GNU make package.
+
+Therefore, if you wish to enable the internationalization features of
+GNU make you must install GNU gettext on your system before configuring
+GNU make.
+
+You can choose the languages to be installed. To install support for
+English, German and French only enter:
+
+  export LINGUAS="en de fr"
+
+If you don't specify LINGUAS all languages are installed.
+
+If you don't want NLS support (English only) use the option
+--disable-nls for the configure script.  Note if GNU gettext is not
+installed then NLS will not be enabled regardless of this flag.
+
+
+V. ***** Running the make test suite *****
+
+To run the included make test suite you have to set
+
+  CPPFLAGS="-D__ST_MT_ERRNO__ -DNO_CMD_DEFAULT -DNO_CHDIR2"
+
+before you compile make. This is due to some restrictions of the
+testsuite itself. -DNO_CMD_DEFAULT causes make to use /bin/sh as default
+shell in every case. Normally you could simply set MAKESHELL="/bin/sh"
+to do this but the testsuite ignores the environment. -DNO_CHDIR2 causes
+make not to use drive letters for directory names (i.e. _chdir2() and
+_getcwd2() are NOT used).  The testsuite interpretes the whole output of
+make, especially statements like make[1]: Entering directory
+'C:/somewhere/make-3.79.1/tests' where the testsuite does not expect the
+drive letter. This would be interpreted as an error even if there is
+none.
+
+To run the testsuite do the following:
+
+  export CPPFLAGS="-D__ST_MT_ERRNO__ -DNO_CMD_DEFAULT -DNO_CHDIR2"
+  export CFLAGS="-Zomf -O2 -Zmt"
+  export LDFLAGS="-Zcrtdll -s -Zlinker /exepack:2 -Zlinker /pm:vio -Zstack 0x6000"
+  export RANLIB="echo"
+  ./configure --prefix=x:/usr --disable-nls
+  make AR=emxomfar
+  make check
+
+All tests should work fine with the exception of one of the "INCLUDE_DIRS"
+tests which will fail if your /usr/include directory is on a drive different
+from the make source tree.
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 2003-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.

README.VMS

@@ -0,0 +1,515 @@
+Overview:                                                       -*-text-mode-*-
+---------
+
+  This version of GNU make has been tested on:
+  OpenVMS V8.3/V8.4 (Alpha) and V8.4 (Integrity) AND V7.3 (VAX)
+
+  This version of GNU Make is intended to be run from DCL to run
+  make scripts with a special syntax that is described below.  It
+  likely will not be able to run unmodified Unix makefiles.
+
+  There is an older implementation of GNU Make that was ported to GNV.
+  Work is now in progress to merge that port to get a single version
+  of GNU Make available.  When that merge is done, GNU Make will auto
+  detect that it is running under a Posix shell and then operate as close to
+  GNU Make on Unix as possible.
+
+  The descriptions below are for running GNU make from DCL or equivalent.
+
+Recipe differences:
+-------------------
+
+  GNU Make for OpenVMS can not currently run native Unix make files because of
+  differences in the implementation.
+
+  I am trying to document the current behavior in this section.  This is based
+  on the information in the file NEWS. and running the test suite.
+  TODO: More tests are needed to validate and demonstrate the OpenVMS
+  expected behavior.
+
+  In some cases the older behavior of GNU Make when run from DCL is not
+  compatible with standard makefile behavior.
+
+  This behavior can be changed when running GNU Make from DCL by setting
+  either DCL symbols or logical names of the format GNV$.  The settings
+  are enabled with a string starting with one of '1', 'T', or 'E' for "1",
+  "TRUE", or "ENABLE".  They are disabled with a '0', 'F', or 'D' for "1",
+  "FALSE", or "DISABLE".  If they are not explicitly set to one of these
+  values, then they will be set to their default values.
+
+  The value of the setting DECC$FILENAME_UNIX_REPORT or
+  DECC$FILENAME_UNIX_ONLY will now cause the $(dir x) function to return
+  './' or '[]' as appropriate.
+
+  The name GNV$MAKE_OLD_VMS when enabled will cause GNU Make to behave as
+  much as the older method as can be done with out disabling VMS features.
+  When it is disabled GNU Make have the new behavior which more closely
+  matches Unix Make behavior.
+
+  The default is currently the old behavior when running GNU Make from DCL.
+  In the future this may change.  When running make from GNV Bash the new
+  behavior is the default.
+
+  This is a global setting that sets the default behavior for several other
+  options that can be individually changed.  Many of the individual settings
+  are to make it so that the self tests for GNU Make need less VMS specific
+  modifications.
+
+  The name GNV$MAKE_COMMA when enabled will cause GNU Make to expect a comma
+  for a path separator and use a comma for the separator for a list of files.
+  When disabled, it will cause GNU Make to use a colon for a path separator
+  and a space for the separator for a list of files.  The default is to be
+  enabled if the GNU Make is set to the older behavior.
+
+  The name GNV$MAKE_SHELL_SIM when enabled will cause GNU Make to try to
+  simulate a Posix shell more closely.  The following behaviors occur:
+
+    * Single quotes are converted to double quotes and any double
+      quotes inside of them are doubled.  No environment variable expansion
+      is simulated.
+    * A exit command status will be converted to a Posix Exit
+      where 0 is success and non-zero is failure.
+    * The $ character will cause environment variable expansion.
+    * Environent variables can be set on the command line before a command.
+
+  VMS generally uses logical name search lists instead of path variables
+  where the resolution is handled by VMS independent of the program.  Which
+  means that it is likely that nothing will notice if the default path
+  specifier is changed in the future.
+
+  Currently the built in VMS specific macros and recipes depend on the comma
+  being used as a file list separator.
+  TODO: Remove this dependency as other functions in GNU Make depend on a
+  space being used as a separator.
+
+  The format for recipes are a combination of Unix macros, a subset of
+  simulated UNIX commands, some shell emulation, and OpenVMS commands.
+  This makes the resulting makefiles unique to the OpenVMS port of GNU make.
+
+  If you are creating a OpenVMS specific makefile from scratch, you should also
+  look at MMK (Madgoat Make) available at https://github.com/endlesssoftware/mmk
+  MMK uses full OpenVMS syntax and a persistent subprocess is used for the
+  recipe lines, allowing multiple line rules.
+
+  The default makefile search order is "makefile.vms", "gnumakefile",
+  "makefile".  TODO: See if that lookup is case sensitive.
+
+  When Make is invoked from DCL, it will create a foreign command
+  using the name of executable image, with any facility prefix removed,
+  for the duration of the make program, so it can be used internally
+  to recursively run make().  The macro MAKE_COMMAND will be set to
+  this foreign command.
+
+  When make is launched from an exec*() command from a C program,
+  the foreign command is not created.  The macro MAKE_COMMAND will be
+  set to the actual command passed as argv[0] to the exec*() function.
+
+  If the DCL symbol or logical name GNV$MAKE_USE_MCR exists, then
+  the macro MAKE_COMMAND will be set to be an "MCR" command with the
+  absolute path used by DCL to launch make.  The foreign command
+  will not be created.
+
+  The macro MAKE is set to be the same value as the macro MAKE_COMMAND
+  on all platforms.
+
+  Each recipe command is normally run as a separate spawned processes,
+  except for the cases documented below where a temporary DCL command
+  file may be used.
+
+  BUG: Testing has shown that the commands in the temporary command files
+  are not always created properly.  This issue is still under investigation.
+
+  Any macros marked as exported are temporarily created as DCL symbols
+  for child images to use.  DCL symbol substitution is not done with these
+  commands.
+  Untested: Symbol substitution.
+
+  When a temporary DCL command file is used, DCL symbol substitution
+  will work.
+
+  For VMS 7.3-1 and earlier, command lines are limited to 255 characters
+  or 1024 characters in a command file.
+  For VMS 7.3-2 and later, command lines are limited to 4059 characters
+  or 8192 characters in a command file.
+
+  VMS limits each token of a command line to 256 characters, and limits
+  a command line to 127 tokens.
+
+  Command lines above the limit length are written to a command file
+  in sys$scratch:.
+
+  In order to handle Unix style extensions to VMS DCL, GNU Make has
+  parsed the recipe commands and them modified them as needed.  The
+  parser has been re-written to resolve numerous bugs in handling
+  valid VMS syntax and potential buffer overruns.
+
+  The new parser may need whitespace characters where DCL does not require
+  it, and also may require that quotes are matched were DCL forgives if
+  they are not.  There is a small chance that existing VMS specific makefiles
+  will be affected.
+
+  The '<', '>' was previously implemented using command files.  Now
+  GNU Make will check to see if the is already a VMS "PIPE" command and
+  if it is not, will convert the command to a VMS "PIPE" command.
+
+  The '>>' redirection has been implemented by using a temporary command file.
+  This will be described later.
+
+  The DCL symbol or logical name GNV$MAKE_USE_CMD_FILE when set to a
+  string starting with one of '1','T', or 'E' for "1", "TRUE", or "ENABLE",
+  then temporary DCL command files are always used for running commands.
+
+  Some recipe strings with embedded new lines will not be handled correctly
+  when a command file is used.
+
+  GNU Make generally does text comparisons for the targets and sources.  The
+  make program itself can handle either Unix or OpenVMS format filenames, but
+  normally does not do any conversions from one format to another.
+  TODO: The OpenVMS format syntax handling is incomplete.
+  TODO: ODS-5 EFS support is missing.
+  BUG: The internal routines to convert filenames to and from OpenVMS format
+  do not work correctly.
+
+  Note: In the examples below, line continuations such as a backslash may have
+  been added to make the examples easier to read in this format.
+  BUG: That feature does not completely work at this time.
+
+  Since the OpenVMS utilities generally expect OpenVMS format paths, you will
+  usually have to use OpenVMS format paths for rules and targets.
+  BUG: Relative OpenVMS paths may not work in targets, especially combined
+  with vpaths.  This is because GNU make will just concatenate the directories
+  as it does on Unix.
+
+  The variables $^ and $@ separate files with commas instead of spaces.
+  This is controlled by the name GNV$MAKE_COMMA as documented in the
+  previous section.
+
+  While this may seem the natural thing to do with OpenVMS, it actually
+  causes problems when trying to use other make functions that expect the
+  files to be separated by spaces.  If you run into this, you need the
+  following workaround to convert the output.
+  TODO: Look at have the $^ and $@ use spaces like on Unix and have
+  and easy to use function to do the conversions and have the built
+  in OpenVMS specific recipes and macros use it.
+
+  Example:
+
+comma := ,
+empty :=
+space := $(empty) $(empty)
+
+foo: $(addsuffix .3,$(subs $(comma),$(space),$^)
+
+
+  Makefile variables are looked up in the current environment. You can set
+  symbols or logicals in DCL and evaluate them in the Makefile via
+  $(<name-of-symbol-or-logical>).  Variables defined in the Makefile
+  override OpenVMS symbols/logicals.
+
+  OpenVMS logical and symbols names show up as "environment" using the
+  origin function.  when the "-e" option is specified, the origion function
+  shows them as "environment override".  On Posix the test scripts indicate
+  that they should show up just as "environment".
+
+  When GNU make reads in a symbol or logical name into the environment, it
+  converts any dollar signs found to double dollar signs for convenience in
+  using DCL symbols and logical names in recipes.  When GNU make exports a
+  DCL symbol for a child process, if the first dollar sign found is followed
+  by second dollar sign, then all double dollar signs will be convirted to
+  single dollar signs.
+
+  The variable $(ARCH) is predefined as IA64, ALPHA or VAX respectively.
+  Makefiles for different OpenVMS systems can now be written by checking
+  $(ARCH).  Since IA64 and ALPHA are similar, usually just a check for
+  VAX or not VAX is sufficient.
+
+  You may have to update makefiles that assume VAX if not ALPHA.
+
+ifeq ($(ARCH),VAX)
+  $(ECHO) "On the VAX"
+else
+  $(ECHO) "On the ALPHA  or IA64"
+endif
+
+  Empty commands are handled correctly and don't end in a new DCL process.
+
+  The exit command needs to have OpenVMS exit codes.  To pass a Posix code
+  back to the make script, you need to encode it by multiplying it by 8
+  and then adding %x1035a002 for a failure code and %x1035a001 for a
+  success.  Make will interpret any posix code other than 0 as a failure.
+  TODO: Add an option have simulate Posix exit commands in recipes.
+
+  Lexical functions can be used in pipes to simulate shell file test rules.
+
+  Example:
+
+  Posix:
+b : c ; [ -f $@ ] || echo >> $@
+
+  OpenVMS:
+b : c ; if f$$search("$@") then pipe open/append xx $@ ; write xx "" ; close xx
+
+
+  You can also use pipes and turning messages off to silently test for a
+  failure.
+
+x = %x1035a00a
+
+%.b : %.c
+<tab>pipe set mess/nofac/noiden/nosev/notext ; type $^/output=$@ || exit $(x)
+
+
+Runtime issues:
+
+  The OpenVMS C Runtime has a convention for encoding a Posix exit status into
+  to OpenVMS exit codes.  These status codes will have the hex value of
+  0x35a000.  OpenVMS exit code may also have a hex value of %x10000000 set on
+  them.  This is a flag to tell DCL not to write out the exit code.
+
+  To convert an OpenVMS encoded Posix exit status code to the original code
+  You subtract %x35a000 and any flags from the OpenVMS code and divide it by 8.
+
+  WARNING: Backward-incompatibility!
+  The make program exit now returns the same encoded Posix exit code as on
+  Unix. Previous versions returned the OpenVMS exit status code if that is what
+  caused the recipe to fail.
+  TODO: Provide a way for scripts calling make to obtain that OpenVMS status
+  code.
+
+  Make internally has two error codes, MAKE_FAILURE and MAKE_TROUBLE.  These
+  will have the error "-E-" severity set on exit.
+
+  MAKE_TROUBLE is returned only if the option "-q" or "--question" is used and
+  has a Posix value of 1 and an OpenVMS status of %x1035a00a.
+
+  MAKE_FAILURE has a Posix value of 2 and an OpenVMS status of %x1035a012.
+
+  Output from GNU make may have single quotes around some values where on
+  other platforms it does not.  Also output that would be in double quotes
+  on some platforms may show up as single quotes on VMS.
+
+  There may be extra blank lines in the output on VMS.
+  https://savannah.gnu.org/bugs/?func=detailitem&item_id=41760
+
+  There may be a "Waiting for unfinished jobs..." show up in the output.
+
+  Error messages generated by Make or Unix utilities may slightly vary from
+  Posix platforms.  Typically the case may be different.
+
+  When make deletes files, on posix platforms it writes out 'rm' and the list
+  of files.  On VMS, only the files are writen out, one per line.
+  TODO: VMS
+
+  There may be extra leading white space or additional or missing whitespace
+  in the output of recipes.
+
+  GNU Make uses sys$scratch: for the tempfiles that it creates.
+
+  The OpenVMS CRTL library maps /tmp to sys$scratch if the TMP: logical name
+  does not exist.  As the CRTL may use both sys$scratch: and /tmp internally,
+  if you define the TMP logical name to be different than SYS$SCRATCH:,
+  you may end up with only some temporary files in TMP: and some in SYS$SCRATCH:
+
+  The default include directory for including other makefiles is
+  SYS$SYSROOT:[SYSLIB] (I don't remember why I didn't just use
+  SYS$LIBRARY: instead; maybe it wouldn't work that way).
+  TODO:  A better default may be desired.
+
+  If the device for a file in a recipe does not exist, on OpenVMS an error
+  message of "stat: <file>: no such device or address" will be output.
+
+  Make ignores success, informational, or warning errors (-S-, -I-, or
+  -W-).  But it will stop on -E- and -F- errors. (unless you do something
+  to override this in your makefile, or whatever).
+
+
+Unix compatibilty features:
+---------------------------
+
+  If the command 'echo' is seen, any single quotes on the line will be
+  converted to double quotes.
+
+  The variable $(CD) is implemented as a built in Change Directory
+  command. This invokes the 'builtin_cd'  Executing a 'set default'
+  recipe doesn't do the trick, since it only affects the subprocess
+  spawned for that command.
+
+  The 'builtin_cd' is generally expected to be on its own line.
+  The 'builtin_cd' either from the expansion of $(CD) or directly
+  put in a recipe line will be executed before any other commands in
+  that recipe line.  DCL parameter substitution will not work for the
+  'builtin_cd' command.
+
+  Putting a 'builtin_cd' in a pipeline or an IF-THEN line should not be
+  done because the 'builtin_cd' is always executed
+  and executed first.  The directory change is persistent.
+
+  Unix shell style I/O redirection is supported. You can now write lines like:
+  "<tab>mcr sys$disk:[]program.exe < input.txt > output.txt &> error.txt"
+
+  Posix shells have ":" as a null command.  These are now handled.
+  https://savannah.gnu.org/bugs/index.php?41761
+
+  A note on appending the redirected output.  A simple mechanism is
+  implemented to make ">>" work in action lines. In OpenVMS there is no simple
+  feature like ">>" to have DCL command or program output redirected and
+  appended to a file. GNU make for OpenVMS implements the redirection
+  of ">>" by using a command procedure.
+
+  The current algorithm creates the output file if it does not exist and
+  then uses the DCL open/append to extend it.  SYS$OUTPUT is then directed
+  to that file.
+
+  The implementation supports only one redirected append output to a file
+  and that redirection is done before any other commands in that line
+  are executed, so it redirects all output for that command.
+
+  The older implementation wrote the output to a temporary file in
+  in sys$scratch: and then attempted to append the file to the existing file.
+  The temporary file names looked like "CMDxxxxx.". Any time the created
+  command procedure can not complete, this happens. Pressing Ctrl+Y to
+  abort make is one case.
+
+  In case of Ctrl+Y the associated command procedure is left in SYS$SCRATCH:.
+  The command procedures will be named gnv$make_cmd*.com.
+
+  The CtrlY handler now uses $delprc to delete all children. This way also
+  actions with DCL commands will be stopped. As before the CtrlY handler
+  then sends SIGQUIT to itself, which is handled in common code.
+
+  Temporary command files are now deleted in the OpenVMS child termination
+  handler. That deletes them even if a Ctrl+C was pressed.
+  TODO: Does the previous section about >> leaving files still apply?
+
+  The behavior of pressing Ctrl+C is not changed. It still has only an effect,
+  after the current action is terminated. If that doesn't happen or takes too
+  long, Ctrl+Y should be used instead.
+
+
+Build Options:
+
+  Added support to have case sensitive targets and dependencies but to
+  still use case blind file names. This is especially useful for Java
+  makefiles on VMS:
+
+<TAB>.SUFFIXES :
+<TAB>.SUFFIXES : .class .java
+<TAB>.java.class :
+<TAB><TAB>javac "$<"
+<TAB>HelloWorld.class :      HelloWorld.java
+
+  A new macro WANT_CASE_SENSITIVE_TARGETS in config.h-vms was introduced.
+  It needs to be enabled to get this feature; default is disabled.
+  TODO: This should be a run-time setting based on if the process
+  has been set to case sensitive.
+
+
+Unimplemented functionality:
+
+  The new feature "Loadable objects" is not yet supported. If you need it,
+  please send a change request or submit a bug report.
+
+  The new option --output-sync (-O) is accepted but has no effect: GNU make
+  for OpenVMS does not support running multiple commands simultaneously.
+
+
+Self test failures and todos:
+-----------------------------
+
+  The test harness can not handle testing some of the VMS specific modes
+  because of the features needed for to be set for the Perl to run.
+  Need to find a way to set the VMS features before running make as a
+  child.
+
+  GNU make was not currently translating the OpenVMS encoded POSIX values
+  returned to it back to the Posix values.  I have temporarily modified the
+  Perl test script to compensate for it.  This should be being handled
+  internally to Make.
+  TODO: Verify and update the Perl test script.
+
+  The features/parallelism test was failing. OpenVMS is executing the rules
+  in sequence not in parallel as this feature was not implemented.
+  GNU Make on VMS no longer claims it is implemented.
+  TODO: Implement it.
+
+  Symlink support is not present.  Symlinks are supported by OpenVMS 8.3 and
+  later.
+
+  Error messages should be supressed with the "-" at the beginning of a line.
+  On openVMS they were showing up.  TODO: Is this still an issue?
+
+  The internal vmsify and unixify OpenVMS to/from UNIX are not handling logical
+  names correctly.
+
+
+Build instructions:
+------------------
+
+  Don't use the HP C V7.2-001 compiler, which has an incompatible change
+  how __STDC__ is defined. This results at least in compile time warnings.
+
+Make a 1st version
+       $ @makefile.com  ! ignore any compiler and/or linker warning
+       $ copy make.exe 1st-make.exe
+
+  Use the 1st version to generate a 2nd version as a test.
+       $ mc sys$disk:[]1st-make clean  ! ignore any file not found messages
+       $ mc sys$disk:[]1st-make
+
+  Verify your 2nd version by building Make again.
+       $ copy make.exe 2nd-make.exe
+       $ mc sys$disk:[]2nd-make clean
+       $ mc sys$disk:[]2nd-make
+
+
+Running the tests:
+------------------
+
+  Running the tests on OpenVMS requires the following software to be installed
+  as most of the tests are Unix oriented.
+
+  * Perl 5.18 or later.
+    https://sourceforge.net/projects/vmsperlkit/files/
+  * GNV 2.1.3 + Updates including a minimum of:
+    * Bash 4.3.30
+    * ld_tools 3.0.2
+    * coreutils 8.21
+   https://sourceforge.net/p/gnv/wiki/InstallingGNVPackages/
+   https://sourceforge.net/projects/gnv/files/
+
+   As the test scripts need to create some foreign commands that persist
+   after the test is run, it is recommend that either you use a subprocess or
+   a dedicated login to run the tests.
+
+   To get detailed information for running the tests:
+
+   $ set default [.tests]
+   $ @run_make_tests help
+
+   Running the script with no parameters will run all the tests.
+
+   After the the test script has been run once in a session, assuming
+   that you built make in sys$disk:[make], you can redefined the
+   "bin" logical name as follows:
+
+   $ define bin sys$disk:[make],gnv$gnu:[bin]
+
+   Then you can use Perl to run the scripts.
+
+   $ perl run_make_tests.pl
+
+
+Acknowlegements:
+----------------
+
+See NEWS. for details of past changes.
+
+  These are the currently known contributers to this port.
+
+  Hartmut Becker
+  John Malmberg
+  Michael Gehre
+  John Eisenbraun
+  Klaus Kaempf
+  Mike Moretti
+  John W. Eaton

README.W32.template

@@ -0,0 +1,361 @@
+This version of GNU make has been tested on:
+  Microsoft Windows 2000/XP/2003/Vista/7/8/10
+It has also been used on Windows 95/98/NT, and on OS/2.
+
+It builds with the MinGW port of GCC (tested with GCC 3.4.2, 4.8.1,
+and 4.9.3).
+
+It also builds with MSVC 2.x, 4.x, 5.x, 6.x, 2005, 2008, 2010, 2012,
+2013, and 2015 as well as with .NET 7.x and .NET 2003.
+
+Building with Guile is supported (tested with Guile 2.0.x).  To build
+with Guile, you will need, in addition to Guile itself, its dependency
+libraries and the pkg-config program.  The latter is used to figure out
+which compilation and link switches and libraries need to be mentioned
+on the compiler command lines to correctly link with Guile.  A Windows
+port of pkg-config can be found on ezwinports site:
+
+  http://sourceforge.net/projects/ezwinports/
+
+The libraries on which Guile depends can vary depending on your
+version and build of Guile.  At the very least, the Boehm's GC library
+will be needed, and typically also GNU MP, libffi, libunistring, and
+libtool's libltdl.  Whoever built the port of Guile you have should
+also provide you with these dependencies or a URL where to download
+them.  A precompiled 32-bit Windows build of Guile is available from
+the ezwinports site mentioned above.
+
+The Windows port of GNU make is maintained jointly by various people.
+It was originally made by Rob Tulloh.
+It is currently maintained by Eli Zaretskii.
+
+
+Do this first, regardless of the build method you choose:
+---------------------------------------------------------
+
+ 1. Edit config.h.W32 to your liking (especially the few shell-related
+    defines near the end, or HAVE_CASE_INSENSITIVE_FS which corresponds
+    to './configure --enable-case-insensitive-file-system').  (We don't
+    recommend to define HAVE_CASE_INSENSITIVE_FS, but you may wish to
+    consider that if you have a lot of files whose names are in upper
+    case, while Makefile rules are written for lower-case versions.)
+
+
+Building with (MinGW-)GCC using build_w32.bat
+---------------------------------------------
+
+ 2. Open a W32 command prompt for your installed (MinGW-)GCC, setup a
+    correct PATH and other environment variables for it, then execute ...
+
+        .\build_w32.bat gcc
+
+    This produces gnumake.exe in the GccRel directory.
+
+    If you want a version of GNU make built with debugging enabled,
+    add the --debug option.  Output goes into the GccDebug directory.
+
+    The batch file will probe for Guile installation, and will build
+    gnumake.exe with Guile if it finds it.  If you have Guile
+    installed, but want to build Make without Guile support, type
+
+        .\build_w32.bat --without-guile gcc
+
+
+Building with (MSVC++-)cl using build_w32.bat
+---------------------------------------------
+
+ 2. Open a command shell, then execute ...
+
+        .\build_w32.bat
+
+    This produces a 64bit Release build of gnumake.exe in .\WinRel, using
+    the compiler found on the %Path%.  If no compiler is found, the batch
+    file will probe your system and choose the newest MSVC version it can
+    find.
+
+    If you want a 32bit version of GNU make, add the --x86 option.
+
+    If you want a Debug build of GNU make, add the --debug option.  Output
+    will go into the .\WinDebug directory.
+
+    The batch file will probe for Guile installation, and will build
+    gnumake.exe with Guile if it finds it.  If Guile is installed,
+    but you prefer to build GNU make without Guile support, add the
+    --without-guile option.
+
+
+Building with (MinGW-)GCC using GNU make
+----------------------------------------
+
+ 2. If you already have a version of GNU make available you can use it
+    to build this version.  Open a W32 command prompt for your installed
+    (MinGW-)GCC, setup a correct PATH and other environment variables
+    for it, then execute ...
+
+        make -f Basic.mk TOOLCHAIN=gcc
+
+    This produces GccRel\gnumake.exe.
+    If you want a version of GNU make built with debugging enabled,
+    add the TARGET_TYPE=debug option:
+
+        make -f Basic.mk TOOLCHAIN=gcc TARGET_TYPE=debug
+
+    The makefile doesn't support Guile integration.  Use build_w32.bat
+    if you want to build with Guile support.
+
+
+Building with (MSVC++-)cl using GNU make
+----------------------------------------
+
+ 2. If you already have a version of GNU make available you can use it
+    to build this version.  Open a W32 command prompt for your installed
+    (MSVC++-)cl, setup a correct PATH and other environment variables
+    for it (usually via executing vcvars32.bat or vsvars32.bat from the
+    cl-installation, or using a corresponding start menu entry from the
+    cl-installation), then execute ...
+
+        make -f Basic.mk
+
+    This produces an optimized WinRel/gnumake.exe.
+    If you want a version of GNU make built with debugging enabled,
+    add the TARGET_TYPE=debug option:
+
+        make -f Basic.mk TARGET_TYPE=debug
+
+    The makefile doesn't support Guile integration.  Use build_w32.bat
+    if you want to build with Guile support.
+
+
+Running the test suite
+----------------------
+
+ 3. You will need an installation of Perl.  Be sure to use a relatively
+    modern version: older versions will sometimes throw spurious errors.
+
+    To run the suite after building using GNU make, use:
+
+        make -f Basic.mk check
+
+    Alternatively if you'd like to run tests by hand, use:
+
+        cd tests
+        .\run_make_tests.bat -make <path-to-make>
+
+    I've found <path-to-make> seems to want forward-slashes in the path.
+    For example if building with .\build_w32.bat non-debug, use:
+
+        cd tests
+        .\run_make_tests.bat -make ../WinRel/gnumake.exe
+
+    I've tested this with the MSYS2 shell and POSIX tools installation
+    that you get by installing Git for Windows.
+
+
+
+-------------------
+-- Notes/Caveats --
+-------------------
+
+GNU make on Windows 32-bit platforms:
+
+        This version of make is ported natively to Windows32 platforms
+        (Windows NT 3.51, Windows NT 4.0, Windows 2000, Windows XP,
+        Windows 95, and Windows 98). It does not rely on any 3rd party
+        software or add-on packages for building. The only thing
+        needed is a Windows compiler.  Two compilers supported
+        officially are the MinGW port of GNU GCC, and the various
+        versions of the Microsoft C compiler.
+
+        Do not confuse this port of GNU make with other Windows32 projects
+        which provide a GNU make binary. These are separate projects
+        and are not connected to this port effort.
+
+GNU make and sh.exe:
+
+        This port prefers if you have a working sh.exe somewhere on
+        your system. If you don't have sh.exe, the port falls back to
+        MSDOS mode for launching programs (via a batch file).  The
+        MSDOS mode style execution has not been tested that carefully
+        though (The author uses GNU bash as sh.exe).
+
+        There are very few true ports of Bourne shell for NT right now.
+        There is a version of GNU bash available from Cygnus "Cygwin"
+        porting effort (http://www.cygwin.com/).
+        Other possibilities are the MKS version of sh.exe, or building
+        your own with a package like NutCracker (DataFocus) or Portage
+        (Consensys).  Also MinGW includes sh (http://mingw.org/).
+
+GNU make and brain-dead shells (BATCH_MODE_ONLY_SHELL):
+
+        Some versions of Bourne shell do not behave well when invoked
+        as 'sh -c' from CreateProcess().  The main problem is they seem
+        to have a hard time handling quoted strings correctly. This can
+        be circumvented by writing commands to be executed to a batch
+        file and then executing the command by calling 'sh file'.
+
+        To work around this difficulty, this version of make supports
+        a batch mode.  When BATCH_MODE_ONLY_SHELL is defined at compile
+        time, make forces all command lines to be executed via script
+        files instead of by command line.  In this mode you must have a
+        working sh.exe in order to use parallel builds (-j).
+
+        A native Windows32 system with no Bourne shell will also run
+        in batch mode.  All command lines will be put into batch files
+        and executed via $(COMSPEC) (%COMSPEC%).  However, parallel
+        builds ARE supported with Windows shells (cmd.exe and
+        command.com).  See the next section about some peculiarities
+        of parallel builds on Windows.
+
+Support for parallel builds
+
+        Parallel builds (-jN) are supported in this port.  The number of
+        concurrent processes has a hard limit of 4095.
+
+GNU make and Cygnus GNU Windows32 tools:
+
+        Good news! Make now has native support for Cygwin sh. To enable,
+        define the HAVE_CYGWIN_SHELL in config.h and rebuild make
+        from scratch. This version of make tested with B20.1 of Cygwin.
+        Do not define BATCH_MODE_ONLY_SHELL if you use HAVE_CYGWIN_SHELL.
+
+GNU make and the MKS shell:
+
+        There is now semi-official support for the MKS shell. To turn this
+        support on, define HAVE_MKS_SHELL in the config.h.W32 before you
+        build make.  Do not define BATCH_MODE_ONLY_SHELL if you turn
+        on HAVE_MKS_SHELL.
+
+GNU make handling of drive letters in pathnames (PATH, vpath, VPATH):
+
+        There is a caveat that should be noted with respect to handling
+        single character pathnames on Windows systems.  When colon is
+        used in PATH variables, make tries to be smart about knowing when
+        you are using colon as a separator versus colon as a drive
+        letter.  Unfortunately, something as simple as the string 'x:/'
+        could be interpreted 2 ways: (x and /) or (x:/).
+
+        Make chooses to interpret a letter plus colon (e.g. x:/) as a
+        drive letter pathname.  If it is necessary to use single
+        character directories in paths (VPATH, vpath, Path, PATH), the
+        user must do one of two things:
+
+         a. Use semicolon as the separator to disambiguate colon. For
+            example use 'x;/' if you want to say 'x' and '/' are
+            separate components.
+
+         b. Qualify the directory name so that there is more than
+            one character in the path(s) used. For example, none
+            of these settings are ambiguous:
+
+              ./x:./y
+              /some/path/x:/some/path/y
+              x:/some/path/x:x:/some/path/y
+
+        Please note that you are free to mix colon and semi-colon in the
+        specification of paths.  Make is able to figure out the intended
+        result and convert the paths internally to the format needed
+        when interacting with the operating system, providing the path
+        is not within quotes, e.g. "x:/test/test.c".
+
+        You are encouraged to use colon as the separator character.
+        This should ease the pain of deciding how to handle various path
+        problems which exist between platforms.  If colon is used on
+        both Unix and Windows systems, then no ifdef'ing will be
+        necessary in the makefile source.
+
+Pathnames and white space:
+
+        Unlike Unix, Windows 95/NT systems encourage pathnames which
+        contain white space (e.g. C:\Program Files\). These sorts of
+        pathnames are valid on Unix too, but are never encouraged.
+        There is at least one place in make (VPATH/vpath handling) where
+        paths containing white space will simply not work. There may be
+        others too. I chose to not try and port make in such a way so
+        that these sorts of paths could be handled. I offer these
+        suggestions as workarounds:
+
+                1. Use 8.3 notation. i.e. "x:/long~1/", which is actually
+                   "x:\longpathtest".  Type "dir /x" to view these filenames
+                   within the cmd.exe shell.
+                2. Rename the directory so it does not contain white space.
+
+        If you are unhappy with this choice, this is free software
+        and you are free to take a crack at making this work. The code
+        in w32/pathstuff.c and vpath.c would be the places to start.
+
+Pathnames and Case insensitivity:
+
+        Unlike Unix, Windows 95/NT systems are case insensitive but case
+        preserving.  For example if you tell the file system to create a
+        file named "Target", it will preserve the case.  Subsequent access to
+        the file with other case permutations will succeed (i.e. opening a
+        file named "target" or "TARGET" will open the file "Target").
+
+        By default, GNU make retains its case sensitivity when comparing
+        target names and existing files or directories.  It can be
+        configured, however, into a case preserving and case insensitive
+        mode by adding a define for HAVE_CASE_INSENSITIVE_FS to
+        config.h.W32.
+
+        For example, the following makefile will create a file named
+        Target in the directory subdir which will subsequently be used
+        to satisfy the dependency of SUBDIR/DepTarget on SubDir/TARGET.
+        Without HAVE_CASE_INSENSITIVE_FS configured, the dependency link
+        will not be made:
+
+        subdir/Target:
+                touch $@
+
+        SUBDIR/DepTarget: SubDir/TARGET
+                cp $^ $@
+
+        Reliance on this behavior also eliminates the ability of GNU make
+        to use case in comparison of matching rules.  For example, it is
+        not possible to set up a C++ rule using %.C that is different
+        than a C rule using %.c.  GNU make will consider these to be the
+        same rule and will issue a warning.
+
+SAMBA/NTFS/VFAT:
+
+        I have not had any success building the debug version of this
+        package using SAMBA as my file server. The reason seems to be
+        related to the way VC++ 4.0 changes the case name of the pdb
+        filename it is passed on the command line. It seems to change
+        the name always to to lower case. I contend that the VC++
+        compiler should not change the casename of files that are passed
+        as arguments on the command line. I don't think this was a
+        problem in MSVC 2.x, but I know it is a problem in MSVC 4.x.
+
+        The package builds fine on VFAT and NTFS filesystems.
+
+        Most all of the development I have done to date has been using
+        NTFS and long file names. I have not done any considerable work
+        under VFAT. VFAT users may wish to be aware that this port of
+        make does respect case sensitivity.
+
+FAT:
+
+        Version 3.76 added support for FAT filesystems. Make works
+        around some difficulties with stat'ing of files and caching of
+        filenames and directories internally.
+
+Bug reports:
+
+        Please submit bugs via the normal bug reporting mechanism which
+        is described in the GNU make manual and the base README.
+
+-------------------------------------------------------------------------------
+Copyright (C) 1996-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.

README.customs

@@ -0,0 +1,112 @@
+                                                            -*-indented-text-*-
+
+GNU make can utilize the Customs library, distributed with Pmake, to
+provide builds distributed across multiple hosts.
+
+In order to utilize this capability, you must first download and build
+the Customs library.  It is contained in the Pmake distribution, which
+can be obtained at:
+
+  ftp://ftp.icsi.berkeley.edu/pub/ai/stolcke/software/
+
+This integration was tested (superficially) with Pmake 2.1.33.
+
+
+BUILDING CUSTOMS
+----------------
+
+First, build pmake and Customs.  You need to build pmake first, because
+Customs require pmake to build.  Unfortunately, this is not trivial;
+please see the pmake and Customs documentation for details.  The best
+place to look for instructions is in the pmake-2.1.33/INSTALL file.
+
+Note that the 2.1.33 Pmake distribution comes with a set of patches to
+GNU make, distributed in the pmake-2.1.33/etc/gnumake/ directory.  These
+patches are based on GNU make 3.75 (there are patches for earlier
+versions of GNU make, also).  The parts of this patchfile which relate
+directly to Customs support have already been incorporated into this
+version of GNU make, so you should _NOT_ apply the patch file.
+
+However, there are a few non-Customs specific (as far as I could tell)
+changes here which are not incorporated (for example, the modification
+to try expanding -lfoo to libfoo.so).  If you rely on these changes
+you'll need to re-apply them by hand.
+
+Install the Customs library and header files according to the
+documentation.  You should also install the man pages (contrary to
+comments in the documentation, they weren't installed automatically for
+me; I had to cd to the 'pmake-2.1.33/doc' directory and run 'pmake
+install' there directly).
+
+
+BUILDING GNU MAKE
+-----------------
+
+Once you've installed Customs, you can build GNU make to use it.  When
+configuring GNU make, merely use the '--with-customs=DIR' option.
+Provide the directory containing the 'lib' and 'include/customs'
+subdirectories as DIR.  For example, if you installed the customs
+library in /usr/local/lib and the headers in /usr/local/include/customs,
+then you'd pass '--with-customs=/usr/local' as an option to configure.
+
+Run make (or use build.sh) normally to build GNU make as described in
+the INSTALL file.
+
+See the documentation for Customs for information on starting and
+configuring Customs.
+
+
+INVOKING CUSTOMS-IZED GNU MAKE
+-----------------------------
+
+One thing you should be aware of is that the default build environment
+for Customs requires root permissions.  Practically, this means that GNU
+make must be installed setuid root to use Customs.
+
+If you don't want to do this, you can build Customs such that root
+permissions are not necessary.  Andreas Stolcke <stolcke@speech.sri.com>
+writes:
+
+ > pmake, gnumake or any other customs client program is not required to
+ > be suid root if customs was compiled WITHOUT the USE_RESERVED_PORTS
+ > option in customs/config.h.  Make sure the "customs" service in
+ > /etc/services is defined accordingly (port 8231 instead of 1001).
+
+ > Not using USE_RESERVED_PORTS means that a user with programming
+ > skills could impersonate another user by writing a fake customs
+ > client that pretends to be someone other than himself.  See the
+ > discussion in etc/SECURITY.
+
+
+PROBLEMS
+--------
+
+SunOS 4.1.x:
+  The customs/sprite.h header file #includes the <malloc.h> header
+  files; this conflicts with GNU make's configuration so you'll get a
+  compile error if you use GCC (or any other ANSI-capable C compiler).
+
+  I commented out the #include in sprite.h:107:
+
+    #if defined(sun) || defined(ultrix) || defined(hpux) || defined(sgi)
+    /* #include <malloc.h> */
+    #else
+
+  YMMV.
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 1998-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.

README.git

@@ -0,0 +1,290 @@
+                                                                     -*-text-*-
+
+-------------------------------------------------------------------------------
+Copyright (C) 2002-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.
+-------------------------------------------------------------------------------
+
+Obtaining Git Code
+------------------
+
+This seems redundant, since if you're reading this you most likely have
+already performed this step; however, for completeness, you can obtain the GNU
+make source code via Git from the FSF's Savannah project
+<http://savannah.gnu.org/projects/make/>:
+
+  $ git clone git://git.savannah.gnu.org/make.git
+
+
+Changes using Git
+-----------------
+
+For non-developers, you can continue to provide patches as before, or if you
+make a public repository I can pull from that if you prefer.
+
+Starting with GNU make 4.0 we no longer keep a separate ChangeLog file in
+source control.  We use the Gnulib git-to-changelog conversion script to
+convert the Git comments into ChangeLog-style entries for release.  As a
+result, please format your Git comments carefully so they will look clean
+after conversion.  In particular, each line of your comment will have a TAB
+added before it so be sure your comment lines are not longer than 72
+characters; prefer 70 or less.  Please use standard ChangeLog formats for
+your commit messages (sans the leading TAB of course).
+
+Rule #1: Don't rewrite pushed history (don't use "git push --force").
+
+Typical simple workflow might be:
+
+  * Edit files
+  * Use "git status" and "git diff" to verify your changes
+  * Use "git add" to stage the changes you want to make
+  * Use "git commit" to commit the staged changes to your local repository
+  * Use "git pull" to accept & merge new changes from the Savannah repository
+  * Use "git push" to push your commits back to the Savannah repository
+
+For Emacs users, there are many options for Git integration but I strongly
+recommend the Magit package: http://www.emacswiki.org/emacs/Magit
+It makes the workflow much clearer, and has advanced features such as
+constructing multiple commits from various files and even from different
+diff chunks in the same file.  There is a video available which helps a lot.
+
+
+Coding Standards
+----------------
+
+GNU make code adheres to the GNU Coding Standards.  Please use only spaces and
+no TAB characters in source code.
+
+Additionally, GNU make is a foundational bootstrap package for the GNU
+project; as such it is very conservative about language features it expects.
+It should build with any C compiler conforming to the ANSI C89 / ISO C90
+standard.
+
+
+Building From Git for POSIX
+---------------------------
+
+To build GNU make from Git on POSIX systems such as GNU/Linux, you will
+need to install the following extra software:
+
+* autoconf
+* automake >= 1.16.1
+* gettext
+* autopoint
+* pkg-config
+* texinfo (for makeinfo)
+
+And any tools that those utilities require (GNU m4, Perl, etc.)
+
+GNU make requires gnulib to provide some facilities.  If you want to maintain
+a local installation of gnulib you can set GNULIB_SRCDIR to point to it.
+Otherwise, ./bootstrap will obtain a clone for you.
+
+Unfortunately due to issues with gnulib's getloadavg, you must have automake
+1.16.1 or above.  This version is not yet widely available in GNU/Linux
+package managers.  If you need to install from source be sure to set
+ACLOCAL_PATH to point to the pkg-config location (e.g., /usr/share/aclocal).
+
+
+When building from Git you must build in the source directory: "VPATH
+builds" from remote directories are not supported.  Once you've created
+a distribution, of course, you can unpack it and do a VPATH build from
+there.
+
+After checking out the code, you will need to run the bootstrap script:
+
+ $ ./bootstrap
+
+At this point you have successfully brought your Git copy of the GNU
+make source directory up to the point where it can be treated
+more-or-less like the official package you would get from ftp.gnu.org.
+That is, you can just run:
+
+  $ ./configure
+  $ make check
+  $ make install
+
+to build and install GNU make.
+
+
+Building From Git for Windows
+-----------------------------
+
+If you have a UNIX emulation like CYGWIN you can opt to run the general
+build procedure above; it will work.  Consult README.W32.template for
+information on options you might want to use when running ./configure.
+
+If you can't or don't want to do that, then first run the .\bootstrap.bat
+script to prime your Git workspace:
+
+  > .\bootstrap.bat
+
+Next, rename the file README.W32.template to README.W32 and follow those
+instructions.
+
+
+Creating a Package
+------------------
+
+Once you have performed the above steps (including the configuration and
+build) you can create a GNU make package.  This is very simple, just
+run:
+
+  $ make dist-gzip
+
+and, if you like:
+
+  $ make dist-bzip2
+
+Even better, you should run this:
+
+  $ make distcheck
+
+Which will build both .gz and .bz2 package files, then unpack them into
+a temporary location, try to build them, and repack them, verifying that
+everything works, you get the same results, _and_ no extraneous files
+are left over after the "distclean" rule--whew!!  Now, _that_ is why
+converting to Automake is worth the trouble!  A big "huzzah!" to Tom
+T. and the AutoToolers!
+
+
+Steps to Release
+----------------
+
+Here are the things that need to be done (in more or less this order)
+before making an official release.  If something breaks such that you need to
+change code, be sure to start over again sufficiently that everything is
+consistent (that's why we don't finalize the Git tag, etc. until the end).
+
+  * Update the configure.ac file with the new release number.
+  * Update the EDITION value in the doc/make.texi file.
+  * Update the NEWS file with the release number and date.
+  * Ensure the Savannah bug list URL in the NEWS file uses the correct
+    "Fixed Release" ID number.
+  * Run "make distcheck" to be sure it all works.
+  * Run "make check-alt-config" to be sure alternative configurations work
+  * Run "make update-makeweb" to get a copy of the GNU make web pages
+  * Run "make update-gnuweb" to get a copy of the GNU website boilerplate pages
+  * Update the web page boilerplate if necessary:
+      ../gnu-www/www/server/standards/patch-from-parent ../make-web/make.html \
+            ../gnu-www/www/server/standards/boilerplate.html
+  * Run "make gendocs" (requires gnulib) to generate the manual files for
+    the GNU make web pages.
+  * Follow the directions from gendocs for the web page repository
+  * run "make tag-release" to create a Git tag for the release
+  * Push everything:
+    git push --tags origin master
+
+Manage the Savannah project for GNU make:
+
+  >>> This is only for real releases, not release candidate builds <<<
+
+  * In Savannah modify the "Value", "Rank", and "Description" values for the
+    current "SCM" entry in both "Component Version" and "Fix Release" fields
+    to refer to the new release.  The "Rank" field should be 10 less than the
+    previous release so it orders properly.
+  * In Savannah create a new entry for the "Component Version" and "Fix
+    Release" fields:
+      - Value: SCM
+      - Rank:  20
+      - Descr: Issues found in code retrieved from Source Code Management (Git), rather than a distributed version. Please include the SHA you are working with.
+
+      - Descr: Fixed in Source Code Management (Git). The fix will be included in the next release of GNU make.
+
+Start the next release:
+
+  * Update configure.ac and add a ".90" to the release number.
+  * Update the NEWS file with a new section for the release / date.
+  * Update the Savannah URL for the bugs fixed in the NEWS section.
+
+
+Publishing a Package
+--------------------
+
+In order to publish a package on the FSF FTP site, either the release
+site ftp://ftp.gnu.org, or the prerelease site ftp://alpha.gnu.org, you
+first need to have my GPG private key and my passphrase to unlock it.
+And, you can't have them!  So there!  But, just so I remember here's
+what to do:
+
+  Make sure the "Steps to Release" are complete and committed and tagged.
+
+  git clone git://git.savannah.gnu.org/make.git make-release
+
+  cd make-release
+
+  <run the commands above to build the release>
+
+  make upload-alpha             # for alpha.gnu.org (pre-releases)
+       -OR-
+  make upload-ftp               # for ftp.gnu.org (official releases)
+
+Depending on your distribution (whether GnuPG is integrated with your keyring
+etc.) it will either pop up a window asking for your GPG key passphrase one
+time, or else it will use the CLI to ask for the GPG passphrase _THREE_ times.
+Sigh.
+
+
+For both final releases and pre-releases, send an email with the URL of
+the package to the GNU translation robot to allow the translators to
+work on it:
+
+     <coordinator@translationproject.org>
+
+
+Where to Announce
+-----------------
+
+Create the announcement in a text file, using 'git shortlog',
+then sign it with GPG:
+
+  gpg --clearsign <announcement.txt>
+
+Or, use your mail client's PGP/GPG signing capabilities.
+
+Announce the release:
+
+  * For release candidate builds:
+    To:  bug-make@gnu.org
+    CC:  coordinator@translationproject.org
+    BCC: help-make@gnu.org, make-w32@gnu.org, make-alpha@gnu.org
+
+  * For release builds
+    To:  info-gnu@gnu.org, bug-make@gnu.org
+    CC:  coordinator@translationproject.org
+    BCC: help-make@gnu.org, make-w32@gnu.org, make-alpha@gnu.org
+
+    * Add a news item to the Savannah project site.
+    * Add an update to freecode.com (nee freshmeat.net)
+
+
+Appendix A - For The Brave
+--------------------------
+
+For those of you who trust me implicitly, or are just brave (or
+foolhardy), here is a canned sequence of commands to build a GNU make
+distribution package from a virgin Git source checkout (assuming all the
+prerequisites are available of course).
+
+This list is eminently suitable for a quick swipe o' the mouse and a
+swift click o' mouse-2 into an xterm.  Go for it!
+
+For a debugging version:
+
+./bootstrap && ./configure CFLAGS=-g && make check
+
+For a release version
+
+./bootstrap && ./configure && make check

README.template

@@ -0,0 +1,188 @@
+This directory contains the %VERSION% release of GNU Make.
+
+See the file NEWS for the user-visible changes from previous releases.
+In addition, there have been bugs fixed.
+
+Please check the system-specific notes below for any caveats related to your
+operating system.
+
+If you are trying to build GNU make from a Git clone rather than a downloaded
+source distribution, see the README.git file for instructions.
+
+For source distribution building and installation instructions, see the file
+INSTALL.
+
+If you need to build GNU Make and have no other 'make' program to use, you can
+use the shell script 'build.sh' instead.  To do this, first run 'configure' as
+described in INSTALL.  Then, instead of typing 'make' to build the program,
+type 'sh build.sh'.  This should compile the program in the current directory.
+Then you will have a Make program that you can use for './make install', or
+whatever else.
+
+Some systems' Make programs cannot process the Makefile for GNU Make.  If you
+get errors from your system's Make when building GNU Make, try using
+'build.sh' instead.
+
+
+GNU Make is free software.  See the file COPYING for copying conditions.
+GNU Make is copyright by the Free Software Foundation.  Copyright notices
+condense sequential years into a range; e.g. "1987-1994" means all years
+from 1987 to 1994 inclusive.
+
+Downloading
+-----------
+
+GNU Make can be obtained in many different ways.  See a description here:
+
+  http://www.gnu.org/software/software.html
+
+
+Documentation
+-------------
+
+GNU make is fully documented in the GNU Make manual, which is contained
+in this distribution as the file make.texinfo.  You can also find
+on-line and preformatted (PostScript and DVI) versions at the FSF's web
+site.  There is information there about ordering hardcopy documentation.
+
+  http://www.gnu.org/
+  http://www.gnu.org/doc/doc.html
+  http://www.gnu.org/manual/manual.html
+
+
+Development
+-----------
+
+GNU Make development is hosted by Savannah, the FSF's online development
+management tool.  Savannah is here:
+
+  http://savannah.gnu.org
+
+And the GNU Make development page is here:
+
+  http://savannah.gnu.org/projects/make/
+
+You can find most information concerning the development of GNU Make at
+this site.
+
+
+Bug Reporting
+-------------
+
+You can send GNU make bug reports to <bug-make@gnu.org>.  Please see the
+section of the GNU make manual entitled 'Problems and Bugs' for
+information on submitting useful and complete bug reports.
+
+You can also use the online bug tracking system in the Savannah GNU Make
+project to submit new problem reports or search for existing ones:
+
+  http://savannah.gnu.org/bugs/?group=make
+
+If you need help using GNU make, try these forums:
+
+  help-make@gnu.org
+  help-utils@gnu.org
+  news:gnu.utils.help
+  news:gnu.utils.bug
+
+
+Git Access
+----------
+
+The GNU make source repository is available via Git from the GNU Savannah Git
+server; look here for details:
+
+  http://savannah.gnu.org/git/?group=make
+
+Please note: you won't be able to build GNU make from Git without installing
+appropriate maintainer's tools, such as GNU m4, automake, autoconf, Perl, GNU
+make, and GCC.
+
+See the README.git file for instructions on how to build GNU make once these
+tools are available.  We make no guarantees about the contents or quality of
+the latest code in the Git repository: it is not unheard of for code that is
+known to be broken to be checked in.  Use at your own risk.
+
+
+System-specific Notes
+---------------------
+
+It has been reported that the XLC 1.2 compiler on AIX 3.2 is buggy such
+that if you compile make with 'cc -O' on AIX 3.2, it will not work
+correctly.  It is said that using 'cc' without '-O' does work.
+
+The standard /bin/sh on SunOS 4.1.3_U1 and 4.1.4 is broken and cannot be
+used to configure GNU make.  Please install a different shell such as
+bash or pdksh in order to run "configure".  See this message for more
+information:
+  http://mail.gnu.org/archive/html/bug-autoconf/2003-10/msg00190.html
+
+One area that is often a problem in configuration and porting is the code
+to check the system's current load average.  To make it easier to test and
+debug this code, you can do 'make check-loadavg' to see if it works
+properly on your system.  (You must run 'configure' beforehand, but you
+need not build Make itself to run this test.)
+
+Another potential source of porting problems is the support for large
+files (LFS) in configure for those operating systems that provide it.
+Please report any bugs that you find in this area.  If you run into
+difficulties, then as a workaround you should be able to disable LFS by
+adding the '--disable-largefile' option to the 'configure' script.
+
+On systems that support micro- and nano-second timestamp values and
+where stat(2) provides this information, GNU make will use it when
+comparing timestamps to get the most accurate possible result.  However,
+note that many current implementations of tools that *set* timestamps do
+not preserve micro- or nano-second granularity.  This means that "cp -p"
+and other similar tools (tar, etc.) may not exactly duplicate timestamps
+with micro- and nano-second granularity on some systems.  If your build
+system contains rules that depend on proper behavior of tools like "cp
+-p", you should consider using the .LOW_RESOLUTION_TIME pseudo-target to
+force make to treat them properly.  See the manual for details.
+
+
+Ports
+-----
+
+  - See README.customs for details on integrating GNU make with the
+    Customs distributed build environment from the Pmake distribution.
+
+  - See README.VMS for details about GNU Make on OpenVMS.
+
+  - See README.Amiga for details about GNU Make on AmigaDOS.
+
+  - See README.W32 for details about GNU Make on Windows NT, 95, or 98.
+
+  - See README.DOS for compilation instructions on MS-DOS and MS-Windows
+    using DJGPP tools.
+
+    A precompiled binary of the MSDOS port of GNU Make is available as part
+    of DJGPP; see the WWW page http://www.delorie.com/djgpp/ for more
+    information.
+
+    The Cygwin project maintains its own port of GNU make.  That port may have
+    patches which are not present in this version.  If you are using Cygwin
+    you should use their version of GNU make, and if you have questions about
+    it you should start by asking on those mailing lists and forums.
+
+Please note there are two _separate_ ports of GNU make for Microsoft
+systems: a native Windows tool built with (for example) MSVC or Cygwin,
+and a DOS-based tool built with DJGPP.  Please be sure you are looking
+at the right README!
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 1988-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.

SCOPTIONS

@@ -0,0 +1,13 @@
+ERRORREXX
+OPTIMIZE
+NOVERSION
+OPTIMIZERTIME
+OPTIMIZERALIAS
+DEFINE HAVE_CONFIG_H
+DEFINE INCLUDEDIR="include:"
+DEFINE LIBDIR="lib:"
+DEFINE NO_ALLOCA
+DEFINE NO_ARCHIVES
+IGNORE=161
+IGNORE=100
+STARTUP=cres

TODO.private

@@ -0,0 +1,117 @@
+                                                            -*-Indented-Text-*-
+GNU Make TODO List
+------------------
+
+This list comes both from the authors and from users of GNU make.
+
+They are listed in no particular order!
+
+Also, I don't guarantee that all of them will be ultimately deemed "good
+ideas" and implemented.  These are just the ones that, at first blush,
+seem to have some merit (and that I can remember).
+
+However, if you see something here you really, really want, speak up.
+All other things being equal, I will tend to implement things that seem
+to maximize user satisfaction.
+
+If you want to implement some of them yourself, barring the ones I've
+marked below, have at it!  Please contact me first to let me know you're
+working on it, and give me some info about the design--and, critically,
+information about any user-visible syntax change, etc.
+
+
+The Top Item
+------------
+
+If you know perl (or want to learn DejaGNU or similar), the number one
+priority on my list of things I don't have time to do right now is
+fixing up the GNU make test suite.  Most importantly it needs to be made
+"parallelizable", so more than one regression can run at the same time
+(essentially, make the "work" directory local).  Also, the CWD during
+the test should be in the work directory or, better, a test-specific
+temporary directory so each test gets a new directory; right now
+sometimes tests leak files into the main directory which causes
+subsequent tests to fail (some tests may need to be tweaked).  Beyond
+that, any cleanup done to make writing, reading, or handling tests
+simpler would be great!  Please feel free to make whatever changes you
+like to the current tests, given some high-level goals, and that you'll
+port the current tests to whatever you do :).
+
+
+The Rest of the List
+--------------------
+
+ 1) Option to check more than timestamps to determine if targets have
+    changed.  This is also a very big one.  It's _close_ to my plate :),
+    and I have very definite ideas about how I would like it done.
+    Please pick something else unless you must have this feature.  If
+    you try it, please work _extremely_ closely with me on it.
+
+ 1a) Possibly a special case of this is the .KEEP_STATE feature of Sun's
+     make.  Some great folks at W U. in Canada did an implementation of
+     this for a class project.  Their approach is reasonable and
+     workable, but doesn't really fit into my ideas for #2.  Maybe
+     that's OK.  I have paperwork for their work so if you want to do
+     this one talk to me to get what they've already done.
+
+     [K R Praveen <praveen@cair.res.in>]
+
+ 2) Currently you can use "%.foo %.bar : %.baz" to mean that one
+    invocation of the rule builds both targets.  GNU make needs a way to
+    do that for explicit rules, too.  I heard a rumor that some versions
+    of make all you to say "a.foo + a.bar : a.baz" to do this (i.e., a
+    "+" means one invocation builds both).  Don't know if this is the
+    best syntax or not... what if you say "a.foo + a.bar a.bam : a.baz";
+    what does that mean?
+
+ 3) Multi-token pattern rule matching (allow %1/%2.c : %1/obj/%2.o,
+    etc., or something like that).  Maybe using regex?
+
+ 4) Provide a .TARGETS variable, containing the names of the targets
+    defined in the makefile.
+
+    Actually, I now think a $(targets ...) function, at least, might be
+    better than a MAKETARGETS variable.  The argument would be types of
+    targets to list: "phony" is the most useful one.  I suppose
+    "default" might also be useful.  Maybe some others; check the
+    bitfields to see what might be handy.
+
+ 5) Some sort of operating-system independent way of handling paths
+    would be outstanding, so makefiles can be written for UNIX, VMS,
+    DOS, MS-Windows, Amiga, etc. with a minimum of specialization.
+
+    Or, perhaps related/instead of, some sort of meta-quoting syntax so
+    make can deal with filenames containing spaces, colons, etc.  I
+    dunno, maybe something like $[...]?  This may well not be worth
+    doing until #1 is done.
+
+ 6) Right now the .PRECIOUS, .INTERMEDIATE, and .SECONDARY
+    pseudo-targets have different capabilities.  For example, .PRECIOUS
+    can take a "%", the others can't.  Etc.  These should all work the
+    same, insofar as that makes sense.
+
+ 7) Improved debugging/logging/etc. capabilities.  Part of this is done:
+    I introduced a number of debugging enhancements.  Tim Magill is (I
+    think) looking into options to control output more selectively.
+    One thing I want to do in debugging is add a flag to allow debugging
+    of variables as they're expanded (!).  This would be incredibly
+    verbose, but could be invaluable when nothing else seems to work and
+    you just can't figure it out.  The way variables are expanded now
+    means this isn't 100% trivial, but it probably won't be hard.
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 1997-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.

bootstrap.bat

@@ -0,0 +1,34 @@
+@echo off
+:: Copyright (C) 2018-2019 Free Software Foundation, Inc.
+:: This file is part of GNU Make.
+::
+:: GNU Make is free software; you can redistribute it and/or modify it under
+:: the terms of the GNU General Public License as published by the Free
+:: Software Foundation; either version 3 of the License, or (at your option)
+:: any later version.
+::
+:: GNU Make is distributed in the hope that it will be useful, but WITHOUT
+:: ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+:: FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for.
+:: more details.
+::
+:: You should have received a copy of the GNU General Public License along
+:: with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+setlocal
+set "svurl=https://git.savannah.gnu.org/cgit"
+set "gnuliburl=%svurl%/gnulib.git/plain"
+
+call :Download lib getloadavg.c
+call :Download lib intprops.h
+goto :Done
+
+:Download
+echo Downloading %1\%2
+curl -sS -o %1\%2 "%gnuliburl%/%1/%2"
+if ERRORLEVEL 1 exit /b 1
+goto :EOF
+
+:Done
+echo Done.  Run buld_w32.bat to build GNU make.
+goto :EOF

bootstrap.conf

@@ -0,0 +1,52 @@
+# Bootstrap configuration.                                   -*-shell-script-*-
+
+# Copyright (C) 2018-2019 Free Software Foundation, Inc.
+
+# GNU Make is free software: you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free
+# Software Foundation; either version 3 of the License, or (at your option)
+# any later version.
+
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# Allow bootstrap to know that this is not a package
+checkout_only_file=README.git
+
+# Additional xgettext options to use.  Use "\\\newline" to break lines.
+# Ensure that all our magical output macros are correctly marked as
+# C (printf) format strings.
+XGETTEXT_OPTIONS='\\\
+ --from-code=UTF-8\\\
+ --flag=_:1:pass-c-format\\\
+ --flag=N_:1:pass-c-format\\\
+ --flag=DB:2:c-format --flag=DBF:2:c-format --flag=DBS:2:c-format\\\
+ --flag=O:3:c-format  --flag=OSN:3:c-format --flag=ONS:3:c-format\\\
+ --flag=OS:3:c-format --flag=OSS:3:c-format --flag=OSSS:3:c-format\\\
+ --flag=ON:3:c-format --flag=ONN:3:c-format\\\
+'
+
+# We manage our own .gitignore files
+vc_ignore=
+
+# Build prerequisites
+buildreq="\
+autoconf   2.69
+automake   1.16.1
+"
+
+gnulib_name=libgnu
+gnulib_files=doc/make-stds.texi
+
+gnulib_modules="\
+alloca
+fdl
+getloadavg
+host-cpu-c-abi
+strerror
+make-glob"

build.template

@@ -0,0 +1,89 @@
+#!/bin/sh
+# Shell script to build GNU Make in the absence of any 'make' program.
+# @configure_input@
+
+# Copyright (C) 1993-2019 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# See Makefile.in for comments describing these variables.
+
+LIBOBJDIR=lib/
+U=
+
+top_srcdir="@top_srcdir@"
+CC="@CC@"
+CFLAGS="@CFLAGS@ @GUILE_CFLAGS@"
+CPPFLAGS="@CPPFLAGS@"
+LDFLAGS="@AM_LDFLAGS@ @LDFLAGS@"
+ALLOCA="@ALLOCA@"
+LOADLIBES="@LIBS@ @GUILE_LIBS@ @LIBINTL@"
+LIBOBJS="@LIBOBJS@"
+REMOTE="@REMOTE@"
+OBJEXT="@OBJEXT@"
+EXEEXT="@EXEEXT@"
+
+# Use our old-style glob implementation
+test x"@USE_SYSTEM_GLOB@" = xno && LIBOBJS="${LIBOBJS} ${LIBOBJDIR}fnmatch.$OBJEXT ${LIBOBJDIR}glob.$OBJEXT"
+
+# Common prefix for machine-independent installed files.
+prefix="@prefix@"
+# Common prefix for machine-dependent installed files.
+exec_prefix=`eval echo @exec_prefix@`
+# Directory to find libraries in for '-lXXX'.
+libdir=${exec_prefix}/lib
+# Directory to search by default for included makefiles.
+includedir=${prefix}/include
+
+localedir=${prefix}/share/locale
+
+defines="-DLOCALEDIR=\"${localedir}\" -DLIBDIR=\"${libdir}\" -DINCLUDEDIR=\"${includedir}\" @DEFS@"
+
+# Exit as soon as any command fails.
+set -e
+
+# These are all the objects we need to link together.
+objs="%objs% src/remote-${REMOTE}.${OBJEXT} ${LIBOBJS}"
+
+case $LIBOBJS in
+    (*alloca*) cp "$top_srcdir"/lib/alloca.in.h lib/alloca.h ;;
+esac
+case $LIBOBJS in
+    (*fnmatch*) cp "$top_srcdir"/lib/fnmatch.in.h lib/fnmatch.h ;;
+esac
+case $LIBOBJS in
+    (*glob*) cp "$top_srcdir"/lib/glob.in.h lib/glob.h ;;
+esac
+
+# Compile the source files into those objects.
+for file in `echo ${objs} | sed 's/\.'${OBJEXT}'/.c/g'`; do
+  echo compiling ${file}...
+  $CC $defines $CPPFLAGS $CFLAGS \
+      -c -Isrc -I"$top_srcdir"/src -Ilib -I"$top_srcdir"/lib "$top_srcdir"/$file
+done
+
+# The object files were actually all put in the current directory.
+# Remove the source directory names from the list.
+srcobjs="$objs"
+objs=
+for obj in $srcobjs; do
+  objs="$objs `basename $obj`"
+done
+
+# Link all the objects together.
+echo linking make...
+$CC $CFLAGS $LDFLAGS $objs $LOADLIBES -o makenew${EXEEXT}
+echo done
+mv -f makenew${EXEEXT} make${EXEEXT}

build_w32.bat

@@ -0,0 +1,395 @@
+@echo off
+:: Copyright (C) 1996-2019 Free Software Foundation, Inc.
+:: This file is part of GNU Make.
+::
+:: GNU Make is free software; you can redistribute it and/or modify it under
+:: the terms of the GNU General Public License as published by the Free
+:: Software Foundation; either version 3 of the License, or (at your option)
+:: any later version.
+::
+:: GNU Make is distributed in the hope that it will be useful, but WITHOUT
+:: ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+:: FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for.
+:: more details.
+::
+:: You should have received a copy of the GNU General Public License along
+:: with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+setlocal
+if not "%RECURSEME%"=="%~0" (
+    set "RECURSEME=%~0"
+    %ComSpec% /s /c ""%~0" %*"
+    goto :EOF
+)
+
+call :Reset
+
+if "%1" == "-h" goto Usage
+if "%1" == "--help" goto Usage
+
+echo.
+echo Creating GNU Make for Windows 9X/NT/2K/XP/Vista/7/8/10
+echo.
+
+set MAKE=gnumake
+set GUILE=Y
+set COMPILER=cl.exe
+set O=obj
+set ARCH=x64
+set DEBUG=N
+
+if exist maintMakefile (
+    set MAINT=Y
+) else (
+    set MAINT=N
+)
+
+:ParseSW
+if "%1" == "--debug" goto SetDebug
+if "%1" == "--without-guile" goto NoGuile
+if "%1" == "--x86" goto Set32Bit
+if "%1" == "gcc" goto SetCC
+if "%1" == "" goto DoneSW
+goto Usage
+
+:SetDebug
+set DEBUG=Y
+echo - Building without compiler optimizations
+shift
+goto ParseSW
+
+:NoGuile
+set GUILE=N
+echo - Building without Guile
+shift
+goto ParseSW
+
+:Set32Bit
+set ARCH=x86
+echo - Building 32bit GNU Make
+shift
+goto ParseSW
+
+:SetCC
+set COMPILER=gcc
+set O=o
+echo - Building with GCC
+shift
+goto ParseSW
+
+:DoneSW
+if "%MAINT%" == "Y" echo - Enabling maintainer mode
+
+if "%COMPILER%" == "gcc" goto FindGcc
+
+:: Find a compiler.  Visual Studio requires a lot of effort to locate :-/.
+%COMPILER% >nul 2>&1
+if not ERRORLEVEL 1 goto FoundMSVC
+
+:: Visual Studio 17 and above provides the "vswhere" tool
+call :FindVswhere
+if ERRORLEVEL 1 goto LegacyVS
+
+for /f "tokens=* usebackq" %%i in (`%VSWHERE% -latest -property installationPath`) do (
+    set InstallPath=%%i
+)
+set "VSVARS=%InstallPath%\VC\Auxiliary\Build\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+:: No "vswhere" or it can't find a compiler.  Go old-school.
+:LegacyVS
+set "VSVARS=%VS150COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%VS140COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%VS120COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%VS110COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%VS100COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%VS90COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%VS80COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%VS71COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%VS70COMNTOOLS%\..\..\VC\vcvarsall.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%V6TOOLS%\VC98\Bin\vcvars32.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%V6TOOLS%\VC97\Bin\vcvars32.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+set "VSVARS=%V5TOOLS%\VC\Bin\vcvars32.bat"
+call :CheckMSVC
+if not ERRORLEVEL 1 goto FoundMSVC
+
+:: We did not find anything--fail
+echo No MSVC compiler available.
+echo Please run vcvarsall.bat and/or configure your Path.
+exit 1
+
+:FoundMSVC
+set OUTDIR=.\WinRel
+set "OPTS=/O2 /D NDEBUG"
+set LINKOPTS=
+if "%DEBUG%" == "Y" set OUTDIR=.\WinDebug
+if "%DEBUG%" == "Y" set "OPTS=/Zi /Od /D _DEBUG"
+if "%DEBUG%" == "Y" set LINKOPTS=/DEBUG
+if "%MAINT%" == "Y" set "OPTS=%OPTS% /D MAKE_MAINTAINER_MODE"
+:: Show the compiler version that we found
+:: Unfortunately this also shows a "usage" note; I can't find anything better.
+echo.
+%COMPILER%
+goto Build
+
+:FindGcc
+set OUTDIR=.\GccRel
+set OPTS=-O2
+if "%DEBUG%" == "Y" set OPTS=-O0
+if "%DEBUG%" == "Y" set OUTDIR=.\GccDebug
+if "%MAINT%" == "Y" set "OPTS=%OPTS% -DMAKE_MAINTAINER_MODE"
+:: Show the compiler version that we found
+echo.
+%COMPILER% --version
+if not ERRORLEVEL 1 goto Build
+echo No %COMPILER% found.
+exit 1
+
+:Build
+:: Clean the directory if it exists
+if exist %OUTDIR%\nul rmdir /S /Q %OUTDIR%
+
+:: Recreate it
+mkdir %OUTDIR%
+mkdir %OUTDIR%\src
+mkdir %OUTDIR%\src\w32
+mkdir %OUTDIR%\src\w32\compat
+mkdir %OUTDIR%\src\w32\subproc
+mkdir %OUTDIR%\lib
+
+if "%GUILE%" == "Y" call :ChkGuile
+
+echo.
+echo Compiling %OUTDIR% version
+
+if exist src\config.h.W32.template call :ConfigSCM
+copy src\config.h.W32 %OUTDIR%\src\config.h
+
+copy lib\glob.in.h %OUTDIR%\lib\glob.h
+copy lib\fnmatch.in.h %OUTDIR%\lib\fnmatch.h
+
+if exist %OUTDIR%\link.sc del %OUTDIR%\link.sc
+
+call :Compile src\ar
+call :Compile src\arscan
+call :Compile src\commands
+call :Compile src\default
+call :Compile src\dir
+call :Compile src\expand
+call :Compile src\file
+call :Compile src\function
+call :Compile src\getopt
+call :Compile src\getopt1
+call :Compile src\guile GUILE
+call :Compile src\hash
+call :Compile src\implicit
+call :Compile src\job
+call :Compile src\load
+call :Compile src\loadapi
+call :Compile src\main GUILE
+call :Compile src\misc
+call :Compile src\output
+call :Compile src\read
+call :Compile src\remake
+call :Compile src\remote-stub
+call :Compile src\rule
+call :Compile src\signame
+call :Compile src\strcache
+call :Compile src\variable
+call :Compile src\version
+call :Compile src\vpath
+call :Compile src\w32\pathstuff
+call :Compile src\w32\w32os
+call :Compile src\w32\compat\posixfcn
+call :Compile src\w32\subproc\misc
+call :Compile src\w32\subproc\sub_proc
+call :Compile src\w32\subproc\w32err
+call :Compile lib\fnmatch
+call :Compile lib\glob
+call :Compile lib\getloadavg
+
+if not "%COMPILER%" == "gcc" call :Compile src\w32\compat\dirent
+
+call :Link
+
+echo.
+if exist %OUTDIR%\%MAKE%.exe goto Success
+echo %OUTDIR% build FAILED!
+exit 1
+
+:Success
+echo %OUTDIR% build succeeded.
+if exist Basic.mk copy /Y Basic.mk Makefile
+call :Reset
+goto :EOF
+
+::
+:: Subroutines
+::
+
+:Compile
+echo %OUTDIR%\%1.%O% >>%OUTDIR%\link.sc
+set EXTRAS=
+if "%2" == "GUILE" set "EXTRAS=%GUILECFLAGS%"
+if exist "%OUTDIR%\%1.%O%" del "%OUTDIR%\%1.%O%"
+if "%COMPILER%" == "gcc" goto GccCompile
+
+:: MSVC Compile
+echo on
+%COMPILER% /nologo /MT /W4 /EHsc %OPTS% /I %OUTDIR%/src /I src /I %OUTDIR%/lib /I lib /I src/w32/include /D WINDOWS32 /D WIN32 /D _CONSOLE /D HAVE_CONFIG_H /FR%OUTDIR% /Fp%OUTDIR%\%MAKE%.pch /Fo%OUTDIR%\%1.%O% /Fd%OUTDIR%\%MAKE%.pdb %EXTRAS% /c %1.c
+@echo off
+goto CompileDone
+
+:GccCompile
+:: GCC Compile
+echo on
+%COMPILER% -mthreads -Wall -std=gnu99 -gdwarf-2 -g3 %OPTS% -I%OUTDIR%/src -I./src -I%OUTDIR%/lib -I./lib -I./src/w32/include -DWINDOWS32 -DHAVE_CONFIG_H %EXTRAS% -o %OUTDIR%\%1.%O% -c %1.c
+@echo off
+
+:CompileDone
+if not exist "%OUTDIR%\%1.%O%" exit 1
+goto :EOF
+
+:Link
+echo Linking %OUTDIR%/%MAKE%.exe
+if "%COMPILER%" == "gcc" goto GccLink
+
+:: MSVC Link
+echo %GUILELIBS% kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib >>%OUTDIR%\link.sc
+echo on
+link.exe /NOLOGO /SUBSYSTEM:console /PDB:%OUTDIR%\%MAKE%.pdb %LINKOPTS% /OUT:%OUTDIR%\%MAKE%.exe @%OUTDIR%\link.sc
+@echo off
+goto :EOF
+
+:GccLink
+:: GCC Link
+echo on
+echo %GUILELIBS% -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -luuid -lodbc32 -lodbccp32 >>%OUTDIR%\link.sc
+%COMPILER% -mthreads -gdwarf-2 -g3 %OPTS% -o %OUTDIR%\%MAKE%.exe @%OUTDIR%\link.sc -Wl,--out-implib=%OUTDIR%\libgnumake-1.dll.a
+@echo off
+goto :EOF
+
+:ConfigSCM
+echo Generating config from SCM templates
+sed -n "s/^AC_INIT(\[GNU make\],\[\([^]]\+\)\].*/s,%%VERSION%%,\1,g/p" configure.ac > %OUTDIR%\src\config.h.W32.sed
+echo s,%%PACKAGE%%,make,g >> %OUTDIR%\src\config.h.W32.sed
+sed -f %OUTDIR%\src\config.h.W32.sed src\config.h.W32.template > src\config.h.W32
+echo static const char *const GUILE_module_defn = ^" \ > src\gmk-default.h
+sed -e "s/;.*//" -e "/^[ \t]*$/d" -e "s/\"/\\\\\"/g" -e "s/$/ \\\/" src\gmk-default.scm >> src\gmk-default.h
+echo ^";>> src\gmk-default.h
+goto :EOF
+
+:ChkGuile
+:: Build with Guile is supported only on NT and later versions
+if not "%OS%" == "Windows_NT" goto NoGuile
+pkg-config --help > %OUTDIR%\guile.tmp 2> NUL
+if ERRORLEVEL 1 goto NoPkgCfg
+
+echo Checking for Guile 2.0
+if not "%COMPILER%" == "gcc" set PKGMSC=--msvc-syntax
+pkg-config --cflags --short-errors "guile-2.0" > %OUTDIR%\guile.tmp
+if not ERRORLEVEL 1 set /P GUILECFLAGS= < %OUTDIR%\guile.tmp
+
+pkg-config --libs --static --short-errors %PKGMSC% "guile-2.0" > %OUTDIR%\guile.tmp
+if not ERRORLEVEL 1 set /P GUILELIBS= < %OUTDIR%\guile.tmp
+
+if not "%GUILECFLAGS%" == "" goto GuileDone
+
+echo Checking for Guile 1.8
+pkg-config --cflags --short-errors "guile-1.8" > %OUTDIR%\guile.tmp
+if not ERRORLEVEL 1 set /P GUILECFLAGS= < %OUTDIR%\guile.tmp
+
+pkg-config --libs --static --short-errors %PKGMSC% "guile-1.8" > %OUTDIR%\guile.tmp
+if not ERRORLEVEL 1 set /P GUILELIBS= < %OUTDIR%\guile.tmp
+
+if not "%GUILECFLAGS%" == "" goto GuileDone
+
+echo - No Guile found, building without Guile
+goto GuileDone
+
+:NoPkgCfg
+echo - pkg-config not found, building without Guile
+
+:GuileDone
+if "%GUILECFLAGS%" == "" goto :EOF
+
+echo - Guile found: building with Guile
+set "GUILECFLAGS=%GUILECFLAGS% -DHAVE_GUILE"
+goto :EOF
+
+:FindVswhere
+set VSWHERE=vswhere
+%VSWHERE% -help >nul 2>&1
+if not ERRORLEVEL 1 exit /b 0
+set "VSWHERE=C:\Program Files (x86)\Microsoft Visual Studio\Installer\vswhere"
+%VSWHERE% -help >nul 2>&1
+if ERRORLEVEL 1 exit /b 1
+goto :EOF
+
+:CheckMSVC
+if not exist "%VSVARS%" exit /b 1
+call "%VSVARS%" %ARCH%
+if ERRORLEVEL 1 exit /b 1
+%COMPILER% >nul 2>&1
+if ERRORLEVEL 1 exit /b 1
+goto :EOF
+
+:Usage
+echo Usage: %0 [options] [gcc]
+echo Options:
+echo.  --without-guile   Do not compile Guile support even if found
+echo.  --debug           Make a Debug build--default is Release
+echo.  --x86             Make a 32bit binary--default is 64bit
+echo.  --help            Display these instructions and exit
+goto :EOF
+
+:Reset
+set ARCH=
+set COMPILER=
+set DEBUG=
+set GUILE=
+set GUILECFLAGS=
+set GUILELIBS=
+set LINKOPTS=
+set MAKE=
+set NOGUILE=
+set O=
+set OPTS=
+set OUTDIR=
+set PKGMSC=
+set VSVARS=
+goto :EOF

builddos.bat

@@ -0,0 +1,95 @@
+@echo off
+rem Copyright (C) 1998-2019 Free Software Foundation, Inc.
+rem This file is part of GNU Make.
+rem
+rem GNU Make is free software; you can redistribute it and/or modify it under
+rem the terms of the GNU General Public License as published by the Free
+rem Software Foundation; either version 3 of the License, or (at your option)
+rem any later version.
+rem
+rem GNU Make is distributed in the hope that it will be useful, but WITHOUT
+rem ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+rem FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for.
+rem more details.
+rem
+rem You should have received a copy of the GNU General Public License along
+rem with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+echo Building Make for MSDOS with DJGPP
+
+rem The SmallEnv trick protects against too small environment block,
+rem in which case the values will be truncated and the whole thing
+rem goes awry.  COMMAND.COM will say "Out of environment space", but
+rem many people don't care, so we force them to care by refusing to go.
+
+rem Where is the srcdir?
+set XSRC=.
+if not "%XSRC%"=="." goto SmallEnv
+if "%1%"=="" goto SrcDone
+if "%1%"=="." goto SrcDone
+set XSRC=%1
+
+if not "%XSRC%"=="%1" goto SmallEnv
+
+:SrcDone
+
+if not exist src mkdir src
+if not exist lib mkdir lib
+
+copy /Y %XSRC%\src\configh.dos .\src\config.h
+
+copy /Y %XSRC%\lib\glob.in.h .\lib\glob.h
+copy /Y %XSRC%\lib\fnmatch.in.h .\lib\fnmatch.h
+
+rem Echo ON so they will see what is going on.
+@echo on
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/commands.c -o commands.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/output.c -o output.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/job.c -o job.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/dir.c -o dir.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/file.c -o file.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/misc.c -o misc.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/main.c -o main.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -DINCLUDEDIR=\"c:/djgpp/include\" -O2 -g %XSRC%/src/read.c -o read.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -DLIBDIR=\"c:/djgpp/lib\" -O2 -g %XSRC%/src/remake.c -o remake.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/rule.c -o rule.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/implicit.c -o implicit.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/default.c -o default.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/variable.c -o variable.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/expand.c -o eyxpand.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/function.c -o function.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/vpath.c -o vpath.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/hash.c -o hash.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/strcache.c -o strcache.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/version.c -o version.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/ar.c -o ar.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/arscan.c -o arscan.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/signame.c -o signame.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/remote-stub.c -o remote-stub.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/getopt.c -o getopt.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/src/getopt1.c -o getopt1.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/lib/glob.c -o lib/glob.o
+gcc -c -I./src -I%XSRC%/src -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/lib/fnmatch.c -o lib/fnmatch.o
+@echo off
+echo commands.o > respf.$$$
+for %%f in (job output dir file misc main read remake rule implicit default variable) do echo %%f.o >> respf.$$$
+for %%f in (expand function vpath hash strcache version ar arscan signame remote-stub getopt getopt1) do echo %%f.o >> respf.$$$
+for %%f in (lib\glob lib\fnmatch) do echo %%f.o >> respf.$$$
+rem gcc  -c -I./src -I%XSRC% -I./lib -I%XSRC%/lib -DHAVE_CONFIG_H -O2 -g %XSRC%/guile.c -o guile.o
+rem echo guile.o >> respf.$$$
+@echo Linking...
+@echo on
+gcc -o make.exe @respf.$$$
+@echo off
+if not exist make.exe echo Make.exe build failed...
+if exist make.exe echo make.exe is now built!
+if exist make.exe del respf.$$$
+if exist make.exe copy /Y Basic.mk Makefile
+goto End
+
+:SmallEnv
+echo Your environment is too small.  Please enlarge it and run me again.
+
+:End
+set XRSC=
+@echo on

configure.ac

@@ -0,0 +1,545 @@
+# Process this file with autoconf to produce a configure script.
+#
+# Copyright (C) 1993-2019 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+AC_INIT([GNU make],[4.2.90],[bug-make@gnu.org])
+
+AC_PREREQ([2.69])
+
+# Autoconf setup
+AC_CONFIG_AUX_DIR([build-aux])
+AC_CONFIG_SRCDIR([src/vpath.c])
+AC_CONFIG_HEADERS([src/config.h])
+
+AC_CONFIG_LIBOBJ_DIR([lib])
+
+# Automake setup
+# We have to enable "foreign" because ChangeLog is auto-generated
+# Automake 1.15 and gnulib don't get along: gnulib has some strange error
+# in the way it handles getloadavg.c which causes make distcheck to fail.
+# http://lists.gnu.org/archive/html/bug-gnulib/2018-06/msg00024.html
+AM_INIT_AUTOMAKE([1.16.1 foreign -Werror -Wall])
+
+# Checks for programs.
+AC_USE_SYSTEM_EXTENSIONS
+AC_PROG_CC
+
+# Configure gnulib
+gl_EARLY
+gl_INIT
+
+AC_PROG_INSTALL
+AC_PROG_RANLIB
+AC_PROG_CPP
+AC_CHECK_PROG([AR], [ar], [ar], [ar])
+# Perl is needed for the test suite (only)
+AC_CHECK_PROG([PERL], [perl], [perl], [perl])
+
+# Specialized system macros
+AC_CANONICAL_HOST
+AC_AIX
+AC_ISC_POSIX
+AC_MINIX
+AC_C_BIGENDIAN
+
+# Enable gettext, in "external" mode.
+AM_GNU_GETTEXT_VERSION([0.19.4])
+AM_GNU_GETTEXT([external])
+
+# This test must come as early as possible after the compiler configuration
+# tests, because the choice of the file model can (in principle) affect
+# whether functions and headers are available, whether they work, etc.
+AC_SYS_LARGEFILE
+
+# Checks for libraries.
+AC_SEARCH_LIBS([getpwnam], [sun])
+
+# Checks for header files.
+AC_HEADER_STDC
+AC_HEADER_DIRENT
+AC_HEADER_STAT
+AC_HEADER_TIME
+AC_CHECK_HEADERS([stdlib.h locale.h unistd.h limits.h fcntl.h string.h \
+                  memory.h sys/param.h sys/resource.h sys/time.h sys/timeb.h \
+                  sys/select.h sys/file.h spawn.h])
+
+AM_PROG_CC_C_O
+AC_C_CONST
+AC_TYPE_SIGNAL
+AC_TYPE_UID_T
+AC_TYPE_PID_T
+AC_TYPE_OFF_T
+AC_TYPE_SIZE_T
+AC_TYPE_SSIZE_T
+AC_TYPE_UINTMAX_T
+
+# Find out whether our struct stat returns nanosecond resolution timestamps.
+
+AC_STRUCT_ST_MTIM_NSEC
+AC_CACHE_CHECK([whether to use high resolution file timestamps],
+               [make_cv_file_timestamp_hi_res],
+[ make_cv_file_timestamp_hi_res=no
+  AS_IF([test "$ac_cv_struct_st_mtim_nsec" != no],
+        [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif]],
+                      [[char a[0x7fffffff < (uintmax_t)-1 >> 30 ? 1 : -1];]])],
+        [make_cv_file_timestamp_hi_res=yes])
+  ])])
+AS_IF([test "$make_cv_file_timestamp_hi_res" = yes], [val=1], [val=0])
+AC_DEFINE_UNQUOTED([FILE_TIMESTAMP_HI_RES], [$val],
+                   [Use high resolution file timestamps if nonzero.])
+
+AS_IF([test "$make_cv_file_timestamp_hi_res" = yes],
+[ # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
+  # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
+  AC_SEARCH_LIBS([clock_gettime], [rt posix4])
+  AS_IF([test "$ac_cv_search_clock_gettime" != no],
+  [ AC_DEFINE([HAVE_CLOCK_GETTIME], [1],
+              [Define to 1 if you have the clock_gettime function.])
+  ])
+])
+
+# Check for DOS-style pathnames.
+pds_AC_DOS_PATHS
+
+# See if we have a standard version of gettimeofday().  Since actual
+# implementations can differ, just make sure we have the most common
+# one.
+AC_CACHE_CHECK([for standard gettimeofday], [ac_cv_func_gettimeofday],
+  [ac_cv_func_gettimeofday=no
+   AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <sys/time.h>
+                  int main ()
+                  {
+                    struct timeval t; t.tv_sec = -1; t.tv_usec = -1;
+                    exit (gettimeofday (&t, 0) != 0
+                          || t.tv_sec < 0 || t.tv_usec < 0);
+                  }]])],
+                  [ac_cv_func_gettimeofday=yes],
+                  [ac_cv_func_gettimeofday=no],
+                  [ac_cv_func_gettimeofday="no (cross-compiling)"])])
+AS_IF([test "$ac_cv_func_gettimeofday" = yes],
+[ AC_DEFINE([HAVE_GETTIMEOFDAY], [1],
+            [Define to 1 if you have a standard gettimeofday function])
+])
+
+AC_CHECK_FUNCS([strdup strndup umask mkstemp mktemp fdopen \
+                dup dup2 getcwd realpath sigsetmask sigaction \
+                getgroups seteuid setegid setlinebuf setreuid setregid \
+                getrlimit setrlimit setvbuf pipe strsignal \
+                lstat readlink atexit isatty ttyname pselect posix_spawn \
+                posix_spawnattr_setsigmask])
+
+# We need to check declarations, not just existence, because on Tru64 this
+# function is not declared without special flags, which themselves cause
+# other problems.  We'll just use our own.
+AC_CHECK_DECLS([bsd_signal], [], [], [[#define _GNU_SOURCE 1
+#include <signal.h>]])
+
+AC_FUNC_FORK
+
+AC_FUNC_SETVBUF_REVERSED
+
+# Rumor has it that strcasecmp lives in -lresolv on some odd systems.
+# It doesn't hurt much to use our own if we can't find it so I don't
+# make the effort here.
+AC_CHECK_FUNCS([strcasecmp strncasecmp strcmpi strncmpi stricmp strnicmp])
+
+# strcoll() is used by the GNU glob library
+AC_FUNC_STRCOLL
+AC_FUNC_CLOSEDIR_VOID
+
+# See if the user wants to add (or not) GNU Guile support
+AC_ARG_WITH([guile], [AS_HELP_STRING([--with-guile],
+            [Support GNU Guile for embedded scripting])])
+
+# Annoyingly, each version of Guile comes with it's own PC file so we have to
+# specify them as individual packages.  Ugh.
+PKG_PROG_PKG_CONFIG
+
+AS_IF([test "x$with_guile" != xno],
+[ guile_versions="2.2 2.0 1.8"
+  guile_version=no
+  have_guile=no
+  AC_MSG_CHECKING([for GNU Guile])
+  for v in $guile_versions; do
+    PKG_CHECK_EXISTS([guile-$v], [guile_version=$v; have_guile=yes; break], [])
+  done
+  AC_MSG_RESULT([$guile_version])
+  if test "$have_guile" = yes; then
+    PKG_CHECK_MODULES(GUILE, [guile-$guile_version])
+    AC_DEFINE([HAVE_GUILE], [1], [Embed GNU Guile support])
+  fi
+])
+
+AM_CONDITIONAL([HAVE_GUILE], [test "$have_guile" = yes])
+
+AC_CHECK_DECLS([sys_siglist, _sys_siglist, __sys_siglist], , ,
+  [AC_INCLUDES_DEFAULT
+#include <signal.h>
+/* NetBSD declares sys_siglist in unistd.h.  */
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+])
+
+
+# Check out the wait reality.
+AC_CHECK_HEADERS([sys/wait.h],[],[],[[#include <sys/types.h>]])
+AC_CHECK_FUNCS([waitpid wait3])
+AC_CACHE_CHECK([for union wait], [make_cv_union_wait],
+[ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+#include <sys/wait.h>]],
+     [[union wait status; int pid; pid = wait (&status);
+#ifdef WEXITSTATUS
+/* Some POSIXoid systems have both the new-style macros and the old
+   union wait type, and they do not work together.  If union wait
+   conflicts with WEXITSTATUS et al, we don't want to use it at all.  */
+        if (WEXITSTATUS (status) != 0) pid = -1;
+#ifdef WTERMSIG
+        /* If we have WEXITSTATUS and WTERMSIG, just use them on ints.  */
+        -- blow chunks here --
+#endif
+#endif
+#ifdef HAVE_WAITPID
+        /* Make sure union wait works with waitpid.  */
+        pid = waitpid (-1, &status, 0);
+#endif
+      ]])],
+    [make_cv_union_wait=yes],
+    [make_cv_union_wait=no])
+])
+AS_IF([test "$make_cv_union_wait" = yes],
+[ AC_DEFINE([HAVE_UNION_WAIT], [1],
+            [Define to 1 if you have the 'union wait' type in <sys/wait.h>.])
+])
+
+
+# If we're building on Windows/DOS/OS/2, add some support for DOS drive specs.
+AS_IF([test "$PATH_SEPARATOR" = ';'],
+[ AC_DEFINE([HAVE_DOS_PATHS], [1],
+            [Define to 1 if your system requires backslashes or drive specs in pathnames.])
+])
+
+# See if the user wants to use pmake's "customs" distributed build capability
+AC_SUBST([REMOTE]) REMOTE=stub
+use_customs=false
+AC_ARG_WITH([customs],
+[AC_HELP_STRING([--with-customs=DIR],
+                [enable remote jobs via Customs--see README.customs])],
+[ AS_CASE([$withval], [n|no], [:],
+    [make_cppflags="$CPPFLAGS"
+     AS_CASE([$withval],
+             [y|ye|yes], [:],
+             [CPPFLAGS="$CPPFLAGS -I$with_customs/include/customs"
+              make_ldflags="$LDFLAGS -L$with_customs/lib"])
+     CF_NETLIBS
+     AC_CHECK_HEADER([customs.h],
+                     [use_customs=true
+                      REMOTE=cstms
+                      LIBS="$LIBS -lcustoms" LDFLAGS="$make_ldflags"],
+                     [with_customs=no
+                      CPPFLAGS="$make_cppflags" make_badcust=yes])
+    ])
+])
+
+# Tell automake about this, so it can include the right .c files.
+AM_CONDITIONAL([USE_CUSTOMS], [test "$use_customs" = true])
+
+# See if the user asked to handle case insensitive file systems.
+AH_TEMPLATE([HAVE_CASE_INSENSITIVE_FS], [Use case insensitive file names])
+AC_ARG_ENABLE([case-insensitive-file-system],
+  AC_HELP_STRING([--enable-case-insensitive-file-system],
+                 [assume file systems are case insensitive]),
+  [AS_IF([test "$enableval" = yes], [AC_DEFINE([HAVE_CASE_INSENSITIVE_FS])])])
+
+# See if we can handle the job server feature, and if the user wants it.
+AC_ARG_ENABLE([job-server],
+  AC_HELP_STRING([--disable-job-server],
+                 [disallow recursive make communication during -jN]),
+  [make_cv_job_server="$enableval" user_job_server="$enableval"],
+  [make_cv_job_server="yes"])
+
+AS_IF([test "$ac_cv_func_waitpid" = no && test "$ac_cv_func_wait3" = no],
+      [has_wait_nohang=no],
+      [has_wait_nohang=yes])
+
+AC_CACHE_CHECK([for SA_RESTART], [make_cv_sa_restart], [
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]],
+      [[return SA_RESTART;]])],
+    [make_cv_sa_restart=yes],
+    [make_cv_sa_restart=no])])
+
+AS_IF([test "$make_cv_sa_restart" != no],
+[ AC_DEFINE([HAVE_SA_RESTART], [1],
+     [Define to 1 if <signal.h> defines the SA_RESTART constant.])
+])
+
+# Only allow jobserver on systems that support it
+AS_CASE([/$ac_cv_func_pipe/$ac_cv_func_sigaction/$make_cv_sa_restart/$has_wait_nohang/],
+  [*/no/*], [make_cv_job_server=no])
+
+# Also supported on OS2 and MinGW
+AS_CASE([$host_os], [os2*|mingw*], [make_cv_job_server=yes])
+
+# If we support it and the user didn't disable it, build with jobserver
+AS_CASE([/$make_cv_job_server/$user_job_server/],
+  [*/no/*], [: no jobserver],
+  [AC_DEFINE(MAKE_JOBSERVER, 1,
+             [Define to 1 to enable job server support in GNU make.])
+  ])
+
+# If dl*() functions are supported we can enable the load operation
+AC_CHECK_DECLS([dlopen, dlsym, dlerror], [], [],
+  [[#include <dlfcn.h>]])
+
+AC_ARG_ENABLE([load],
+  AC_HELP_STRING([--disable-load],
+                 [disable support for the 'load' operation]),
+  [make_cv_load="$enableval" user_load="$enableval"],
+  [make_cv_load="yes"])
+
+AS_CASE([/$ac_cv_have_decl_dlopen/$ac_cv_have_decl_dlsym/$ac_cv_have_decl_dlerror/],
+  [*/no/*], [make_cv_load=no])
+
+# We might need -ldl
+AS_IF([test "$make_cv_load" = yes], [
+  AC_SEARCH_LIBS([dlopen], [dl], [], [make_cv_load=])
+  ])
+
+AS_CASE([/$make_cv_load/$user_load/],
+  [*/no/*], [make_cv_load=no],
+  [AC_DEFINE(MAKE_LOAD, 1,
+             [Define to 1 to enable 'load' support in GNU make.])
+  ])
+
+# If we want load support, we might need to link with export-dynamic.
+# See if we can figure it out.  Unfortunately this is very difficult.
+# For example passing -rdynamic to the SunPRO linker gives a warning
+# but succeeds and creates a shared object, not an executable!
+AS_IF([test "$make_cv_load" = yes], [
+  AC_MSG_CHECKING([If the linker accepts -Wl,--export-dynamic])
+  old_LDFLAGS="$LDFLAGS"
+  LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
+  AC_LINK_IFELSE([AC_LANG_SOURCE([int main(){}])],
+    [AC_MSG_RESULT([yes])
+     AC_SUBST([AM_LDFLAGS], [-Wl,--export-dynamic])],
+    [AC_MSG_RESULT([no])
+     AC_MSG_CHECKING([If the linker accepts -rdynamic])
+     LDFLAGS="$old_LDFLAGS -rdynamic"
+     AC_LINK_IFELSE([AC_LANG_SOURCE([int main(){}])],
+       [AC_MSG_RESULT([yes])
+        AC_SUBST([AM_LDFLAGS], [-rdynamic])],
+       [AC_MSG_RESULT([no])])
+   ])
+  LDFLAGS="$old_LDFLAGS"
+])
+
+# if we have both lstat() and readlink() then we can support symlink
+# timechecks.
+AS_IF([test "$ac_cv_func_lstat" = yes && test "$ac_cv_func_readlink" = yes],
+  [ AC_DEFINE([MAKE_SYMLINKS], [1],
+              [Define to 1 to enable symbolic link timestamp checking.])
+])
+
+# Use posix_spawn if we have support and the user didn't disable it
+
+AC_ARG_ENABLE([posix-spawn],
+  AC_HELP_STRING([--disable-posix-spawn],
+                 [disable support for posix_spawn()]),
+  [make_cv_posix_spawn="$enableval" user_posix_spawn="$enableval"],
+  [make_cv_posix_spawn="yes"])
+
+AS_CASE([/$ac_cv_header_spawn/$ac_cv_func_posix_spawn/],
+  [*/no/*], [make_cv_posix_spawn=no])
+
+AS_CASE([/$make_cv_posix_spawn/$user_posix_spawn/],
+  [*/no/*], [make_cv_posix_spawn=no],
+  [AC_DEFINE(USE_POSIX_SPAWN, 1, [Define to 1 to use posix_spawn().])
+  ])
+
+# Find the SCCS commands, so we can include them in our default rules.
+
+AC_CACHE_CHECK([for location of SCCS get command], [make_cv_path_sccs_get], [
+  AS_IF([test -f /usr/sccs/get],
+        [make_cv_path_sccs_get=/usr/sccs/get],
+        [make_cv_path_sccs_get=get])
+])
+AC_DEFINE_UNQUOTED([SCCS_GET], ["$make_cv_path_sccs_get"],
+                   [Define to the name of the SCCS 'get' command.])
+
+ac_clean_files="$ac_clean_files s.conftest conftoast" # Remove these later.
+AS_IF([(/usr/sccs/admin -n s.conftest || admin -n s.conftest) >/dev/null 2>&1 &&
+   test -f s.conftest],
+[ # We successfully created an SCCS file.
+  AC_CACHE_CHECK([if SCCS get command understands -G], [make_cv_sys_get_minus_G],
+    [AS_IF([$make_cv_path_sccs_get -Gconftoast s.conftest >/dev/null 2>&1 &&
+            test -f conftoast],
+           [make_cv_sys_get_minus_G=yes],
+           [make_cv_sys_get_minus_G=no])
+    ])
+  AS_IF([test "$make_cv_sys_get_minus_G" = yes],
+    [AC_DEFINE([SCCS_GET_MINUS_G], [1],
+     [Define to 1 if the SCCS 'get' command understands the '-G<file>' option.])
+    ])
+])
+rm -f s.conftest conftoast
+
+# Check the system to see if it provides GNU glob.  If not, use our
+# local version.
+AC_CACHE_CHECK([if system libc has GNU glob], [make_cv_sys_gnu_glob],
+[ AC_EGREP_CPP([gnu glob],[
+#include <features.h>
+#include <glob.h>
+#include <fnmatch.h>
+
+#if !defined _LIBC && defined __GNU_LIBRARY__ && __GNU_LIBRARY__ > 1
+# include <gnu-versions.h>
+# if _GNU_GLOB_INTERFACE_VERSION == 1 || _GNU_GLOB_INTERFACE_VERSION == 2
+   gnu glob
+# endif
+#endif],
+        [make_cv_sys_gnu_glob=yes],
+        [make_cv_sys_gnu_glob=no])])
+
+# Tell automake about this, so it can build the right .c files.
+AM_CONDITIONAL([USE_SYSTEM_GLOB], [test "$make_cv_sys_gnu_glob" = yes])
+
+# Tell build.sh which to use
+USE_SYSTEM_GLOB="$make_cv_sys_gnu_glob"
+AC_SUBST([USE_SYSTEM_GLOB])
+
+# See if we need a replacement for getloadavg()
+gl_GETLOADAVG
+if test $HAVE_GETLOADAVG = 0; then
+  AC_LIBOBJ([getloadavg])
+  gl_PREREQ_GETLOADAVG
+fi
+gl_STDLIB_MODULE_INDICATOR([getloadavg])
+
+# Let the makefile know what our build host is
+
+AC_DEFINE_UNQUOTED([MAKE_HOST],["$host"],[Build host information.])
+MAKE_HOST="$host"
+AC_SUBST([MAKE_HOST])
+
+w32_target_env=no
+AM_CONDITIONAL([WINDOWSENV], [false])
+
+AS_CASE([$host],
+  [*-*-mingw32],
+   [AM_CONDITIONAL([WINDOWSENV], [true])
+    w32_target_env=yes
+    AC_DEFINE([WINDOWS32], [1], [Use platform specific coding])
+    AC_DEFINE([HAVE_DOS_PATHS], [1], [Use platform specific coding])
+  ])
+
+AC_DEFINE_UNQUOTED([PATH_SEPARATOR_CHAR],['$PATH_SEPARATOR'],
+        [Define to the character that separates directories in PATH.])
+
+# Include the Maintainer's Makefile section, if it's here.
+
+MAINT_MAKEFILE=/dev/null
+AS_IF([test -r "$srcdir/maintMakefile"],
+[ MAINT_MAKEFILE="$srcdir/maintMakefile"
+])
+AC_SUBST_FILE([MAINT_MAKEFILE])
+
+# Allow building with dmalloc
+AM_WITH_DMALLOC
+
+# Forcibly disable SET_MAKE.  If it's set it breaks things like the test
+# scripts, etc.
+SET_MAKE=
+
+# Sanity check and inform the user of what we found
+
+AS_IF([test "x$make_badcust" = xyes], [
+echo
+echo "WARNING: --with-customs specified but no customs.h could be found;"
+echo "         disabling Customs support."
+echo
+])
+
+AS_CASE([$with_customs],
+[""|n|no|y|ye|yes], [:],
+[AS_IF([test -f "$with_customs/lib/libcustoms.a"], [:],
+[ echo
+  echo "WARNING: '$with_customs/lib' does not appear to contain the"
+  echo "         Customs library.  You must build and install Customs"
+  echo "         before compiling GNU make."
+  echo
+])])
+
+AS_IF([test "x$has_wait_nohang" = xno],
+[ echo
+  echo "WARNING: Your system has neither waitpid() nor wait3()."
+  echo "         Without one of these, signal handling is unreliable."
+  echo "         You should be aware that running GNU make with -j"
+  echo "         could result in erratic behavior."
+  echo
+])
+
+AS_IF([test "x$make_cv_job_server" = xno && test "x$user_job_server" = xyes],
+[ echo
+  echo "WARNING: Make job server requires a POSIX-ish system that"
+  echo "         supports the pipe(), sigaction(), and either"
+  echo "         waitpid() or wait3() functions.  Your system doesn't"
+  echo "         appear to provide one or more of those."
+  echo "         Disabling job server support."
+  echo
+])
+
+AS_IF([test "x$make_cv_load" = xno && test "x$user_load" = xyes],
+[ echo
+  echo "WARNING: 'load' support requires a POSIX-ish system that"
+  echo "         supports the dlopen(), dlsym(), and dlerror() functions."
+  echo "         Your system doesn't appear to provide one or more of these."
+  echo "         Disabling 'load' support."
+  echo
+])
+
+AS_IF([test "x$make_cv_posix_spawn" = xno && test "x$user_posix_spawn" = xyes],
+[ echo
+  echo "WARNING: posix_spawn() is not supported on this system."
+  echo
+])
+
+# Specify what files are to be created.
+AC_CONFIG_FILES([Makefile lib/Makefile po/Makefile.in doc/Makefile \
+                 tests/config-flags.pm])
+# We don't need this: the standard automake output suffices for POSIX systems.
+#mk/Posix.mk
+
+# OK, do it!
+
+AC_OUTPUT
+
+# We only generate the build.sh if we have a build.sh.in; we won't have
+# one before we've created a distribution.
+AS_IF([test -f "$srcdir/build.sh.in"],
+[ ./config.status --file build.sh
+  chmod +x build.sh
+])
+
+dnl Local Variables:
+dnl comment-start: "dnl "
+dnl comment-end: ""
+dnl comment-start-skip: "\\bdnl\\b\\s *"
+dnl compile-command: "make configure config.h.in"
+dnl End:

doc/.gitignore

@@ -0,0 +1,23 @@
+manual/
+make.t2p/
+gendocs_template
+fdl.texi
+make-stds.texi
+stamp-vti
+version.texi
+make.info*
+make*.html
+make.aux
+make.cp
+make.cps
+make.dvi
+make.fn
+make.fns
+make.ky
+make.log
+make.pdf
+make.pg
+make.ps
+make.toc
+make.tp
+make.vr

doc/Makefile.am

@@ -0,0 +1,24 @@
+# -*-Makefile-*-, or close enough
+# Copyright (C) 2000-2019 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+TEXI2HTML = texi2html
+TEXI2HTML_FLAGS = -split_chapter
+
+info_TEXINFOS =	make.texi
+make_TEXINFOS = fdl.texi make-stds.texi
+
+CLEANFILES = make*.html

doc/make.1

@@ -0,0 +1,379 @@
+.TH MAKE 1 "28 February 2016" "GNU" "User Commands"
+.SH NAME
+make \- GNU make utility to maintain groups of programs
+.SH SYNOPSIS
+.B make
+[\fIOPTION\fR]... [\fITARGET\fR]...
+.SH DESCRIPTION
+.LP
+The
+.I make
+utility will determine automatically which pieces of a large program need to
+be recompiled, and issue the commands to recompile them.  The manual describes
+the GNU implementation of
+.BR make ,
+which was written by Richard Stallman and Roland McGrath, and is currently
+maintained by Paul Smith.  Our examples show C programs, since they are very
+common, but you can use
+.B make
+with any programming language whose compiler can be run with a shell command.
+In fact,
+.B make
+is not limited to programs.  You can use it to describe any task where some
+files must be updated automatically from others whenever the others change.
+.LP
+To prepare to use
+.BR make ,
+you must write a file called the
+.I makefile
+that describes the relationships among files in your program, and the states
+the commands for updating each file.  In a program, typically the executable
+file is updated from object files, which are in turn made by compiling source
+files.
+.LP
+Once a suitable makefile exists, each time you change some source files,
+this simple shell command:
+.sp 1
+.RS
+.B make
+.RE
+.sp 1
+suffices to perform all necessary recompilations.
+The
+.B make
+program uses the makefile description and the last-modification times of the
+files to decide which of the files need to be updated.  For each of those
+files, it issues the commands recorded in the makefile.
+.LP
+.B make
+executes commands in the
+.I makefile
+to update one or more target
+.IR names ,
+where
+.I name
+is typically a program.
+If no
+.B \-f
+option is present,
+.B make
+will look for the makefiles
+.IR GNUmakefile ,
+.IR makefile ,
+and
+.IR Makefile ,
+in that order.
+.LP
+Normally you should call your makefile either
+.I makefile
+or
+.IR Makefile .
+(We recommend
+.I Makefile
+because it appears prominently near the beginning of a directory
+listing, right near other important files such as
+.IR  README .)
+The first name checked,
+.IR GNUmakefile ,
+is not recommended for most makefiles.  You should use this name if you have a
+makefile that is specific to GNU
+.BR make ,
+and will not be understood by other versions of
+.BR make .
+If
+.I makefile
+is '\-', the standard input is read.
+.LP
+.B make
+updates a target if it depends on prerequisite files
+that have been modified since the target was last modified,
+or if the target does not exist.
+.SH OPTIONS
+.sp 1
+.TP 0.5i
+\fB\-b\fR, \fB\-m\fR
+These options are ignored for compatibility with other versions of
+.BR make .
+.TP 0.5i
+\fB\-B\fR, \fB\-\-always\-make\fR
+Unconditionally make all targets.
+.TP 0.5i
+\fB\-C\fR \fIdir\fR, \fB\-\-directory\fR=\fIdir\fR
+Change to directory
+.I dir
+before reading the makefiles or doing anything else.
+If multiple
+.B \-C
+options are specified, each is interpreted relative to the
+previous one:
+.BR "\-C " /
+.BR "\-C " etc
+is equivalent to
+.BR "\-C " /etc.
+This is typically used with recursive invocations of
+.BR make .
+.TP 0.5i
+.B \-d
+Print debugging information in addition to normal processing.
+The debugging information says which files are being considered for
+remaking, which file-times are being compared and with what results,
+which files actually need to be remade, which implicit rules are
+considered and which are applied---everything interesting about how
+.B make
+decides what to do.
+.TP 0.5i
+.BI \-\-debug "[=FLAGS]"
+Print debugging information in addition to normal processing.
+If the
+.I FLAGS
+are omitted, then the behavior is the same as if
+.B \-d
+was specified.
+.I FLAGS
+may be
+.I a
+for all debugging output (same as using
+.BR \-d ),
+.I b
+for basic debugging,
+.I v
+for more verbose basic debugging,
+.I i
+for showing implicit rules,
+.I j
+for details on invocation of commands, and
+.I m
+for debugging while remaking makefiles.  Use
+.I n
+to disable all previous debugging flags.
+.TP 0.5i
+\fB\-e\fR, \fB\-\-environment\-overrides\fR
+Give variables taken from the environment precedence over variables
+from makefiles.
+.TP 0.5i
+\fB\-E\fR \fIstring\fR, \fB\-\-eval\fR \fIstring\fR
+Interpret \fIstring\fR using the \fBeval\fR function, before parsing any
+makefiles.
+.TP 0.5i
+\fB\-f\fR \fIfile\fR, \fB\-\-file\fR=\fIfile\fR, \fB\-\-makefile\fR=\fIFILE\fR
+Use
+.I file
+as a makefile.
+.TP 0.5i
+\fB\-i\fR, \fB\-\-ignore\-errors\fR
+Ignore all errors in commands executed to remake files.
+.TP 0.5i
+\fB\-I\fR \fIdir\fR, \fB\-\-include\-dir\fR=\fIdir\fR
+Specifies a directory
+.I dir
+to search for included makefiles.
+If several
+.B \-I
+options are used to specify several directories, the directories are
+searched in the order specified.
+Unlike the arguments to other flags of
+.BR make ,
+directories given with
+.B \-I
+flags may come directly after the flag:
+.BI \-I dir
+is allowed, as well as
+.B \-I
+.IR dir .
+This syntax is allowed for compatibility with the C
+preprocessor's
+.B \-I
+flag.
+.TP 0.5i
+\fB\-j\fR [\fIjobs\fR], \fB\-\-jobs\fR[=\fIjobs\fR]
+Specifies the number of
+.I jobs
+(commands) to run simultaneously.
+If there is more than one
+.B \-j
+option, the last one is effective.
+If the
+.B \-j
+option is given without an argument,
+.BR make
+will not limit the number of jobs that can run simultaneously.
+.TP 0.5i
+\fB\-k\fR, \fB\-\-keep\-going\fR
+Continue as much as possible after an error.
+While the target that failed, and those that depend on it, cannot
+be remade, the other dependencies of these targets can be processed
+all the same.
+.TP 0.5i
+\fB\-l\fR [\fIload\fR], \fB\-\-load\-average\fR[=\fIload\fR]
+Specifies that no new jobs (commands) should be started if there are
+others jobs running and the load average is at least
+.I load
+(a floating-point number).
+With no argument, removes a previous load limit.
+.TP 0.5i
+\fB\-L\fR, \fB\-\-check\-symlink\-times\fR
+Use the latest mtime between symlinks and target.
+.TP 0.5i
+\fB\-n\fR, \fB\-\-just\-print\fR, \fB\-\-dry\-run\fR, \fB\-\-recon\fR
+Print the commands that would be executed, but do not execute them (except in
+certain circumstances).
+.TP 0.5i
+\fB\-o\fR \fIfile\fR, \fB\-\-old\-file\fR=\fIfile\fR, \fB\-\-assume\-old\fR=\fIfile\fR
+Do not remake the file
+.I file
+even if it is older than its dependencies, and do not remake anything
+on account of changes in
+.IR file .
+Essentially the file is treated as very old and its rules are ignored.
+.TP 0.5i
+\fB\-O\fR[\fItype\fR], \fB\-\-output\-sync\fR[=\fItype\fR]
+When running multiple jobs in parallel with \fB-j\fR, ensure the output of
+each job is collected together rather than interspersed with output from
+other jobs.  If
+.I type
+is not specified or is
+.B target
+the output from the entire recipe for each target is grouped together.  If
+.I type
+is
+.B line
+the output from each command line within a recipe is grouped together.
+If
+.I type
+is
+.B recurse
+output from an entire recursive make is grouped together.  If
+.I type
+is
+.B none
+output synchronization is disabled.
+.TP 0.5i
+\fB\-p\fR, \fB\-\-print\-data\-base\fR
+Print the data base (rules and variable values) that results from
+reading the makefiles; then execute as usual or as otherwise
+specified.
+This also prints the version information given by the
+.B \-v
+switch (see below).
+To print the data base without trying to remake any files, use
+.IR "make \-p \-f/dev/null" .
+.TP 0.5i
+\fB\-q\fR, \fB\-\-question\fR
+``Question mode''.
+Do not run any commands, or print anything; just return an exit status
+that is zero if the specified targets are already up to date, nonzero
+otherwise.
+.TP 0.5i
+\fB\-r\fR, \fB\-\-no\-builtin\-rules\fR
+Eliminate use of the built\-in implicit rules.
+Also clear out the default list of suffixes for suffix rules.
+.TP 0.5i
+\fB\-R\fR, \fB\-\-no\-builtin\-variables\fR
+Don't define any built\-in variables.
+.TP 0.5i
+\fB\-s\fR, \fB\-\-silent\fR, \fB\-\-quiet\fR
+Silent operation; do not print the commands as they are executed.
+.TP 0.5i
+.B \-\-no\-silent
+Cancel the effect of the \fB\-s\fR option.
+.TP 0.5i
+\fB\-S\fR, \fB\-\-no\-keep\-going\fR, \fB\-\-stop\fR
+Cancel the effect of the
+.B \-k
+option.
+.TP 0.5i
+\fB\-t\fR, \fB\-\-touch\fR
+Touch files (mark them up to date without really changing them)
+instead of running their commands.
+This is used to pretend that the commands were done, in order to fool
+future invocations of
+.BR make .
+.TP 0.5i
+.B \-\-trace
+Information about the disposition of each target is printed (why the target is
+being rebuilt and what commands are run to rebuild it).
+.TP 0.5i
+\fB\-v\fR, \fB\-\-version\fR
+Print the version of the
+.B make
+program plus a copyright, a list of authors and a notice that there
+is no warranty.
+.TP 0.5i
+\fB\-w\fR, \fB\-\-print\-directory\fR
+Print a message containing the working directory
+before and after other processing.
+This may be useful for tracking down errors from complicated nests of
+recursive
+.B make
+commands.
+.TP 0.5i
+.B \-\-no\-print\-directory
+Turn off
+.BR \-w ,
+even if it was turned on implicitly.
+.TP 0.5i
+\fB\-W\fR \fIfile\fR, \fB\-\-what\-if\fR=\fIfile\fR, \fB\-\-new\-file\fR=\fIfile\fR, \fB\-\-assume\-new\fR=\fIfile\fR
+Pretend that the target
+.I file
+has just been modified.
+When used with the
+.B \-n
+flag, this shows you what would happen if you were to modify that file.
+Without
+.BR \-n ,
+it is almost the same as running a
+.I touch
+command on the given file before running
+.BR make ,
+except that the modification time is changed only in the imagination of
+.BR make .
+.TP 0.5i
+.B \-\-warn\-undefined\-variables
+Warn when an undefined variable is referenced.
+.SH "EXIT STATUS"
+GNU
+.B make
+exits with a status of zero if all makefiles were successfully parsed
+and no targets that were built failed.  A status of one will be returned
+if the
+.B \-q
+flag was used and
+.B make
+determines that a target needs to be rebuilt.  A status of two will be
+returned if any errors were encountered.
+.SH "SEE ALSO"
+The full documentation for
+.B make
+is maintained as a Texinfo manual.  If the
+.B info
+and
+.B make
+programs are properly installed at your site, the command
+.IP
+.B info make
+.PP
+should give you access to the complete manual.
+.SH BUGS
+See the chapter ``Problems and Bugs'' in
+.IR "The GNU Make Manual" .
+.SH AUTHOR
+This manual page contributed by Dennis Morse of Stanford University.
+Further updates contributed by Mike Frysinger.  It has been reworked by Roland
+McGrath.  Maintained by Paul Smith.
+.SH "COPYRIGHT"
+Copyright \(co 1992-1993, 1996-2019 Free Software Foundation, Inc.
+This file is part of
+.IR "GNU make" .
+.LP
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+.LP
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+.LP
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see
+.IR http://www.gnu.org/licenses/ .

gl/modules/make-glob

@@ -0,0 +1,44 @@
+Description:
+GNU make version of fnmatch()/glob() functions.  This is a holdover from
+a very old version of the globbing library.
+
+Makefile.am:
+if !USE_SYSTEM_GLOB
+libgnu_a_SOURCES += fnmatch.c
+
+BUILT_SOURCES += fnmatch.h
+
+fnmatch.h: fnmatch.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  cat $(srcdir)/fnmatch.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+
+MOSTLYCLEANFILES += fnmatch.h fnmatch.h-t
+
+libgnu_a_SOURCES += glob.c
+
+BUILT_SOURCES += glob.h
+
+glob.h: glob.in.h $(top_builddir)/config.status
+	$(AM_V_GEN)rm -f $@-t $@ && \
+	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+	  cat $(srcdir)/glob.in.h; \
+	} > $@-t && \
+	mv -f $@-t $@
+
+MOSTLYCLEANFILES += glob.h glob.h-t
+endif
+
+EXTRA_DIST += fnmatch.in.h glob.in.h
+
+
+Include:
+<glob.h>
+
+License:
+LGPLv2+
+
+Maintainer:
+all, glibc

lib/.gitignore

@@ -0,0 +1,11 @@
+*
+!/.gitignore
+
+!/fnmatch.c
+!/fnmatch.in.h
+/fnmatch.h
+
+!/glob.c
+!/glob.in.h
+/glob.h
+

lib/fnmatch.c

@@ -0,0 +1,489 @@
+/* Copyright (C) 1991, 1992, 1993, 1996, 1997, 1998, 1999 Free Software
+Foundation, Inc.
+This file is part of the GNU C Library.
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with this library; see the file COPYING.LIB.  If not, write to the Free
+Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA.  */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+/* Enable GNU extensions in fnmatch.h.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE	1
+#endif
+
+#include <errno.h>
+#include <fnmatch.h>
+#include <ctype.h>
+
+#if HAVE_STRING_H || defined _LIBC
+# include <string.h>
+#else
+# include <strings.h>
+#endif
+
+#if defined STDC_HEADERS || defined _LIBC
+# include <stdlib.h>
+#endif
+
+/* For platform which support the ISO C amendement 1 functionality we
+   support user defined character classes.  */
+#if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
+/* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>.  */
+# include <wchar.h>
+# include <wctype.h>
+#endif
+
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself.  This code is part of the GNU C
+   Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand `configure --with-gnu-libc' and omit the object files,
+   it is simpler to just do this in the source for each such file.  */
+
+#if defined _LIBC || !defined __GNU_LIBRARY__
+
+
+# if defined STDC_HEADERS || !defined isascii
+#  define ISASCII(c) 1
+# else
+#  define ISASCII(c) isascii(c)
+# endif
+
+# ifdef isblank
+#  define ISBLANK(c) (ISASCII (c) && isblank (c))
+# else
+#  define ISBLANK(c) ((c) == ' ' || (c) == '\t')
+# endif
+# ifdef isgraph
+#  define ISGRAPH(c) (ISASCII (c) && isgraph (c))
+# else
+#  define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c))
+# endif
+
+# define ISPRINT(c) (ISASCII (c) && isprint (c))
+# define ISDIGIT(c) (ISASCII (c) && isdigit (c))
+# define ISALNUM(c) (ISASCII (c) && isalnum (c))
+# define ISALPHA(c) (ISASCII (c) && isalpha (c))
+# define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
+# define ISLOWER(c) (ISASCII (c) && islower (c))
+# define ISPUNCT(c) (ISASCII (c) && ispunct (c))
+# define ISSPACE(c) (ISASCII (c) && isspace (c))
+# define ISUPPER(c) (ISASCII (c) && isupper (c))
+# define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
+
+# define STREQ(s1, s2) ((strcmp (s1, s2) == 0))
+
+# if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
+/* The GNU C library provides support for user-defined character classes
+   and the functions from ISO C amendement 1.  */
+#  ifdef CHARCLASS_NAME_MAX
+#   define CHAR_CLASS_MAX_LENGTH CHARCLASS_NAME_MAX
+#  else
+/* This shouldn't happen but some implementation might still have this
+   problem.  Use a reasonable default value.  */
+#   define CHAR_CLASS_MAX_LENGTH 256
+#  endif
+
+#  ifdef _LIBC
+#   define IS_CHAR_CLASS(string) __wctype (string)
+#  else
+#   define IS_CHAR_CLASS(string) wctype (string)
+#  endif
+# else
+#  define CHAR_CLASS_MAX_LENGTH  6 /* Namely, `xdigit'.  */
+
+#  define IS_CHAR_CLASS(string)						      \
+   (STREQ (string, "alpha") || STREQ (string, "upper")			      \
+    || STREQ (string, "lower") || STREQ (string, "digit")		      \
+    || STREQ (string, "alnum") || STREQ (string, "xdigit")		      \
+    || STREQ (string, "space") || STREQ (string, "print")		      \
+    || STREQ (string, "punct") || STREQ (string, "graph")		      \
+    || STREQ (string, "cntrl") || STREQ (string, "blank"))
+# endif
+
+/* Avoid depending on library functions or files
+   whose names are inconsistent.  */
+
+# if !defined _LIBC && !defined getenv
+extern char *getenv ();
+# endif
+
+# ifndef errno
+extern int errno;
+# endif
+
+/* This function doesn't exist on most systems.  */
+
+# if !defined HAVE___STRCHRNUL && !defined _LIBC
+static char *
+__strchrnul (s, c)
+     const char *s;
+     int c;
+{
+  char *result = strchr (s, c);
+  if (result == NULL)
+    result = strchr (s, '\0');
+  return result;
+}
+# endif
+
+# ifndef internal_function
+/* Inside GNU libc we mark some function in a special way.  In other
+   environments simply ignore the marking.  */
+#  define internal_function
+# endif
+
+/* Match STRING against the filename pattern PATTERN, returning zero if
+   it matches, nonzero if not.  */
+static int internal_fnmatch __P ((const char *pattern, const char *string,
+				  int no_leading_period, int flags))
+     internal_function;
+static int
+internal_function
+internal_fnmatch (pattern, string, no_leading_period, flags)
+     const char *pattern;
+     const char *string;
+     int no_leading_period;
+     int flags;
+{
+  register const char *p = pattern, *n = string;
+  register unsigned char c;
+
+/* Note that this evaluates C many times.  */
+# ifdef _LIBC
+#  define FOLD(c) ((flags & FNM_CASEFOLD) ? tolower (c) : (c))
+# else
+#  define FOLD(c) ((flags & FNM_CASEFOLD) && ISUPPER (c) ? tolower (c) : (c))
+# endif
+
+  while ((c = *p++) != '\0')
+    {
+      c = FOLD (c);
+
+      switch (c)
+	{
+	case '?':
+	  if (*n == '\0')
+	    return FNM_NOMATCH;
+	  else if (*n == '/' && (flags & FNM_FILE_NAME))
+	    return FNM_NOMATCH;
+	  else if (*n == '.' && no_leading_period
+		   && (n == string
+		       || (n[-1] == '/' && (flags & FNM_FILE_NAME))))
+	    return FNM_NOMATCH;
+	  break;
+
+	case '\\':
+	  if (!(flags & FNM_NOESCAPE))
+	    {
+	      c = *p++;
+	      if (c == '\0')
+		/* Trailing \ loses.  */
+		return FNM_NOMATCH;
+	      c = FOLD (c);
+	    }
+	  if (FOLD ((unsigned char) *n) != c)
+	    return FNM_NOMATCH;
+	  break;
+
+	case '*':
+	  if (*n == '.' && no_leading_period
+	      && (n == string
+		  || (n[-1] == '/' && (flags & FNM_FILE_NAME))))
+	    return FNM_NOMATCH;
+
+	  for (c = *p++; c == '?' || c == '*'; c = *p++)
+	    {
+	      if (*n == '/' && (flags & FNM_FILE_NAME))
+		/* A slash does not match a wildcard under FNM_FILE_NAME.  */
+		return FNM_NOMATCH;
+	      else if (c == '?')
+		{
+		  /* A ? needs to match one character.  */
+		  if (*n == '\0')
+		    /* There isn't another character; no match.  */
+		    return FNM_NOMATCH;
+		  else
+		    /* One character of the string is consumed in matching
+		       this ? wildcard, so *??? won't match if there are
+		       less than three characters.  */
+		    ++n;
+		}
+	    }
+
+	  if (c == '\0')
+	    /* The wildcard(s) is/are the last element of the pattern.
+	       If the name is a file name and contains another slash
+	       this does mean it cannot match.  */
+	    return ((flags & FNM_FILE_NAME) && strchr (n, '/') != NULL
+		    ? FNM_NOMATCH : 0);
+	  else
+	    {
+	      const char *endp;
+
+	      endp = __strchrnul (n, (flags & FNM_FILE_NAME) ? '/' : '\0');
+
+	      if (c == '[')
+		{
+		  int flags2 = ((flags & FNM_FILE_NAME)
+				? flags : (flags & ~FNM_PERIOD));
+
+		  for (--p; n < endp; ++n)
+		    if (internal_fnmatch (p, n,
+					  (no_leading_period
+					   && (n == string
+					       || (n[-1] == '/'
+						   && (flags
+						       & FNM_FILE_NAME)))),
+					  flags2)
+			== 0)
+		      return 0;
+		}
+	      else if (c == '/' && (flags & FNM_FILE_NAME))
+		{
+		  while (*n != '\0' && *n != '/')
+		    ++n;
+		  if (*n == '/'
+		      && (internal_fnmatch (p, n + 1, flags & FNM_PERIOD,
+					    flags) == 0))
+		    return 0;
+		}
+	      else
+		{
+		  int flags2 = ((flags & FNM_FILE_NAME)
+				? flags : (flags & ~FNM_PERIOD));
+
+		  if (c == '\\' && !(flags & FNM_NOESCAPE))
+		    c = *p;
+		  c = FOLD (c);
+		  for (--p; n < endp; ++n)
+		    if (FOLD ((unsigned char) *n) == c
+			&& (internal_fnmatch (p, n,
+					      (no_leading_period
+					       && (n == string
+						   || (n[-1] == '/'
+						       && (flags
+							   & FNM_FILE_NAME)))),
+					      flags2) == 0))
+		      return 0;
+		}
+	    }
+
+	  /* If we come here no match is possible with the wildcard.  */
+	  return FNM_NOMATCH;
+
+	case '[':
+	  {
+	    /* Nonzero if the sense of the character class is inverted.  */
+	    static int posixly_correct;
+	    register int not;
+	    char cold;
+
+	    if (posixly_correct == 0)
+	      posixly_correct = getenv ("POSIXLY_CORRECT") != NULL ? 1 : -1;
+
+	    if (*n == '\0')
+	      return FNM_NOMATCH;
+
+	    if (*n == '.' && no_leading_period && (n == string
+						   || (n[-1] == '/'
+						       && (flags
+							   & FNM_FILE_NAME))))
+	      return FNM_NOMATCH;
+
+	    if (*n == '/' && (flags & FNM_FILE_NAME))
+	      /* `/' cannot be matched.  */
+	      return FNM_NOMATCH;
+
+	    not = (*p == '!' || (posixly_correct < 0 && *p == '^'));
+	    if (not)
+	      ++p;
+
+	    c = *p++;
+	    for (;;)
+	      {
+		unsigned char fn = FOLD ((unsigned char) *n);
+
+		if (!(flags & FNM_NOESCAPE) && c == '\\')
+		  {
+		    if (*p == '\0')
+		      return FNM_NOMATCH;
+		    c = FOLD ((unsigned char) *p);
+		    ++p;
+
+		    if (c == fn)
+		      goto matched;
+		  }
+		else if (c == '[' && *p == ':')
+		  {
+		    /* Leave room for the null.  */
+		    char str[CHAR_CLASS_MAX_LENGTH + 1];
+		    size_t c1 = 0;
+# if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
+		    wctype_t wt;
+# endif
+		    const char *startp = p;
+
+		    for (;;)
+		      {
+			if (c1 == CHAR_CLASS_MAX_LENGTH)
+			  /* The name is too long and therefore the pattern
+			     is ill-formed.  */
+			  return FNM_NOMATCH;
+
+			c = *++p;
+			if (c == ':' && p[1] == ']')
+			  {
+			    p += 2;
+			    break;
+			  }
+			if (c < 'a' || c >= 'z')
+			  {
+			    /* This cannot possibly be a character class name.
+			       Match it as a normal range.  */
+			    p = startp;
+			    c = '[';
+			    goto normal_bracket;
+			  }
+			str[c1++] = c;
+		      }
+		    str[c1] = '\0';
+
+# if defined _LIBC || (defined HAVE_WCTYPE_H && defined HAVE_WCHAR_H)
+		    wt = IS_CHAR_CLASS (str);
+		    if (wt == 0)
+		      /* Invalid character class name.  */
+		      return FNM_NOMATCH;
+
+		    if (__iswctype (__btowc ((unsigned char) *n), wt))
+		      goto matched;
+# else
+		    if ((STREQ (str, "alnum") && ISALNUM ((unsigned char) *n))
+			|| (STREQ (str, "alpha") && ISALPHA ((unsigned char) *n))
+			|| (STREQ (str, "blank") && ISBLANK ((unsigned char) *n))
+			|| (STREQ (str, "cntrl") && ISCNTRL ((unsigned char) *n))
+			|| (STREQ (str, "digit") && ISDIGIT ((unsigned char) *n))
+			|| (STREQ (str, "graph") && ISGRAPH ((unsigned char) *n))
+			|| (STREQ (str, "lower") && ISLOWER ((unsigned char) *n))
+			|| (STREQ (str, "print") && ISPRINT ((unsigned char) *n))
+			|| (STREQ (str, "punct") && ISPUNCT ((unsigned char) *n))
+			|| (STREQ (str, "space") && ISSPACE ((unsigned char) *n))
+			|| (STREQ (str, "upper") && ISUPPER ((unsigned char) *n))
+			|| (STREQ (str, "xdigit") && ISXDIGIT ((unsigned char) *n)))
+		      goto matched;
+# endif
+		  }
+		else if (c == '\0')
+		  /* [ (unterminated) loses.  */
+		  return FNM_NOMATCH;
+		else
+		  {
+		  normal_bracket:
+		    if (FOLD (c) == fn)
+		      goto matched;
+
+		    cold = c;
+		    c = *p++;
+
+		    if (c == '-' && *p != ']')
+		      {
+			/* It is a range.  */
+			unsigned char cend = *p++;
+			if (!(flags & FNM_NOESCAPE) && cend == '\\')
+			  cend = *p++;
+			if (cend == '\0')
+			  return FNM_NOMATCH;
+
+			if (cold <= fn && fn <= FOLD (cend))
+			  goto matched;
+
+			c = *p++;
+		      }
+		  }
+
+		if (c == ']')
+		  break;
+	      }
+
+	    if (!not)
+	      return FNM_NOMATCH;
+	    break;
+
+	  matched:
+	    /* Skip the rest of the [...] that already matched.  */
+	    while (c != ']')
+	      {
+		if (c == '\0')
+		  /* [... (unterminated) loses.  */
+		  return FNM_NOMATCH;
+
+		c = *p++;
+		if (!(flags & FNM_NOESCAPE) && c == '\\')
+		  {
+		    if (*p == '\0')
+		      return FNM_NOMATCH;
+		    /* XXX 1003.2d11 is unclear if this is right.  */
+		    ++p;
+		  }
+		else if (c == '[' && *p == ':')
+		  {
+		    do
+		      if (*++p == '\0')
+			return FNM_NOMATCH;
+		    while (*p != ':' || p[1] == ']');
+		    p += 2;
+		    c = *p;
+		  }
+	      }
+	    if (not)
+	      return FNM_NOMATCH;
+	  }
+	  break;
+
+	default:
+	  if (c != FOLD ((unsigned char) *n))
+	    return FNM_NOMATCH;
+	}
+
+      ++n;
+    }
+
+  if (*n == '\0')
+    return 0;
+
+  if ((flags & FNM_LEADING_DIR) && *n == '/')
+    /* The FNM_LEADING_DIR flag says that "foo*" matches "foobar/frobozz".  */
+    return 0;
+
+  return FNM_NOMATCH;
+
+# undef FOLD
+}
+
+
+int
+fnmatch (pattern, string, flags)
+     const char *pattern;
+     const char *string;
+     int flags;
+{
+  return internal_fnmatch (pattern, string, flags & FNM_PERIOD, flags);
+}
+
+#endif	/* _LIBC or not __GNU_LIBRARY__.  */

lib/fnmatch.in.h

@@ -0,0 +1,85 @@
+/* Copyright (C) 1991, 1992, 1993, 1996, 1997, 1998, 1999 Free Software
+Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with this library; see the file COPYING.LIB.  If not, write to the Free
+Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA.  */
+
+#ifndef	_FNMATCH_H
+#define	_FNMATCH_H	1
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#if defined __cplusplus || (defined __STDC__ && __STDC__) || defined WINDOWS32
+# if !defined __GLIBC__
+#  undef	__P
+#  define __P(protos)	protos
+# endif
+#else /* Not C++ or ANSI C.  */
+# undef	__P
+# define __P(protos)	()
+/* We can get away without defining `const' here only because in this file
+   it is used only inside the prototype for `fnmatch', which is elided in
+   non-ANSI C where `const' is problematical.  */
+#endif /* C++ or ANSI C.  */
+
+#ifndef const
+# if (defined __STDC__ && __STDC__) || defined __cplusplus || defined WINDOWS32
+#  define __const	const
+# else
+#  define __const
+# endif
+#endif
+
+/* We #undef these before defining them because some losing systems
+   (HP-UX A.08.07 for example) define these in <unistd.h>.  */
+#undef	FNM_PATHNAME
+#undef	FNM_NOESCAPE
+#undef	FNM_PERIOD
+
+/* Bits set in the FLAGS argument to `fnmatch'.  */
+#define	FNM_PATHNAME	(1 << 0) /* No wildcard can ever match `/'.  */
+#define	FNM_NOESCAPE	(1 << 1) /* Backslashes don't quote special chars.  */
+#define	FNM_PERIOD	(1 << 2) /* Leading `.' is matched only explicitly.  */
+
+#if !defined _POSIX_C_SOURCE || _POSIX_C_SOURCE < 2 || defined _GNU_SOURCE
+# define FNM_FILE_NAME	 FNM_PATHNAME	/* Preferred GNU name.  */
+# define FNM_LEADING_DIR (1 << 3)	/* Ignore `/...' after a match.  */
+# define FNM_CASEFOLD	 (1 << 4)	/* Compare without regard to case.  */
+#endif
+
+/* Value returned by `fnmatch' if STRING does not match PATTERN.  */
+#define	FNM_NOMATCH	1
+
+/* This value is returned if the implementation does not support
+   `fnmatch'.  Since this is not the case here it will never be
+   returned but the conformance test suites still require the symbol
+   to be defined.  */
+#ifdef _XOPEN_SOURCE
+# define FNM_NOSYS	(-1)
+#endif
+
+/* Match NAME against the filename pattern PATTERN,
+   returning zero if it matches, FNM_NOMATCH if not.  */
+extern int fnmatch __P ((__const char *__pattern, __const char *__name,
+			 int __flags));
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* fnmatch.h */

lib/glob.in.h

@@ -0,0 +1,210 @@
+/* Copyright (C) 1991, 1992, 1995, 1996, 1997, 1998 Free Software Foundation,
+Inc.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with this library; see the file COPYING.LIB.  If not, write to the Free
+Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA.  */
+
+#ifndef	_GLOB_H
+#define	_GLOB_H	1
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#undef	__ptr_t
+#if defined __cplusplus || (defined __STDC__ && __STDC__) || defined WINDOWS32
+# if !defined __GLIBC__
+#  undef __P
+#  undef __PMT
+#  define __P(protos)	protos
+#  define __PMT(protos)	protos
+#  if !defined __GNUC__ || __GNUC__ < 2
+#   undef __const
+#   define __const const
+#  endif
+# endif
+# define __ptr_t	void *
+#else /* Not C++ or ANSI C.  */
+# undef	__P
+# undef __PMT
+# define __P(protos)	()
+# define __PMT(protos)	()
+# undef	__const
+# define __const
+# define __ptr_t	char *
+#endif /* C++ or ANSI C.  */
+
+/* We need `size_t' for the following definitions.  */
+#ifndef __size_t
+# if defined __FreeBSD__
+#  define __size_t size_t
+# else
+#  if defined __GNUC__ && __GNUC__ >= 2
+typedef __SIZE_TYPE__ __size_t;
+#  else
+/* This is a guess.  */
+/*hb
+ *	Conflicts with DECCs already defined type __size_t.
+ *	Defining an own type with a name beginning with '__' is no good.
+ *	Anyway if DECC is used and __SIZE_T is defined then __size_t is
+ *	already defined (and I hope it's exactly the one we need here).
+ */
+#   if !(defined __DECC && defined __SIZE_T)
+typedef unsigned long int __size_t;
+#   endif
+#  endif
+# endif
+#else
+/* The GNU CC stddef.h version defines __size_t as empty.  We need a real
+   definition.  */
+# undef __size_t
+# define __size_t size_t
+#endif
+
+/* Bits set in the FLAGS argument to `glob'.  */
+#define	GLOB_ERR	(1 << 0)/* Return on read errors.  */
+#define	GLOB_MARK	(1 << 1)/* Append a slash to each name.  */
+#define	GLOB_NOSORT	(1 << 2)/* Don't sort the names.  */
+#define	GLOB_DOOFFS	(1 << 3)/* Insert PGLOB->gl_offs NULLs.  */
+#define	GLOB_NOCHECK	(1 << 4)/* If nothing matches, return the pattern.  */
+#define	GLOB_APPEND	(1 << 5)/* Append to results of a previous call.  */
+#define	GLOB_NOESCAPE	(1 << 6)/* Backslashes don't quote metacharacters.  */
+#define	GLOB_PERIOD	(1 << 7)/* Leading `.' can be matched by metachars.  */
+
+#if (!defined _POSIX_C_SOURCE || _POSIX_C_SOURCE < 2 || defined _BSD_SOURCE \
+     || defined _GNU_SOURCE)
+# define GLOB_MAGCHAR	 (1 << 8)/* Set in gl_flags if any metachars seen.  */
+# define GLOB_ALTDIRFUNC (1 << 9)/* Use gl_opendir et al functions.  */
+# define GLOB_BRACE	 (1 << 10)/* Expand "{a,b}" to "a" "b".  */
+# define GLOB_NOMAGIC	 (1 << 11)/* If no magic chars, return the pattern.  */
+# define GLOB_TILDE	 (1 << 12)/* Expand ~user and ~ to home directories. */
+# define GLOB_ONLYDIR	 (1 << 13)/* Match only directories.  */
+# define GLOB_TILDE_CHECK (1 << 14)/* Like GLOB_TILDE but return an error
+				      if the user name is not available.  */
+# define __GLOB_FLAGS	(GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS| \
+			 GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND|     \
+			 GLOB_PERIOD|GLOB_ALTDIRFUNC|GLOB_BRACE|     \
+			 GLOB_NOMAGIC|GLOB_TILDE|GLOB_ONLYDIR|GLOB_TILDE_CHECK)
+#else
+# define __GLOB_FLAGS	(GLOB_ERR|GLOB_MARK|GLOB_NOSORT|GLOB_DOOFFS| \
+			 GLOB_NOESCAPE|GLOB_NOCHECK|GLOB_APPEND|     \
+			 GLOB_PERIOD)
+#endif
+
+/* Error returns from `glob'.  */
+#define	GLOB_NOSPACE	1	/* Ran out of memory.  */
+#define	GLOB_ABORTED	2	/* Read error.  */
+#define	GLOB_NOMATCH	3	/* No matches found.  */
+#define GLOB_NOSYS	4	/* Not implemented.  */
+#ifdef _GNU_SOURCE
+/* Previous versions of this file defined GLOB_ABEND instead of
+   GLOB_ABORTED.  Provide a compatibility definition here.  */
+# define GLOB_ABEND GLOB_ABORTED
+#endif
+
+/* Structure describing a globbing run.  */
+#if !defined _AMIGA && !defined VMS /* Buggy compiler.   */
+struct stat;
+#endif
+typedef struct
+  {
+    __size_t gl_pathc;		/* Count of paths matched by the pattern.  */
+    char **gl_pathv;		/* List of matched pathnames.  */
+    __size_t gl_offs;		/* Slots to reserve in `gl_pathv'.  */
+    int gl_flags;		/* Set to FLAGS, maybe | GLOB_MAGCHAR.  */
+
+    /* If the GLOB_ALTDIRFUNC flag is set, the following functions
+       are used instead of the normal file access functions.  */
+    void (*gl_closedir) __PMT ((void *));
+    struct dirent *(*gl_readdir) __PMT ((void *));
+    __ptr_t (*gl_opendir) __PMT ((__const char *));
+    int (*gl_lstat) __PMT ((__const char *, struct stat *));
+#if defined(VMS) && defined(__DECC) && !defined(_POSIX_C_SOURCE)
+    int (*gl_stat) __PMT ((__const char *, struct stat *, ...));
+#else
+    int (*gl_stat) __PMT ((__const char *, struct stat *));
+#endif
+  } glob_t;
+
+#ifdef _LARGEFILE64_SOURCE
+struct stat64;
+typedef struct
+  {
+    __size_t gl_pathc;
+    char **gl_pathv;
+    __size_t gl_offs;
+    int gl_flags;
+
+    /* If the GLOB_ALTDIRFUNC flag is set, the following functions
+       are used instead of the normal file access functions.  */
+    void (*gl_closedir) __PMT ((void *));
+    struct dirent64 *(*gl_readdir) __PMT ((void *));
+    __ptr_t (*gl_opendir) __PMT ((__const char *));
+    int (*gl_lstat) __PMT ((__const char *, struct stat64 *));
+    int (*gl_stat) __PMT ((__const char *, struct stat64 *));
+  } glob64_t;
+#endif
+
+#if _FILE_OFFSET_BITS == 64 && __GNUC__ < 2
+# define glob glob64
+# define globfree globfree64
+#else
+# ifdef _LARGEFILE64_SOURCE
+extern int glob64 __P ((__const char *__pattern, int __flags,
+			int (*__errfunc) (__const char *, int),
+			glob64_t *__pglob));
+
+extern void globfree64 __P ((glob64_t *__pglob));
+# endif
+#endif
+
+/* Do glob searching for PATTERN, placing results in PGLOB.
+   The bits defined above may be set in FLAGS.
+   If a directory cannot be opened or read and ERRFUNC is not nil,
+   it is called with the pathname that caused the error, and the
+   `errno' value from the failing call; if it returns non-zero
+   `glob' returns GLOB_ABEND; if it returns zero, the error is ignored.
+   If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned.
+   Otherwise, `glob' returns zero.  */
+#if _FILE_OFFSET_BITS != 64 || __GNUC__ < 2
+extern int glob __P ((__const char *__pattern, int __flags,
+		      int (*__errfunc) (__const char *, int),
+		      glob_t *__pglob));
+
+/* Free storage allocated in PGLOB by a previous `glob' call.  */
+extern void globfree __P ((glob_t *__pglob));
+#else
+extern int glob __P ((__const char *__pattern, int __flags,
+		      int (*__errfunc) (__const char *, int),
+		      glob_t *__pglob)) __asm__ ("glob64");
+
+extern void globfree __P ((glob_t *__pglob)) __asm__ ("globfree64");
+#endif
+
+
+#ifdef _GNU_SOURCE
+/* Return nonzero if PATTERN contains any metacharacters.
+   Metacharacters can be quoted with backslashes if QUOTE is nonzero.
+
+   This function is not part of the interface specified by POSIX.2
+   but several programs want to use it.  */
+extern int glob_pattern_p __P ((__const char *__pattern, int __quote));
+#endif
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* glob.h  */

m4/.gitignore

@@ -0,0 +1,5 @@
+*
+!/.gitignore
+!/aclocal.m4
+!/dospaths.m4
+

m4/acinclude.m4

@@ -0,0 +1,132 @@
+dnl acinclude.m4 -- Extra macros needed for GNU make.
+dnl
+dnl Automake will incorporate this into its generated aclocal.m4.
+dnl Copyright (C) 1998-2019 Free Software Foundation, Inc.
+dnl This file is part of GNU Make.
+dnl
+dnl GNU Make is free software; you can redistribute it and/or modify it under
+dnl the terms of the GNU General Public License as published by the Free
+dnl Software Foundation; either version 3 of the License, or (at your option)
+dnl any later version.
+dnl
+dnl GNU Make is distributed in the hope that it will be useful, but WITHOUT
+dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+dnl FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for.
+dnl more details.
+dnl
+dnl You should have received a copy of the GNU General Public License along
+dnl with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+dnl ---------------------------------------------------------------------------
+dnl Got this from the lynx 2.8 distribution.
+dnl by T.E.Dickey <dickey@clark.net>
+dnl and Jim Spath <jspath@mail.bcpl.lib.md.us>
+dnl and Philippe De Muyter <phdm@macqel.be>
+dnl
+dnl Created: 1997/1/28
+dnl Updated: 1997/12/23
+dnl ---------------------------------------------------------------------------
+dnl After checking for functions in the default $LIBS, make a further check
+dnl for the functions that are netlib-related (these aren't always in the
+dnl libc, etc., and have to be handled specially because there are conflicting
+dnl and broken implementations.
+dnl Common library requirements (in order):
+dnl	-lresolv -lsocket -lnsl
+dnl	-lnsl -lsocket
+dnl	-lsocket
+dnl	-lbsd
+AC_DEFUN([CF_NETLIBS],[
+cf_test_netlibs=no
+AC_MSG_CHECKING(for network libraries)
+AC_CACHE_VAL(cf_cv_netlibs,[
+AC_MSG_RESULT(working...)
+cf_cv_netlibs=""
+cf_test_netlibs=yes
+AC_CHECK_FUNCS(gethostname,,[
+	CF_RECHECK_FUNC(gethostname,nsl,cf_cv_netlibs,[
+		CF_RECHECK_FUNC(gethostname,socket,cf_cv_netlibs)])])
+#
+# FIXME:  sequent needs this library (i.e., -lsocket -linet -lnsl), but
+# I don't know the entrypoints - 97/7/22 TD
+AC_CHECK_LIB(inet,main,cf_cv_netlibs="-linet $cf_cv_netlibs")
+#
+if test "$ac_cv_func_lsocket" != no ; then
+AC_CHECK_FUNCS(socket,,[
+	CF_RECHECK_FUNC(socket,socket,cf_cv_netlibs,[
+		CF_RECHECK_FUNC(socket,bsd,cf_cv_netlibs)])])
+fi
+#
+AC_CHECK_FUNCS(gethostbyname,,[
+	CF_RECHECK_FUNC(gethostbyname,nsl,cf_cv_netlibs)])
+])
+LIBS="$LIBS $cf_cv_netlibs"
+test $cf_test_netlibs = no && echo "$cf_cv_netlibs" >&AC_FD_MSG
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl Re-check on a function to see if we can pick it up by adding a library.
+dnl	$1 = function to check
+dnl	$2 = library to check in
+dnl	$3 = environment to update (e.g., $LIBS)
+dnl	$4 = what to do if this fails
+dnl
+dnl This uses 'unset' if the shell happens to support it, but leaves the
+dnl configuration variable set to 'unknown' if not.  This is a little better
+dnl than the normal autoconf test, which gives misleading results if a test
+dnl for the function is made (e.g., with AC_CHECK_FUNC) after this macro is
+dnl used (autoconf does not distinguish between a null token and one that is
+dnl set to 'no').
+AC_DEFUN([CF_RECHECK_FUNC],[
+AC_CHECK_LIB($2,$1,[
+	CF_UPPER(cf_tr_func,$1)
+	AC_DEFINE_UNQUOTED(HAVE_$cf_tr_func,1,[Define if you have function $1])
+	ac_cv_func_$1=yes
+	$3="-l$2 [$]$3"],[
+	ac_cv_func_$1=unknown
+	unset ac_cv_func_$1 2>/dev/null
+	$4],
+	[[$]$3])
+])dnl
+dnl ---------------------------------------------------------------------------
+dnl Make an uppercase version of a variable
+dnl $1=uppercase($2)
+AC_DEFUN([CF_UPPER],
+[
+changequote(,)dnl
+$1=`echo $2 | tr '[a-z]' '[A-Z]'`
+changequote([,])dnl
+])dnl
+
+
+dnl ---------------------------------------------------------------------------
+dnl From Paul Eggert <eggert@twinsun.com>
+dnl Update for Darwin by Troy Runkel <Troy.Runkel@mathworks.com>
+dnl Update for AIX by Olexiy Buyanskyy (Savannah bug 32485)
+
+AC_DEFUN([AC_STRUCT_ST_MTIM_NSEC],
+ [AC_CACHE_CHECK([for nanoseconds field of struct stat],
+   ac_cv_struct_st_mtim_nsec,
+   [ac_save_CPPFLAGS="$CPPFLAGS"
+    ac_cv_struct_st_mtim_nsec=no
+    # st_mtim.tv_nsec -- the usual case
+    # st_mtim._tv_nsec -- Solaris 2.6, if
+    #	(defined _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED == 1
+    #	 && !defined __EXTENSIONS__)
+    # st_mtim.st__tim.tv_nsec -- UnixWare 2.1.2
+    # st_mtime_n -- AIX 5.2 and above
+    # st_mtimespec.tv_nsec -- Darwin (Mac OSX)
+    for ac_val in st_mtim.tv_nsec st_mtim._tv_nsec st_mtim.st__tim.tv_nsec st_mtime_n st_mtimespec.tv_nsec; do
+      CPPFLAGS="$ac_save_CPPFLAGS -DST_MTIM_NSEC=$ac_val"
+      AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/stat.h>
+	], [struct stat s; s.ST_MTIM_NSEC;],
+        [ac_cv_struct_st_mtim_nsec=$ac_val; break])
+    done
+    CPPFLAGS="$ac_save_CPPFLAGS"
+   ])
+
+  if test $ac_cv_struct_st_mtim_nsec != no; then
+    AC_DEFINE_UNQUOTED([ST_MTIM_NSEC], [$ac_cv_struct_st_mtim_nsec],
+	[Define if struct stat contains a nanoseconds field])
+  fi
+ ]
+)

m4/dospaths.m4

@@ -0,0 +1,33 @@
+# Test if the system uses DOS-style pathnames (drive specs and backslashes)
+# By Paul Smith <psmith@gnu.org>.  Based on dos.m4 by Jim Meyering.
+#
+# Copyright (C) 1993-2019 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+AC_DEFUN([pds_AC_DOS_PATHS], [
+  AC_CACHE_CHECK([whether system uses MSDOS-style paths], [ac_cv_dos_paths], [
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#if !defined _WIN32 && !defined __WIN32__ && !defined __MSDOS__ && !defined __EMX__ && !defined __MSYS__ && !defined __CYGWIN__
+neither MSDOS nor Windows nor OS2
+#endif
+]])],
+        [ac_cv_dos_paths=yes],
+        [ac_cv_dos_paths=no])])
+
+  AS_IF([test x"$ac_cv_dos_paths" = xyes],
+  [ AC_DEFINE_UNQUOTED([HAVE_DOS_PATHS], 1,
+                       [Define if the system uses DOS-style pathnames.])])
+])

maintMakefile

@@ -0,0 +1,505 @@
+# Maintainer-only makefile segment.  This contains things that are relevant
+# only if you have the full copy of the GNU make sources from the Git
+# tree, not a dist copy.
+
+# --------------------- #
+# Updating everything.  #
+# --------------------- #
+
+.PHONY: update
+update:
+
+BUGLIST := bug-make@gnu.org
+
+# These are related to my personal setup.
+GPG_KEYID := 80CB727A20C79BB2
+
+# SRCROOTDIR is just a handy location to keep source files in
+SRCROOTDIR ?= $(HOME)/src
+
+# Where the gnulib project has been locally cloned
+GNULIBDIR ?= $(SRCROOTDIR)/gnulib
+
+# Where to put the CVS checkout of the GNU web repository
+GNUWEBDIR ?= $(SRCROOTDIR)/gnu-www
+
+# Where to put the CVS checkout of the GNU make web repository
+MAKEWEBDIR ?= $(SRCROOTDIR)/make/make-web
+
+# We like mondo-warnings!
+# Also force comments to be preserved.  This helps when using ccache, in
+# combination with GCC 7's implicit-fallthrough warning.
+AM_CFLAGS += -C -Wall -Wextra -Werror -Wwrite-strings -Wshadow \
+	-Wdeclaration-after-statement -Wbad-function-cast -Wformat-security \
+	-Wtype-limits -Wunused-but-set-parameter -Wlogical-op -Wpointer-arith \
+	-Wignored-qualifiers -Wformat-signedness -Wduplicated-cond
+
+# Unfortunately the Guile headers are sometimes broken.  Convince GCC
+# to treat them as system headers so warnings are ignored.
+GUILE_CFLAGS := $(patsubst -I%,-isystem %,$(GUILE_CFLAGS))
+
+MAKE_MAINTAINER_MODE := -DMAKE_MAINTAINER_MODE
+AM_CPPFLAGS += $(MAKE_MAINTAINER_MODE)
+
+TEMPLATES = README README.DOS README.W32 README.OS2 \
+	    src/config.ami src/configh.dos src/config.h.W32 src/config.h-vms
+
+all: $(TEMPLATES)
+
+# Create preprocessor output files--GCC specific!
+%.i : %.c
+	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) -E -dD -o $@ $<
+
+# General rule for turning a .template into a regular file.
+#
+$(TEMPLATES) : % : %.template Makefile
+	rm -f $@
+	sed -e 's@%VERSION%@$(VERSION)@g' \
+	    -e 's@%PACKAGE%@$(PACKAGE)@g' \
+	  $< > $@
+	chmod a-w $@
+
+# Construct Makefiles by adding on dependencies, etc.
+#
+cvt = $(patsubst $1/%,$$($1)%,$(filter %.c,$2))
+Basic.mk: Basic.mk.template .dep_segment Makefile
+	rm -f $@
+	sed -e 's@%VERSION%@$(VERSION)@g' \
+	    -e 's@%make_SOURCES%@$(call cvt,src,$(make_SRCS))@g' \
+	    -e 's@%w32_SOURCES%@$(call cvt,src,$(w32_SRCS))@g' \
+	    -e 's@%vms_SOURCES%@$(call cvt,src,$(vms_SRCS))@g' \
+	    -e 's@%amiga_SOURCES%@$(call cvt,src,$(amiga_SRCS))@g' \
+	    -e 's@%loadavg_SOURCES%@$(call cvt,lib,$(loadavg_SRCS))@g' \
+	    -e 's@%alloca_SOURCES%@$(call cvt,lib,$(alloca_SRCS))@g' \
+	    -e 's@%glob_SOURCES%@$(call cvt,lib,$(glob_SRCS))@g' \
+	  $< > $@
+	echo >>$@; echo '# --------------- DEPENDENCIES' >>$@; echo '#' >>$@; \
+	sed -e 's@^\([^ ]*\)\.o:@$$(OUTDIR)\1.$$(OBJEXT):@' \
+	    -e 's@\([^ ]*\.[ch]\)@$$(SRCDIR)/\1@g' \
+	    -e 's@$$(SRCDIR)/src/config.h@$$(OUTDIR)src/config.h@g' \
+	    -e 's@$$(SRCDIR)/lib/stdlib.h@@g' \
+	    -e 's@$$(SRCDIR)/lib/sys/types.h@@g' \
+	    -e 's@$$(SRCDIR)/lib/unistd.h@@g' \
+	  $(word 2,$^) >>$@
+	chmod a-w $@
+
+# Construct build.sh.in
+#
+build.sh.in: build.template Makefile
+	rm -f $@
+	sed -e 's@%objs%@$(patsubst %.o,%.$${OBJEXT},$(filter-out src/remote-%,$(make_OBJECTS)))@g' \
+	  $< > $@
+	chmod a-w+x $@
+
+all: build.sh.in
+
+
+# Use automake to build a dependency list file, for Makebase.mk.
+#
+# Automake used to have a --generate-deps flag but it's gone now, so we have
+# to do it ourselves.
+#
+DEP_FILES := $(wildcard src/$(DEPDIR)/*.Po)
+.dep_segment: Makefile.am maintMakefile $(DEP_FILES)
+	rm -f $@
+	(for f in src/$(DEPDIR)/*.Po; do \
+	   echo ""; \
+	   echo "# $$f"; \
+	   sed	-e '/^[^:]*\.[ch] *:/d' \
+		-e 's, /usr/[^ ]*,,g' \
+		-e 's, $(srcdir)/, ,g' \
+		-e '/^ *\\$$/d' \
+		-e '/^ *$$/d' \
+		< $$f; \
+	 done) > $@
+
+# Cleaning
+
+GIT :=	git
+
+# git-clean:      Clean all "ignored" files.  Leave untracked files.
+# git-very-clean: Clean all files that aren't stored in source control.
+
+.PHONY: git-clean git-very-clean
+git-clean:
+	-$(GIT) clean -fdX
+git-very-clean: git-clean
+	-$(GIT) clean -fd
+
+
+## ---------------------- ##
+## Generating ChangeLog.  ##
+## ---------------------- ##
+
+gl2cl-date := 2013-10-10
+gl2cl := $(GNULIBDIR)/build-aux/gitlog-to-changelog
+
+# Rebuild the changelog whenever a new commit is added
+ChangeLog: .check-git-HEAD
+	if test -f '$(gl2cl)'; then \
+	    '$(gl2cl)' --since='$(gl2cl-date)' > '$@'; \
+	else \
+	    echo "WARNING: $(gl2cl) is not available.  No $@ generated."; \
+	fi
+
+.PHONY: .check-git-HEAD
+.check-git-HEAD:
+	sha="`git rev-parse HEAD`"; \
+	[ -f '$@' ] && [ "`cat '$@' 2>/dev/null`" = "$$sha" ] \
+	    || echo "$$sha" > '$@'
+
+
+## ---------------- ##
+## Updating files.  ##
+## ---------------- ##
+RSYNC = rsync -Lrtvz
+WGET = wget --passive-ftp -np -nv
+ftp-gnu = ftp://ftp.gnu.org/gnu
+
+move_if_change =  if test -r $(target) && cmp -s $(target).t $(target); then \
+		    echo $(target) is unchanged; rm -f $(target).t; \
+		  else \
+		    mv -f $(target).t $(target); \
+		  fi
+
+# ------------------- #
+# Updating PO files.  #
+# ------------------- #
+
+# NOTE: This is handled by the bootstrap script now
+
+#update: po-update
+update: po-check
+
+# PO archive mirrors --- Be careful; some might not be fully populated!
+#   ftp://ftp.unex.es/pub/gnu-i18n/po/maint/
+#   http://translation.sf.net/maint/
+#   ftp://tiger.informatik.hu-berlin.de/pub/po/maint/
+
+po_wget_flags =	--recursive --level=1 --no-directories --no-check-certificate
+po_repo = https://translationproject.org/latest/$(PACKAGE)
+po_sync = translationproject.org::tp/latest/$(PACKAGE)/
+
+.PHONY: do-po-update po-update
+do-po-update:
+	tmppo="/tmp/po-$(PACKAGE)-$(VERSION).$$$$" \
+	  && rm -rf "$$tmppo" \
+	  && mkdir "$$tmppo" \
+	  && $(RSYNC) $(po_sync)  "$$tmppo" \
+	  && cp "$$tmppo"/*.po $(top_srcdir)/po \
+	  && rm -rf "$$tmppo"
+	cd po && $(MAKE) update-po
+	$(MAKE) po-check
+
+po-update:
+	[ -d "po" ] && $(MAKE) do-po-update
+
+# -------------------------- #
+# Updating GNU build files.  #
+# -------------------------- #
+
+# Note: this is handled by the bootstrap script now
+#update: scm-update
+
+.PHONY: scm-update
+scm-update: get-build-aux/texinfo.tex get-build-aux/config.guess \
+		get-build-aux/config.sub get-doc/make-stds.texi get-doc/fdl.texi
+
+# The following pseudo table associates a local directory and a URL
+# with each of the files that belongs to some other package and is
+# regularly updated from the specified URL.
+
+cvs-url = https://savannah.gnu.org/cgi-bin/viewcvs/~checkout~
+git-url = https://git.savannah.gnu.org/cgit
+target = $(patsubst get-%,%,$@)
+
+config-url = $(git-url)/config.git/plain/$(patsubst get-build-aux/%,%,$@)
+get-build-aux/config.guess get-build-aux/config.sub:
+	@echo $(WGET) $(config-url) -O $(target) \
+	  && $(WGET) $(config-url) -O $(target).t \
+	  && $(move_if_change)
+
+gnulib-url = $(git-url)/gnulib.git/plain/build-aux/$(patsubst get-build-aux/%,%,$@)
+get-build-aux/texinfo.tex:
+	@echo $(WGET) $(gnulib-url) -O $(target) \
+	  && $(WGET) $(gnulib-url) -O $(target).t \
+	  && $(move_if_change)
+
+gnustandards-url = $(cvs-url)/gnustandards/gnustandards/$(patsubst get-doc/%,%,$@)
+get-doc/make-stds.texi get-doc/fdl.texi:
+	@echo $(WGET) $(gnustandards-url) -O $(target) \
+	  && $(WGET) $(gnustandards-url) -O $(target).t \
+	  && $(move_if_change)
+
+
+# ---------------------------------- #
+# Alternative configuration checks.  #
+# ---------------------------------- #
+
+CONFIG_CHECKS := \
+	checkcfg.--disable-job-server \
+	checkcfg.--disable-load \
+	checkcfg.--without-guile \
+	checkcfg.--disable-posix-spawn \
+	checkcfg.make_cv_sys_gnu_glob^no \
+	checkcfg.ac_cv_func_getloadavg^no+ac_cv_have_decl_getloadavg^no+gl_cv_have_raw_decl_getloadavg^no+ac_cv_lib_util_getloadavg^no+ac_cv_lib_getloadavg_getloadavg^no \
+	checkcfg.CPPFLAGS^-DNO_OUTPUT_SYNC \
+	checkcfg.CPPFLAGS^-DNO_ARCHIVES
+
+.PHONY: check-alt-config
+check-alt-config: $(CONFIG_CHECKS)
+
+# Trick GNU make so it doesn't run the submake as a recursive make.
+NR_MAKE = $(MAKE)
+
+# Check builds both with build.sh and with make
+$(CONFIG_CHECKS): checkcfg.%: distdir
+	@echo "Building $@ (output in checkcfg.$*.log)"
+	exec >'checkcfg.$*.log' 2>&1; \
+	   echo "Testing configure with $(subst ^,=,$(subst +, ,$*))"; set -x; \
+	   rm -rf $(distdir)/_build \
+	&& mkdir $(distdir)/_build \
+	&& cd $(distdir)/_build \
+	&& ../configure --srcdir=.. $(subst ^,=,$(subst +, ,$*)) \
+		$(AM_DISTCHECK_CONFIGURE_FLAGS) $(DISTCHECK_CONFIGURE_FLAGS)
+	exec >>'checkcfg.$*.log' 2>&1; set -x; \
+	   cd $(distdir)/_build \
+	&& ./build.sh \
+	&& ./make $(AM_MAKEFLAGS) check \
+	&& ./make $(AM_MAKEFLAGS) clean
+	exec >>'checkcfg.$*.log' 2>&1; set -x; \
+	   cd $(distdir)/_build \
+	&& $(NR_MAKE) $(AM_MAKEFLAGS) CFLAGS='$(AM_CFLAGS)' \
+	&& ./make $(AM_MAKEFLAGS) check \
+	&& ./make $(AM_MAKEFLAGS) clean
+
+# Try using Basic.mk.  I can't test this on POSIX systems because it is only
+# used for non-POSIX systems; POSIX systems can just use normal
+# configure/Makefile.in etc.
+checkcfg.basicmk: checkcfg.% : distdir
+	@echo "Building $@ (output in checkcfg.$*.log)"
+	exec >'checkcfg.$*.log' 2>&1; \
+	   echo "Testing Basic.mk SRCDIR=.."; set -x; \
+	   rm -rf $(distdir)/_build \
+	&& mkdir $(distdir)/_build \
+	&& cd $(distdir)/_build \
+	&& ../configure --srcdir=.. \
+		$(AM_DISTCHECK_CONFIGURE_FLAGS) $(DISTCHECK_CONFIGURE_FLAGS)
+	exec >>'checkcfg.$*.log' 2>&1; set -x; \
+	   cd $(distdir)/_build \
+	&& $(NR_MAKE) $(AM_MAKEFLAGS) -f ../Basic.mk SRCDIR=.. CFLAGS='$(AM_CFLAGS)' \
+	&& ./make $(AM_MAKEFLAGS) -f ../Basic.mk SRCDIR=.. check \
+	&& ./make $(AM_MAKEFLAGS) -f ../Basic.mk SRCDIR=.. clean
+	exec >>'checkcfg.$*.log' 2>&1; \
+	   echo "Testing Basic.mk SRCDIR=."; set -x; \
+	&& rm -rf $(distdir)/_build \
+	&& cd $(distdir) \
+	&& ./configure \
+		$(AM_DISTCHECK_CONFIGURE_FLAGS) $(DISTCHECK_CONFIGURE_FLAGS) \
+	&& $(NR_MAKE) $(AM_MAKEFLAGS) -f Basic.mk CFLAGS='$(AM_CFLAGS)' \
+	&& ./make $(AM_MAKEFLAGS) -f Basic.mk check \
+	&& ./make $(AM_MAKEFLAGS) -f Basic.mk clean
+
+
+## --------------- ##
+## Sanity checks.  ##
+## --------------- ##
+
+# Before we build a distribution be sure we run our local checks
+#distdir: local-check
+
+.PHONY: local-check po-check changelog-check
+
+# Checks that don't require Git.  Run 'changelog-check' last as
+# previous test may reveal problems requiring new ChangeLog entries.
+local-check: po-check changelog-check
+
+# copyright-check writable-files
+
+changelog-check:
+	if head $(top_srcdir)/ChangeLog | grep 'Version $(VERSION)' >/dev/null; then \
+	  :; \
+	else \
+	  echo "$(VERSION) not in ChangeLog" 1>&2; \
+	  exit 1; \
+	fi
+
+# Verify that all source files using _() are listed in po/POTFILES.in.
+# Ignore src/makeint.h; it defines _().
+po-check:
+	if test -f po/POTFILES.in; then \
+	  grep '^[^#]' po/POTFILES.in | sort > $@-1; \
+	  find [a-z]* -name '*.[ch]' | xargs grep -l '\b_(' | grep -v src/makeint.h | sort > $@-2; \
+	  diff -u $@-1 $@-2 || exit 1; \
+	  rm -f $@-1 $@-2; \
+	fi
+
+
+## --------------- ##
+## Generate docs.  ##
+## --------------- ##
+
+.PHONY: update-makeweb gendocs
+
+CVS = cvs
+
+makeweb-repo = $(USER)@cvs.sv.gnu.org:/web/make
+gnuweb-repo = :pserver:anonymous@cvs.sv.gnu.org:/web/www
+gnuweb-dir = www/server/standards
+
+# Get the GNU make web page boilerplate etc.
+update-makeweb:
+	[ -d '$(MAKEWEBDIR)' ] || mkdir -p '$(MAKEWEBDIR)'
+	[ -d '$(MAKEWEBDIR)'/CVS ] \
+	    && { cd '$(MAKEWEBDIR)' && $(CVS) update; } \
+	    || { mkdir -p '$(dir $(MAKEWEBDIR))' && cd '$(dir $(MAKEWEBDIR))' \
+		 && $(CVS) -d $(makeweb-repo) co -d '$(notdir $(MAKEWEBDIR))' make; }
+
+# Get the GNU web page boilerplate etc.
+update-gnuweb:
+	[ -d '$(GNUWEBDIR)' ] || mkdir -p '$(GNUWEBDIR)'
+	[ -d '$(GNUWEBDIR)/$(gnuweb-dir)'/CVS ] \
+	    && { cd '$(GNUWEBDIR)/$(gnuweb-dir)' && $(CVS) update; } \
+	    || { cd '$(GNUWEBDIR)' && $(CVS) -d $(gnuweb-repo) co '$(gnuweb-dir)'; }
+
+gendocs: update-gnuweb update-makeweb
+	cp $(GNULIBDIR)/doc/gendocs_template doc
+	cd doc \
+	  && rm -rf doc/manual \
+	  && $(GNULIBDIR)/build-aux/gendocs.sh --email '$(BUGLIST)' \
+		make 'GNU Make Manual'
+	find '$(MAKEWEBDIR)'/manual \( -name CVS -prune \) -o \( -name '[!.]*' -type f -exec rm -f '{}' \; \)
+	cp -r doc/manual '$(MAKEWEBDIR)'
+	@echo 'Status of $(MAKEWEBDIR) repo:' && cd '$(MAKEWEBDIR)' \
+	    && cvs -q -n update | grep -v '^M '
+	@echo '- cvs add <new files>' \
+	    && echo '- cvs remove <deleted files>' \
+	    && echo '- cvs commit' \
+	    && echo '- cvs tag make-$(subst .,-,$(VERSION))'
+
+
+## --------------------------------------------- ##
+## Submitting Coverity cov-build results to Scan ##
+## --------------------------------------------- ##
+
+# Note you must have set COVERITY_TOKEN and COVERITY_EMAIL properly
+# to submit results.  COVERITY_PATH can be set to the root of the
+# cov-build tools if it's not already on your PATH.
+
+COV_BUILD_FILE := cov-build.tgz
+
+.PHONY: cov-build cov-submit
+
+cov-build: $(COV_BUILD_FILE)
+
+$(COV_BUILD_FILE): $(filter %.c %.h,$(DISTFILES))
+	$(MAKE) distdir
+	@echo "Running Coverity cov-build"
+	rm -rf '$(distdir)'/_build
+	mkdir '$(distdir)'/_build
+	cd '$(distdir)'/_build \
+	    && ../configure --srcdir=.. \
+		$(AM_DISTCHECK_CONFIGURE_FLAGS) $(DISTCHECK_CONFIGURE_FLAGS) \
+		CFLAGS='$(AM_CFLAGS)'
+	PATH="$${COVERITY_PATH:+$$COVERITY_PATH/bin:}$$PATH"; \
+	    cd '$(distdir)'/_build \
+		&& cov-build --dir cov-int ./build.sh
+	rm -f '$@'
+	(cd '$(distdir)'/_build && tar czf - cov-int) > '$@'
+
+cov-submit: $(COV_BUILD_FILE)-submitted
+
+$(COV_BUILD_FILE)-submitted: $(COV_BUILD_FILE)
+	@[ -n "$(COVERITY_TOKEN)" ] || { echo 'COVERITY_TOKEN not set'; exit 1; }
+	@[ -n "$(COVERITY_EMAIL)" ] || { echo 'COVERITY_EMAIL not set'; exit 1; }
+	rm -f '$@'
+	case '$(VERSION)' in \
+	    (*.*.9*) type="daily build"; ext=".$$(date +%Y%m%d)" ;; \
+	    (*)      type="release"; ext= ;; \
+	esac; \
+	curl --form token='$(COVERITY_TOKEN)' \
+	     --form email='$(COVERITY_EMAIL)' \
+	     --form file='@$<' \
+	     --form version="$(VERSION)$$ext" \
+	     --form description="GNU make $$type" \
+	     'https://scan.coverity.com/builds?project=gmake'
+	cp '$<' '$@'
+
+
+## ------------------------- ##
+## Make release targets.     ##
+## ------------------------- ##
+
+.PHONY: tag-release
+tag-release:
+	case '$(VERSION)' in \
+	    (*.*.9*) message=" candidate" ;; \
+	    (*)      message= ;; \
+	esac; \
+	$(GIT) tag -m "GNU Make release$$message $(VERSION)" -u '$(GPG_KEYID)' '$(VERSION)'
+
+
+## ------------------------- ##
+## GNU FTP upload artifacts. ##
+## ------------------------- ##
+
+# This target creates the upload artifacts.
+# Sign it with my key.  If you don't have my key/passphrase then sorry,
+# you're SOL! :)
+
+GPG = gpg
+GPGFLAGS = -u $(GPG_KEYID)
+
+DIST_ARCHIVES_SIG = $(addsuffix .sig,$(DIST_ARCHIVES))
+DIST_ARCHIVES_DIRECTIVE = $(addsuffix .directive.asc,$(DIST_ARCHIVES))
+
+# A simple rule to test signing, etc.
+.PHONY: distsign
+distsign: $(DIST_ARCHIVES_SIG) $(DIST_ARCHIVES_DIRECTIVE)
+
+%.sig : %
+	@echo "Signing file '$<':"
+	$(GPG) $(GPGFLAGS) -o "$@" -b "$<"
+
+%.directive.asc: %
+	@echo "Creating signed directive file '$@':"
+	@( \
+	   echo 'version: 1.2'; \
+	   echo 'directory: make'; \
+	   echo 'filename: $*'; \
+	   echo 'comment: Official upload of GNU make version $(VERSION)'; \
+	 ) > "$*.directive"
+	$(GPG) $(GPGFLAGS) -o "$@" --clearsign "$*.directive"
+	@rm -f "$*.directive"
+
+# Upload the artifacts
+
+FTPPUT = ncftpput
+gnu-upload-host = ftp-upload.gnu.org
+gnu-upload-dir  = /incoming
+
+
+UPLOADS = upload-alpha upload-ftp
+.PHONY: $(UPLOADS)
+$(UPLOADS): $(DIST_ARCHIVES) $(DIST_ARCHIVES_SIG) $(DIST_ARCHIVES_DIRECTIVE)
+	$(FTPPUT) "$(gnu-upload-host)" "$(gnu-upload-dir)/$(@:upload-%=%)" $^
+
+
+# Rebuild Makefile.in if this file is modifed.
+Makefile.in: maintMakefile
+
+# Copyright (C) 1997-2019 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.

make-gdb.py

@@ -0,0 +1,175 @@
+import re
+
+import gdb #pylint: disable=import-error
+import gdb.printing #pylint: disable=import-error
+
+# Memoize types we commonly use
+_TYPES = {}
+def getType(tname):
+    global _TYPES
+    if tname not in _TYPES:
+        tn = tname.rstrip('*')
+        if tn not in _TYPES:
+            _TYPES[tn] = gdb.lookup_type(tn)
+        while tn != tname:
+            # Want a pointer type
+            t = tn
+            tn += '*'
+            _TYPES[tn] = _TYPES[t].pointer()
+    return _TYPES[tname]
+
+class ShowArgv(gdb.Function):
+    """Return the pretty-print of a null-terminated array of strings
+
+    Argument:
+        A char** where the last one is NULL (e.g., argv)
+    """
+
+    def __init__(self):
+        gdb.Function.__init__(self, "showargv")
+
+    def invoke(self, argv):
+        str = '['
+        i = 0
+        while argv[i] != 0:
+            if i > 0:
+                str += ', '
+            str += argv[i].string()
+            i += 1
+        str += ']'
+        return str
+
+ShowArgv()
+
+
+class FileLocation(object):
+    """Print a file location"""
+
+    def __init__(self, val):
+        self.val = val
+
+    def to_string(self):
+        if long(self.val['filenm']):
+            return "%s:%d" % (str(self.val['filenm']), self.val['lineno'])
+        return ''
+
+class VariablePrinter(object):
+    """Print a struct variable"""
+
+    def __init__(self, val):
+        self.val = val
+
+    def to_string(self):
+        if self.val['append']:
+            a = '+='
+        elif self.val['conditional']:
+            a = '?='
+        else:
+            a = '='
+        flags = []
+        s = str(self.val['flavor'])
+        if s != 'f_bogus':
+            flags.append(s)
+        s = str(self.val['origin'])
+        if s != 'o_default':
+            flags.append(s)
+        s = str(self.val['export'])
+        if s != 'v_default':
+            flags.append(s)
+        return '%s[%s]: "%s" %s "%s"' % (
+            self.val['fileinfo'], ','.join(flags),
+            self.val['name'].string(), a, self.val['value'].string())
+
+class HashTablePrinter(object):
+    """Manage a hash table."""
+
+    DELITEM = None
+
+    def __init__(self, val):
+        self.val = val
+
+    def to_string(self):
+        return "size=%d, capacity=%d, empty=%d, collisions=%d, rehashes=%d" % (
+            self.val['ht_size'], self.val['ht_capacity'],
+            self.val['ht_empty_slots'], self.val['ht_collisions'],
+            self.val['ht_rehashes'])
+
+    def children(self):
+        for (i, v) in self.iterator():
+            nm = '[%d] ' % i
+            yield (nm, i)
+            yield (nm, v)
+
+    def iterator(self):
+        if HashTablePrinter.DELITEM is None:
+            HashTablePrinter.DELITEM = gdb.lookup_global_symbol('hash_deleted_item').value()
+        lst = self.val['ht_vec']
+        for i in xrange(0, self.val['ht_size']):
+            v = lst[i]
+            if long(v) != 0 and v != HashTablePrinter.DELITEM:
+                yield (i, v)
+
+    def display_hint(self):
+        return 'map'
+
+class VariableSetPrinter(object):
+    """Print a variable_set"""
+
+    def __init__(self, val):
+        self.tbl = HashTablePrinter(val['table'])
+
+    def to_string(self):
+        return self.tbl.to_string()
+
+    def children(self):
+        for (i, v) in self.tbl.iterator():
+            ptr = v.cast(getType('struct variable*'))
+            nm = '[%d] ' % (i)
+            yield (nm, ptr)
+            yield (nm, str(ptr.dereference()))
+
+    def display_hint(self):
+        return 'map'
+
+class VariableSetListPrinter(object):
+    """Print a variable_set_list"""
+
+    GLOBALSET = None
+
+    def __init__(self, val):
+        self.val = val
+
+    def to_string(self):
+        return str(self.val.address)
+
+    def children(self):
+        if VariableSetListPrinter.GLOBALSET is None:
+            block = gdb.lookup_global_symbol('init_hash_global_variable_set').symtab.static_block()
+            VariableSetListPrinter.GLOBALSET = gdb.lookup_symbol('global_variable_set', block)[0].value().address
+        ptr = self.val.address
+        i = 0
+        while long(ptr) != 0:
+            nm = '[%d] ' % (i)
+            yield (nm, ptr['set'])
+            if long(ptr['set']) == long(VariableSetListPrinter.GLOBALSET):
+                yield (nm, "global_variable_set")
+            else:
+                yield (nm, str(ptr['set'].dereference()))
+            i += 1
+            ptr = ptr['next']
+
+    def display_hint(self):
+        return 'map'
+
+def build_pretty_printer():
+    pp = gdb.printing.RegexpCollectionPrettyPrinter("gnumake")
+    pp.add_printer('floc', r'^floc$', FileLocation)
+    pp.add_printer('variable', r'^variable$', VariablePrinter)
+    pp.add_printer('hashtable', r'^hash_table$', HashTablePrinter)
+    pp.add_printer('variableset', r'^variable_set$', VariableSetPrinter)
+    pp.add_printer('variablesetlist', r'^variable_set_list$', VariableSetListPrinter)
+    return pp
+
+# Use replace=True so we can re-source this file
+gdb.printing.register_pretty_printer(gdb.current_objfile(),
+                                     build_pretty_printer(), replace=True)

makefile.com

@@ -0,0 +1,171 @@
+$!
+$! Makefile.com - builds GNU Make for VMS
+$!
+$! P1 = LIST will provide compiler listings.
+$! P2 = DEBUG will build an image with debug information
+$! P3 = WALL will enable all warning messages (some are suppressed since
+$!      one macro intentionally causes an error condition)
+$!
+$! In case of problems with the install you might contact me at
+$! zinser@decus.de (preferred) or zinser@sysdev.deutsche-boerse.com
+$
+$! hb
+$! But don't ask Martin Zinser about the lines, I added/changed.
+$! In case of an error do some cleanup
+$ on error then $ goto cleanup
+$! in case somebody set up her/his own symbol for cc
+$ set symbol/scope=(nolocal,noglobal)
+$!
+$! Just some general constants...
+$!
+$ true  = 1
+$ false = 0
+$ tmpnam = "temp_" + f$getjpi("","pid")
+$ tt = tmpnam + ".txt"
+$ tc = tmpnam + ".c"
+$!
+$! Look for the compiler used
+$!
+$ lval = ""
+$ if f$search("SYS$SYSTEM:DECC$COMPILER.EXE").eqs.""
+$  then
+$   if f$trnlnm("SYS").eqs."" then def/nolog sys sys$library:
+$   ccopt = ""
+$  else
+$   ccopt = "/decc/prefix=(all,except=(globfree,glob))"
+$   if f$trnlnm("SYS").eqs.""
+$    then
+$     if f$trnlnm("DECC$LIBRARY_INCLUDE").nes.""
+$      then
+$       define sys decc$library_include:
+$      else
+$       if f$search("SYS$COMMON:[DECC$LIB.REFERENCE]DECC$RTLDEF.DIR").nes."" -
+           then lval = "SYS$COMMON:[DECC$LIB.REFERENCE.DECC$RTLDEF],"
+$       if f$search("SYS$COMMON:[DECC$LIB.REFERENCE]SYS$STARLET_C.DIR").nes."" -
+           then lval = lval+"SYS$COMMON:[DECC$LIB.REFERENCE.SYS$STARLET_C],"
+$       lval=lval+"SYS$LIBRARY:"
+$       define sys 'lval
+$      endif
+$   endif
+$ endif
+$!
+$!
+$ if (p1 .eqs. "LIST")
+$ then
+$   ccopt = ccopt + "/list/show=(expan,inclu)"
+$ endif
+$!
+$! Should we build a debug image
+$!
+$ if (p2.eqs."DEBUG")
+$  then
+$   ccopt = ccopt + "/noopt/debug"
+$   lopt = "/debug"
+$ else
+$   lopt = ""
+$ endif
+$!
+$! Do we want to see all warnings
+$!
+$ if (p3.nes."WALL")
+$ then
+$   gosub check_cc_qual
+$ endif
+$ filelist = "[.src]ar [.src]arscan [.src]commands [.src]default [.src]dir " + -
+             "[.src]expand [.src]file [.src]function [.src]guile " + -
+             "[.src]hash [.src]implicit [.src]job [.src]load [.src]main " + -
+             "[.src]misc [.src]read [.src]remake [.src]remote-stub " + -
+             "[.src]rule [.src]output [.src]signame [.src]variable " + -
+             "[.src]version [.src]strcache [.src]vpath " + -
+             "[.src]vmsfunctions [.src]vmsify [.src]vms_progname " + -
+             "[.src]vms_exit [.src]vms_export_symbol " + -
+             "[.lib]alloca [.lib]fnmatch [.lib]glob [.src]getopt1 [.src]getopt"
+$!
+$ copy [.src]config.h-vms [.src]config.h
+$ copy [.lib]fnmatch.in.h [.lib]fnmatch.h
+$ copy [.lib]glob.in.h [.lib]glob.h
+$ n=0
+$ open/write optf make.opt
+$ loop:
+$ cfile = f$elem(n," ",filelist)
+$ if cfile .eqs. " " then goto linkit
+$ write sys$output "Compiling ''cfile'..."
+$ call compileit 'cfile'
+$ n = n + 1
+$ goto loop
+$ linkit:
+$ close optf
+$ link/exe=make make.opt/opt'lopt
+$ goto cleanup
+$
+$ cleanup:
+$ if f$trnlnm("SYS").nes."" then $ deassign sys
+$ if f$trnlnm("OPTF").nes."" then $ close optf
+$ if f$search("make.opt").nes."" then $ del make.opt;*
+$ exit
+$!
+$!-----------------------------------------------------------------------------
+$!
+$! Check if this is a define relating to the properties of the C/C++
+$! compiler
+$!
+$CHECK_CC_QUAL:
+$ open/write tmpc 'tc
+$ ccqual = "/warn=(disable=questcompare)"
+$ write tmpc "#include <stdio.h>"
+$ write tmpc "unsigned int i = 1;"
+$ write tmpc "int main(){"
+$ write tmpc "if (i < 0){printf(""Mission impossible\n"");}}"
+$ close tmpc
+$ gosub cc_qual_check
+$ return
+$!
+$!-----------------------------------------------------------------------------
+$!
+$! Check for properties of C/C++ compiler
+$!
+$CC_QUAL_CHECK:
+$ cc_qual = false
+$ set message/nofac/noident/nosever/notext
+$ cc 'ccqual' 'tmpnam'
+$ if $status then cc_qual = true
+$ set message/fac/ident/sever/text
+$ delete/nolog 'tmpnam'.*;*
+$ if cc_qual then ccopt = ccopt + ccqual
+$ return
+$!-----------------------------------------------------------------------------
+$!
+$ compileit : subroutine
+$ ploc = f$locate("]",p1)
+$! filnam = p1
+$ if ploc .lt. f$length(p1)
+$ then
+$   objdir = f$extract(0, ploc+1, p1)
+$   write optf p1
+$ else
+$   objdir := []
+$   write optf objdir+p1
+$ endif
+$ cc'ccopt'/nested=none/include=([],[.src],[.lib])/obj='objdir' -
+  /define=("allocated_variable_expand_for_file=alloc_var_expand_for_file",-
+  "unlink=remove","HAVE_CONFIG_H","VMS") -
+  'p1'
+$ exit
+$ endsubroutine : compileit
+$!
+$!-----------------------------------------------------------------------------
+$!Copyright (C) 1996-2019 Free Software Foundation, Inc.
+$!This file is part of GNU Make.
+$!
+$!GNU Make is free software; you can redistribute it and/or modify it under
+$!the terms of the GNU General Public License as published by the Free Software
+$!Foundation; either version 3 of the License, or (at your option) any later
+$!version.
+$!
+$!GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+$!WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+$!FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+$!details.
+$!
+$!You should have received a copy of the GNU General Public License along with
+$!this program.  If not, see <http://www.gnu.org/licenses/>.

mk/Amiga.mk

@@ -0,0 +1,45 @@
+# GNU -*-Makefile-*- to build GNU make on Amiga
+#
+# Amiga overrides for use with Basic.mk.
+#
+# Copyright (C) 2017-2019 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+CC = sc
+LD = $(CC) Link
+
+MKDIR.cmd = makedir $1
+RM.cmd = delete $1
+CP.cmd = copy $1 To $2
+
+CPPFLAGS =
+CFLAGS =
+LDFLAGS =
+
+prog_SOURCES += $(alloca_SOURCES) $(loadavg_SOURCES) $(glob_SOURCES) $(amiga_SOURCES)
+
+BUILT_SOURCES += $(lib)alloca.h $(lib)fnmatch.h $(lib)glob.h
+
+extra_CPPFLAGS = IDir $(OUTDIR)src IDir $(SRCDIR)/src IDir $(OUTDIR)lib IDir $(SRCDIR)/lib
+
+C_SOURCE =
+OUTPUT_OPTION =
+LDFLAGS = From LIB:cres.o
+LDLIBS = Lib LIB:sc.lib LIB:amiga.lib
+LINK_OUTPUT = To $@
+
+$(OUTDIR)src/config.h: $(SRCDIR)/src/config.ami
+	$(call CP.cmd,$<,$@)

mk/Posix.mk.in

@@ -0,0 +1,28 @@
+# GNU -*-Makefile-*- to build GNU make on POSIX systems
+#
+# POSIX overrides for use with Basic.mk.
+#
+# Copyright (C) 2017-2019 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Very little is needed here since the default Basic.mk assumes POSIX
+
+prog_SOURCES += $(posix_SOURCES)
+
+extra_CPPFLAGS += @GUILE_CFLAGS@
+extra_LDFLAGS += @AM_LDFLAGS@
+LDLIBS += @LIBOBJS@ @gl_LIBOBS@ @ALLOCA@
+LDLIBS += @GUILE_LIBS@ @GETLOADAVG_LIBS@ @LIBINTL@ @LIBS@

mk/VMS.mk

@@ -0,0 +1,97 @@
+# GNU -*-Makefile-*- to build GNU make on VMS
+#
+# VMS overrides for use with Basic.mk.
+#
+# Copyright (C) 2017-2019 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+src = [.src]
+lib = [.lib]
+SRCDIR = []
+
+OBJEXT = .obj
+EXEEXT = .exe
+
+e =
+s = $e $e
+c = ,
+
+defs = HAVE_CONFIG_H
+
+ifeq ($(CC),cc)
+defs += VMS unlink=remove allocated_variable_expand_for_file=alloc_var_expand_for_file
+else
+defs += GCC_IS_NATIVE
+ifeq ($(ARCH),VAX)
+defs += VAX
+endif
+endif
+
+extra_CPPFLAGS = /define=($(subst $s,$c,$(patsubst %,"%",$(defs))))
+
+cinclude = /nested=none/include=($(src),$(lib))
+ifeq ($(CC),cc)
+cprefix = /prefix=(all,except=(glob,globfree))
+cwarn = /standard=relaxed/warn=(disable=questcompare)
+endif
+
+extra_CFLAGS = $(cinclude)$(cprefix)$(cwarn)
+
+#extra_LDFLAGS = /deb
+extra_LDFLAGS =
+
+# If your system needs extra libraries loaded in, define them here.
+# System V probably need -lPW for alloca.
+# if on vax, uncomment the following line
+#LDLIBS = ,c.opt/opt
+ifeq ($(CC),cc)
+#LDLIBS =,sys$$library:vaxcrtl.olb/lib
+else
+LDLIBS =,gnu_cc_library:libgcc.olb/lib
+endif
+
+# If your system doesn't have alloca, or the one provided is bad,
+# uncomment this
+#ALLOCA = $(alloca_SOURCES)
+
+# If your system doesn't have alloca.h, or the one provided is bad,
+# uncomment this
+#BUILT_SOURCES += $(lib)alloca.h
+
+prog_SOURCES += $(ALLOCA) $(glob_SOURCES) $(vms_SOURCES)
+
+BUILT_SOURCES += $(lib)fnmatch.h $(lib)glob.h
+
+COMPILE.cmd = $(CC) $(extra_CFLAGS)$(CFLAGS)/obj=$@ $(extra_CPPFLAGS)$(CPPFLAGS) $1
+
+LINK.cmd = $(LD)$(extra_LDFLAGS)$(LDFLAGS)/exe=$@ $(subst $s,$c,$1)$(LDLIBS)
+
+# Don't know how to do this
+CHECK.cmd =
+
+MKDIR.cmd = create/dir $1
+RM.cmd = delete $1
+CP.cmd = copy $1 $2
+
+define CLEANSPACE
+	-purge [...]
+	-delete $(PROG);
+	-delete $(src)*.$(OBJEXT);
+endef
+
+
+$(OUTDIR)$(src)config.h: $(SRCDIR)$(src)config.h.W32
+	$(call CP.cmd,$<,$@)

mk/Windows32.mk

@@ -0,0 +1,122 @@
+# GNU -*-Makefile-*- to build GNU make on Windows
+#
+# Windows overrides for use with Basic.mk.
+#
+# Copyright (C) 2017-2019 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# TARGET_TYPE can be either "release" or "debug"
+TARGET_TYPE = release
+
+# TOOLCHAIN can be either "msvc" or "gcc"
+TOOLCHAIN = msvc
+
+# Translate a POSIX path into a Windows path.  Don't bother with drives.
+# Used only inside recipes, with DOS/CMD tools that require it.
+P2W = $(subst /,\,$1)
+
+prog_SOURCES += $(loadavg_SOURCES) $(glob_SOURCES) $(w32_SOURCES)
+
+BUILT_SOURCES += $(lib)alloca.h $(lib)fnmatch.h $(lib)glob.h
+
+w32_LIBS = kernel32 user32 gdi32 winspool comdlg32 advapi32 shell32 ole32 \
+	   oleaut32 uuid odbc32 odbccp32
+
+CPPFLAGS =
+CFLAGS =
+LDFLAGS =
+
+# --- Visual Studio
+msvc_CC = cl.exe
+msvc_LD = link.exe
+
+msvc_CPPFLAGS = /DHAVE_CONFIG_H /DWINDOWS32 /DWIN32 /D_CONSOLE
+msvc_CPPFLAGS += /I$(OUTDIR)src /I$(SRCDIR)/src /I$(SRCDIR)/src/w32/include /I$(OUTDIR)lib /I$(SRCDIR)/lib
+
+msvc_CFLAGS = /nologo /MT /W4 /EHsc
+msvc_CFLAGS += /FR$(OUTDIR) /Fp$(BASE_PROG).pch /Fd$(BASE_PROG).pdb
+
+msvc_LDFLAGS = /nologo /SUBSYSTEM:console /PDB:$(BASE_PROG).pdb
+
+msvc_LDLIBS = $(addsuffix .lib,$(w32_LIBS))
+
+msvc_C_SOURCE = /c
+msvc_OUTPUT_OPTION = /Fo$@
+msvc_LINK_OUTPUT = /OUT:$@
+
+release_msvc_OUTDIR = ./WinRel/
+release_msvc_CPPFLAGS = /D NDEBUG
+release_msvc_CFLAGS = /O2
+
+debug_msvc_OUTDIR = ./WinDebug/
+debug_msvc_CPPFLAGS = /D _DEBUG
+debug_msvc_CFLAGS = /Zi /Od
+debug_msvc_LDFLAGS = /DEBUG
+
+# --- GCC
+gcc_CC = gcc
+gcc_LD = $(gcc_CC)
+
+release_gcc_OUTDIR = ./GccRel/
+debug_gcc_OUTDIR = ./GccDebug/
+
+gcc_CPPFLAGS = -DHAVE_CONFIG_H -I$(OUTDIR)src -I$(SRCDIR)/src -I$(SRCDIR)/src/w32/include -I$(OUTDIR)lib -I$(SRCDIR)/lib
+gcc_CFLAGS = -mthreads -Wall -std=gnu99 -gdwarf-2 -g3
+gcc_LDFLAGS = -mthreads -gdwarf-2 -g3
+gcc_LDLIBS = $(addprefix -l,$(w32_libs))
+
+gcc_C_SOURCE = -c
+gcc_OUTPUT_OPTION = -o $@
+gcc_LINK_OUTPUT = -o $@
+
+debug_gcc_CFLAGS = -O0
+release_gcc_CFLAGS = -O2
+
+# ---
+
+LINK.cmd = $(LD) $(extra_LDFLAGS) $(LDFLAGS) $(TARGET_ARCH) $1 $(LDLIBS) $(LINK_OUTPUT)
+
+CHECK.cmd = cmd /c cd tests \& .\run_make_tests.bat -make ../$(PROG)
+
+MKDIR.cmd = cmd /c mkdir $(call P2W,$1)
+RM.cmd = cmd /c del /F /Q $(call P2W,$1)
+CP.cmd = cmd /c copy /Y $(call P2W,$1 $2)
+
+CC = $($(TOOLCHAIN)_CC)
+LD = $($(TOOLCHAIN)_LD)
+
+C_SOURCE = $($(TOOLCHAIN)_C_SOURCE)
+OUTPUT_OPTION = $($(TOOLCHAIN)_OUTPUT_OPTION)
+LINK_OUTPUT = $($(TOOLCHAIN)_LINK_OUTPUT)
+
+OUTDIR = $($(TARGET_TYPE)_$(TOOLCHAIN)_OUTDIR)
+
+OBJEXT	= obj
+EXEEXT	= .exe
+
+_CUSTOM = $($(TOOLCHAIN)_$1) $($(TARGET_TYPE)_$1) $($(TARGET_TYPE)_$(TOOLCHAIN)_$1)
+
+# I'm not sure why this builds gnumake rather than make...?
+PROG = $(OUTDIR)gnumake$(EXEEXT)
+BASE_PROG = $(basename $(PROG))
+
+extra_CPPFLAGS = $(call _CUSTOM,CPPFLAGS)
+extra_CFLAGS = $(call _CUSTOM,CFLAGS)
+extra_LDFLAGS = $(call _CUSTOM,LDFLAGS)
+LDLIBS = $(call _CUSTOM,LDLIBS)
+
+$(OUTDIR)src/config.h: $(SRCDIR)/src/config.h.W32
+	$(call CP.cmd,$<,$@)

mk/msdosdjgpp.mk

@@ -0,0 +1,43 @@
+# GNU -*-Makefile-*- to build GNU make on MS-DOS with DJGPP
+#
+# MS-DOS overrides for use with Basic.mk.
+#
+# Copyright (C) 2017-2019 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+OBJEXT = o
+EXEEXT = .exe
+
+CC = gcc
+
+# Translate a POSIX path into a Windows path.  Don't bother with drives.
+# Used only inside recipes, with DOS/CMD tools that require it.
+P2W = $(subst /,\,$1)
+
+prog_SOURCES += $(loadavg_SOURCES) $(glob_SOURCES)
+
+BUILT_SOURCES += $(lib)alloca.h $(lib)fnmatch.h $(lib)glob.h
+
+INCLUDEDIR = c:/djgpp/include
+LIBDIR = c:/djgpp/lib
+LOCALEDIR = c:/djgpp/share
+
+MKDIR.cmd = command.com /c mkdir $(call P2W,$1)
+RM.cmd = command.com /c del /F /Q $(call P2W,$1)
+CP.cmd = command.com /c copy /Y $(call P2W,$1 $2)
+
+$(OUTDIR)src/config.h: $(SRCDIR)/src/configh.dos
+	$(call CP.cmd,$<,$@)

po/.gitignore

@@ -0,0 +1,4 @@
+*
+!.gitignore
+!LINGUAS
+!POTFILES.in

po/LINGUAS

@@ -0,0 +1,29 @@
+be
+bg
+cs
+da
+de
+es
+fi
+fr
+ga
+gl
+he
+hr
+id
+it
+ja
+ko
+lt
+nl
+pl
+pt
+pt_BR
+ru
+sr
+sv
+tr
+uk
+vi
+zh_CN
+zh_TW

po/POTFILES.in

@@ -0,0 +1,47 @@
+# List of source files containing translatable strings.
+# Copyright (C) 2000-2019 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.
+
+src/ar.c
+src/arscan.c
+src/commands.c
+src/dir.c
+src/expand.c
+src/file.c
+src/function.c
+src/getopt.c
+src/guile.c
+src/hash.c
+src/implicit.c
+src/job.c
+src/load.c
+src/main.c
+src/misc.c
+src/output.c
+src/output.h
+src/posixos.c
+src/read.c
+src/remake.c
+src/remote-cstms.c
+src/rule.c
+src/signame.c
+src/strcache.c
+src/variable.c
+src/variable.h
+src/vmsfunctions.c
+src/vmsjobs.c
+src/vpath.c
+src/w32/w32os.c

prepare_vms.com

@@ -0,0 +1,59 @@
+$!
+$! prepare_vms.com  - Build config.h-vms from master on VMS.
+$!
+$! This is used for building off the master instead of a release tarball.
+$!
+$!
+$!
+$! First try ODS-5, Pathworks V6 or UNZIP name.
+$!
+$ config_template = f$search("sys$disk:[]config*h-vms.template")
+$ if config_template .eqs. ""
+$ then
+$!
+$!  Try NFS, VMStar, or Pathworks V5 ODS-2 encoded name.
+$!
+$   config_template = f$search("sys$disk:[]config.h-vms*template")
+$   if config_template .eqs. ""
+$   then
+$       write sys$output "Could not find config.h-vms*template!"
+$       exit 44
+$   endif
+$ endif
+$ config_template_file = f$parse(config_template,,,"name")
+$ config_template_type = f$parse(config_template,,,"type")
+$ config_template = "sys$disk:[]" + config_template_file + config_template_type
+$!
+$!
+$! Pull the package and version from configure.ac
+$!
+$ open/read ac_file sys$disk:[]configure.ac
+$ac_read_loop:
+$ read ac_file/end=ac_read_loop_end line_in
+$ key = f$extract(0, 7, line_in)
+$ if key .nes. "AC_INIT" then goto ac_read_loop
+$ package = f$element (1,"[",line_in)
+$ package = f$element (0,"]",package)
+$ version = f$element (2,"[",line_in)
+$ version = f$element (0,"]",version)
+$ac_read_loop_end:
+$ close ac_file
+$!
+$ if (package .eqs. "") .or. (version .eqs. "")
+$ then
+$    write sys$output "Unable to determine package and/or version!"
+$    exit 44
+$ endif
+$!
+$!
+$ outfile = "sys$disk:[]config.h-vms"
+$!
+$! Note the pipe command is close to the length of 255, which is the
+$! maximum token length prior to VMS V8.2:
+$! %DCL-W-TKNOVF, command element is too long - shorten
+$ pipe (write sys$output "sub/%PACKAGE%/''package'/WHOLE/NOTYPE" ;-
+        write sys$output "sub/%VERSION%/''version'/WHOLE/NOTYPE" ;-
+        write sys$output "exit") |-
+       edit/edt 'config_template'/out='outfile'/command=sys$pipe >nla0:
+$!
+$ write sys$output package, ", version: ", version, " prepared for VMS"

scripts/copyright-update

@@ -0,0 +1,63 @@
+#!/bin/sh
+#
+# Copyright (C) 2014-2019 Free Software Foundation, Inc.
+# This file is part of GNU Make.
+#
+# Update GNU make copyrights using gnulib update-copyright
+
+EXCLUDE='^\(\.[a-z].*\|.*/\.[a-z].*\|.*COPYING\|src/hash\.[ch]\|ChangeLog.*\|.*/ChangeLog.*\|INSTALL\|doc/make\.texi\|bootstrap\)$'
+
+update=${UPDATE_COPYRIGHT:-${GNULIB_SRCDIR:-../../gnulib}/build-aux/update-copyright}
+
+die () { echo "$*"; exit 1; }
+
+getfiles () {
+    git ls-files | grep -v "$EXCLUDE"
+}
+
+run () {
+    cmd=$(command -v "$update") || die "Cannot locate update-copyright ($update)"
+    [ -x "$cmd" ] || die "Cannot locate update-copyright ($update)"
+
+    force=false
+
+    case $1 in
+        (-v) getfiles | sort; exit 0 ;;
+        (-f) force=true ;;
+        (--) : ;;
+        (-*) echo "usage: $0 [-v]"; exit 1 ;;
+    esac
+
+    if $force; then
+        : just do it
+    elif [ ! -f src/makeint.h ]; then
+        die "Run in the root of the GNU make workspace"
+    elif [ -f configure ]; then
+        die "Run in a clean workspace (git clean -fdX)"
+    fi
+
+    # We use intervals
+    export UPDATE_COPYRIGHT_USE_INTERVALS=1
+
+    "$cmd" $(getfiles)
+
+    echo "*** Update doc/make.texi copyright by hand!"
+    echo "*** Update src/main.c:print_version() copyright by hand!"
+
+    exit 0
+}
+
+run "$@"
+
+# GNU Make is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 3 of the License, or (at your option) any later
+# version.
+#
+# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program.  If not, see <http://www.gnu.org/licenses/>.

src/amiga.c

@@ -0,0 +1,117 @@
+/* Running commands on Amiga
+Copyright (C) 1995-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "variable.h"
+#include "amiga.h"
+#include <assert.h>
+#include <exec/memory.h>
+#include <dos/dostags.h>
+#include <proto/exec.h>
+#include <proto/dos.h>
+
+static const char Amiga_version[] = "$VER: Make 3.74.3 (12.05.96) \n"
+                    "Amiga Port by A. Digulla (digulla@home.lake.de)";
+
+int
+MyExecute (char **argv)
+{
+    char * buffer, * ptr;
+    char ** aptr;
+    int len = 0;
+    int status;
+
+    for (aptr=argv; *aptr; aptr++)
+    {
+        len += strlen (*aptr) + 4;
+    }
+
+    buffer = AllocMem (len, MEMF_ANY);
+
+    if (!buffer)
+      O (fatal, NILF, "MyExecute: Cannot allocate space for calling a command\n");
+
+    ptr = buffer;
+
+    for (aptr=argv; *aptr; aptr++)
+    {
+        if (((*aptr)[0] == ';' && !(*aptr)[1]))
+        {
+            *ptr ++ = '"';
+            strcpy (ptr, *aptr);
+            ptr += strlen (ptr);
+            *ptr ++ = '"';
+        }
+        else if ((*aptr)[0] == '@' && (*aptr)[1] == '@' && !(*aptr)[2])
+        {
+            *ptr ++ = '\n';
+            continue;
+        }
+        else
+        {
+            strcpy (ptr, *aptr);
+            ptr += strlen (ptr);
+        }
+        *ptr ++ = ' ';
+        *ptr = 0;
+    }
+
+    ptr[-1] = '\n';
+
+    status = SystemTags (buffer,
+        SYS_UserShell, TRUE,
+        TAG_END);
+
+    FreeMem (buffer, len);
+
+    if (SetSignal (0L,0L) & SIGBREAKF_CTRL_C)
+        status = 20;
+
+    /* Warnings don't count */
+    if (status == 5)
+        status = 0;
+
+    return status;
+}
+
+char *
+wildcard_expansion (char *wc, char *o)
+{
+#   define PATH_SIZE    1024
+    struct AnchorPath * apath;
+
+    if ( (apath = AllocMem (sizeof (struct AnchorPath) + PATH_SIZE,
+            MEMF_CLEAR))
+        )
+    {
+        apath->ap_Strlen = PATH_SIZE;
+
+        if (MatchFirst (wc, apath) == 0)
+        {
+            do
+            {
+                o = variable_buffer_output (o, apath->ap_Buf,
+                        strlen (apath->ap_Buf));
+                o = variable_buffer_output (o, " ",1);
+            } while (MatchNext (apath) == 0);
+        }
+
+        MatchEnd (apath);
+        FreeMem (apath, sizeof (struct AnchorPath) + PATH_SIZE);
+    }
+
+    return o;
+}

src/amiga.h

@@ -0,0 +1,18 @@
+/* Definitions for amiga specific things
+Copyright (C) 1995-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+int MyExecute (char ** argv);
+char * wildcard_expansion (char * wc, char * o);

src/ar.c

@@ -0,0 +1,328 @@
+/* Interface to 'ar' archives for GNU Make.
+Copyright (C) 1988-2019 Free Software Foundation, Inc.
+
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#ifndef NO_ARCHIVES
+
+#include "filedef.h"
+#include "dep.h"
+#include <fnmatch.h>
+
+/* Return nonzero if NAME is an archive-member reference, zero if not.  An
+   archive-member reference is a name like 'lib(member)' where member is a
+   non-empty string.
+   If a name like 'lib((entry))' is used, a fatal error is signaled at
+   the attempt to use this unsupported feature.  */
+
+int
+ar_name (const char *name)
+{
+  const char *p = strchr (name, '(');
+  const char *end;
+
+  if (p == 0 || p == name)
+    return 0;
+
+  end = p + strlen (p) - 1;
+  if (*end != ')' || end == p + 1)
+    return 0;
+
+  if (p[1] == '(' && end[-1] == ')')
+    OS (fatal, NILF, _("attempt to use unsupported feature: '%s'"), name);
+
+  return 1;
+}
+
+
+/* Parse the archive-member reference NAME into the archive and member names.
+   Creates one allocated string containing both names, pointed to by ARNAME_P.
+   MEMNAME_P points to the member.  */
+
+void
+ar_parse_name (const char *name, char **arname_p, char **memname_p)
+{
+  char *p;
+
+  *arname_p = xstrdup (name);
+  p = strchr (*arname_p, '(');
+  *(p++) = '\0';
+  p[strlen (p) - 1] = '\0';
+  *memname_p = p;
+}
+
+
+/* This function is called by 'ar_scan' to find which member to look at.  */
+
+/* ARGSUSED */
+static long int
+ar_member_date_1 (int desc UNUSED, const char *mem, int truncated,
+                  long int hdrpos UNUSED, long int datapos UNUSED,
+                  long int size UNUSED, long int date,
+                  int uid UNUSED, int gid UNUSED, unsigned int mode UNUSED,
+                  const void *name)
+{
+  return ar_name_equal (name, mem, truncated) ? date : 0;
+}
+
+/* Return the modtime of NAME.  */
+
+time_t
+ar_member_date (const char *name)
+{
+  char *arname;
+  char *memname;
+  long int val;
+
+  ar_parse_name (name, &arname, &memname);
+
+  /* Make sure we know the modtime of the archive itself because we are
+     likely to be called just before commands to remake a member are run,
+     and they will change the archive itself.
+
+     But we must be careful not to enter_file the archive itself if it does
+     not exist, because pattern_search assumes that files found in the data
+     base exist or can be made.  */
+  {
+    struct file *arfile;
+    arfile = lookup_file (arname);
+    if (arfile == 0 && file_exists_p (arname))
+      arfile = enter_file (strcache_add (arname));
+
+    if (arfile != 0)
+      (void) f_mtime (arfile, 0);
+  }
+
+  val = ar_scan (arname, ar_member_date_1, memname);
+
+  free (arname);
+
+  return (val <= 0 ? (time_t) -1 : (time_t) val);
+}
+
+/* Set the archive-member NAME's modtime to now.  */
+
+#ifdef VMS
+int
+ar_touch (const char *name)
+{
+  O (error, NILF, _("touch archive member is not available on VMS"));
+  return -1;
+}
+#else
+int
+ar_touch (const char *name)
+{
+  char *arname, *memname;
+  int val;
+
+  ar_parse_name (name, &arname, &memname);
+
+  /* Make sure we know the modtime of the archive itself before we
+     touch the member, since this will change the archive modtime.  */
+  {
+    struct file *arfile;
+    arfile = enter_file (strcache_add (arname));
+    f_mtime (arfile, 0);
+  }
+
+  val = 1;
+  switch (ar_member_touch (arname, memname))
+    {
+    case -1:
+      OS (error, NILF, _("touch: Archive '%s' does not exist"), arname);
+      break;
+    case -2:
+      OS (error, NILF, _("touch: '%s' is not a valid archive"), arname);
+      break;
+    case -3:
+      perror_with_name ("touch: ", arname);
+      break;
+    case 1:
+      OSS (error, NILF,
+           _("touch: Member '%s' does not exist in '%s'"), memname, arname);
+      break;
+    case 0:
+      val = 0;
+      break;
+    default:
+      OS (error, NILF,
+          _("touch: Bad return code from ar_member_touch on '%s'"), name);
+    }
+
+  free (arname);
+
+  return val;
+}
+#endif /* !VMS */
+
+/* State of an 'ar_glob' run, passed to 'ar_glob_match'.  */
+
+/* On VMS, (object) modules in libraries do not have suffixes. That is, to
+   find a match for a pattern, the pattern must not have any suffix. So the
+   suffix of the pattern is saved and the pattern is stripped (ar_glob).
+   If there is a match and the match, which is a module name, is added to
+   the chain, the saved suffix is added back to construct a source filename
+   (ar_glob_match). */
+
+struct ar_glob_state
+  {
+    const char *arname;
+    const char *pattern;
+#ifdef VMS
+    char *suffix;
+#endif
+    size_t size;
+    struct nameseq *chain;
+    unsigned int n;
+  };
+
+/* This function is called by 'ar_scan' to match one archive
+   element against the pattern in STATE.  */
+
+static long int
+ar_glob_match (int desc UNUSED, const char *mem, int truncated UNUSED,
+               long int hdrpos UNUSED, long int datapos UNUSED,
+               long int size UNUSED, long int date UNUSED, int uid UNUSED,
+               int gid UNUSED, unsigned int mode UNUSED, const void *arg)
+{
+  struct ar_glob_state *state = (struct ar_glob_state *)arg;
+
+  if (fnmatch (state->pattern, mem, FNM_PATHNAME|FNM_PERIOD) == 0)
+    {
+      /* We have a match.  Add it to the chain.  */
+      struct nameseq *new = xcalloc (state->size);
+#ifdef VMS
+      if (state->suffix)
+        new->name = strcache_add(
+            concat(5, state->arname, "(", mem, state->suffix, ")"));
+      else
+#endif
+        new->name = strcache_add(concat(4, state->arname, "(", mem, ")"));
+      new->next = state->chain;
+      state->chain = new;
+      ++state->n;
+    }
+
+  return 0L;
+}
+
+/* Return nonzero if PATTERN contains any metacharacters.
+   Metacharacters can be quoted with backslashes if QUOTE is nonzero.  */
+static int
+ar_glob_pattern_p (const char *pattern, int quote)
+{
+  const char *p;
+  int opened = 0;
+
+  for (p = pattern; *p != '\0'; ++p)
+    switch (*p)
+      {
+      case '?':
+      case '*':
+        return 1;
+
+      case '\\':
+        if (quote)
+          ++p;
+        break;
+
+      case '[':
+        opened = 1;
+        break;
+
+      case ']':
+        if (opened)
+          return 1;
+        break;
+      }
+
+  return 0;
+}
+
+/* Glob for MEMBER_PATTERN in archive ARNAME.
+   Return a malloc'd chain of matching elements (or nil if none).  */
+
+struct nameseq *
+ar_glob (const char *arname, const char *member_pattern, size_t size)
+{
+  struct ar_glob_state state;
+  struct nameseq *n;
+  const char **names;
+  unsigned int i;
+#ifdef VMS
+  char *vms_member_pattern;
+#endif
+  if (! ar_glob_pattern_p (member_pattern, 1))
+    return 0;
+
+  /* Scan the archive for matches.
+     ar_glob_match will accumulate them in STATE.chain.  */
+  state.arname = arname;
+  state.pattern = member_pattern;
+#ifdef VMS
+    {
+      /* In a copy of the pattern, find the suffix, save it and  remove it from
+         the pattern */
+      char *lastdot;
+      vms_member_pattern = xstrdup(member_pattern);
+      lastdot = strrchr(vms_member_pattern, '.');
+      state.suffix = lastdot;
+      if (lastdot)
+        {
+          state.suffix = xstrdup(lastdot);
+          *lastdot = 0;
+        }
+      state.pattern = vms_member_pattern;
+    }
+#endif
+  state.size = size;
+  state.chain = 0;
+  state.n = 0;
+  ar_scan (arname, ar_glob_match, &state);
+
+#ifdef VMS
+  /* Deallocate any duplicated string */
+  free(vms_member_pattern);
+  if (state.suffix)
+    {
+      free(state.suffix);
+    }
+#endif
+
+  if (state.chain == 0)
+    return 0;
+
+  /* Now put the names into a vector for sorting.  */
+  names = alloca (state.n * sizeof (const char *));
+  i = 0;
+  for (n = state.chain; n != 0; n = n->next)
+    names[i++] = n->name;
+
+  /* Sort them alphabetically.  */
+  /* MSVC erroneously warns without a cast here.  */
+  qsort ((void *)names, i, sizeof (*names), alpha_compare);
+
+  /* Put them back into the chain in the sorted order.  */
+  i = 0;
+  for (n = state.chain; n != 0; n = n->next)
+    n->name = names[i++];
+
+  return state.chain;
+}
+
+#endif  /* Not NO_ARCHIVES.  */

src/arscan.c

@@ -0,0 +1,961 @@
+/* Library function for scanning an archive file.
+Copyright (C) 1987-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#ifdef TEST
+/* Hack, the real error() routine eventually pulls in die from main.c */
+#define error(a, b, c, d)
+#endif
+
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#else
+#include <sys/file.h>
+#endif
+
+#ifndef NO_ARCHIVES
+
+#ifdef VMS
+#include <lbrdef.h>
+#include <mhddef.h>
+#include <credef.h>
+#include <descrip.h>
+#include <ctype.h>
+#include <ssdef.h>
+#include <stsdef.h>
+#include <rmsdef.h>
+
+/* This symbol should be present in lbrdef.h. */
+#ifndef LBR$_HDRTRUNC
+#pragma extern_model save
+#pragma extern_model globalvalue
+extern unsigned int LBR$_HDRTRUNC;
+#pragma extern_model restore
+#endif
+
+#include <unixlib.h>
+#include <lbr$routines.h>
+
+const char *
+vmsify (const char *name, int type);
+
+/* Time conversion from VMS to Unix
+   Conversion from local time (stored in library) to GMT (needed for gmake)
+   Note: The tm_gmtoff element is a VMS extension to the ANSI standard. */
+static time_t
+vms_time_to_unix(void *vms_time)
+{
+  struct tm *tmp;
+  time_t unix_time;
+
+  unix_time = decc$fix_time(vms_time);
+  tmp = localtime(&unix_time);
+  unix_time -= tmp->tm_gmtoff;
+
+  return unix_time;
+}
+
+
+/* VMS library routines need static variables for callback */
+static void *VMS_lib_idx;
+
+static const void *VMS_saved_arg;
+
+static long int (*VMS_function) ();
+
+static long int VMS_function_ret;
+
+
+/* This is a callback procedure for lib$get_index */
+static int
+VMS_get_member_info(struct dsc$descriptor_s *module, unsigned long *rfa)
+{
+  int status, i;
+  const int truncated = 0; /* Member name may be truncated */
+  time_t member_date; /* Member date */
+  char *filename;
+  unsigned int buffer_length; /* Actual buffer length */
+
+  /* Unused constants - Make does not actually use most of these */
+  const int file_desc = -1; /* archive file descriptor for reading the data */
+  const int header_position = 0; /* Header position */
+  const int data_position = 0; /* Data position in file */
+  const int data_size = 0; /* Data size */
+  const int uid = 0; /* member gid */
+  const int gid = 0; /* member gid */
+  const int mode = 0; /* member protection mode */
+  /* End of unused constants */
+
+  static struct dsc$descriptor_s bufdesc =
+    { 0, DSC$K_DTYPE_T, DSC$K_CLASS_S, NULL };
+
+  /* Only need the module definition */
+  struct mhddef *mhd;
+
+  /* If a previous callback is non-zero, just return that status */
+  if (VMS_function_ret)
+    {
+      return SS$_NORMAL;
+    }
+
+  /* lbr_set_module returns more than just the module header. So allocate
+     a buffer which is big enough: the maximum LBR$C_MAXHDRSIZ. That's at
+     least bigger than the size of struct mhddef.
+     If the request is too small, a buffer truncated warning is issued so
+     it can be reissued with a larger buffer.
+     We do not care if the buffer is truncated, so that is still a success. */
+  mhd = xmalloc(LBR$C_MAXHDRSIZ);
+  bufdesc.dsc$a_pointer = (char *) mhd;
+  bufdesc.dsc$w_length = LBR$C_MAXHDRSIZ;
+
+  status = lbr$set_module(&VMS_lib_idx, rfa, &bufdesc, &buffer_length, 0);
+
+  if ((status != LBR$_HDRTRUNC) && !$VMS_STATUS_SUCCESS(status))
+    {
+      ON(error, NILF,
+          _("lbr$set_module() failed to extract module info, status = %d"),
+          status);
+
+      lbr$close(&VMS_lib_idx);
+
+      return status;
+    }
+
+#ifdef TEST
+  /* When testing this code, it is useful to know the length returned */
+  printf ("Input length = %d, actual = %u\n",
+          bufdesc.dsc$w_length, buffer_length);
+#endif
+
+  /* Conversion from VMS time to C time.
+     VMS defectlet - mhddef is sub-optimal, for the time, it has a 32 bit
+     longword, mhd$l_datim, and a 32 bit fill instead of two longwords, or
+     equivalent. */
+  member_date = vms_time_to_unix(&mhd->mhd$l_datim);
+  free(mhd);
+
+  /* Here we have a problem.  The module name on VMS does not have
+     a file type, but the filename pattern in the "VMS_saved_arg"
+     may have one.
+     But only the method being called knows how to interpret the
+     filename pattern.
+     There are currently two different formats being used.
+     This means that we need a VMS specific code in those methods
+     to handle it. */
+  filename = xmalloc(module->dsc$w_length + 1);
+
+  /* TODO: We may need an option to preserve the case of the module
+     For now force the module name to lower case */
+  for (i = 0; i < module->dsc$w_length; i++)
+    filename[i] = _tolower((unsigned char )module->dsc$a_pointer[i]);
+
+  filename[i] = '\0';
+
+  VMS_function_ret = (*VMS_function)(file_desc, filename, truncated,
+      header_position, data_position, data_size, member_date, uid, gid, mode,
+      VMS_saved_arg);
+
+  free(filename);
+  return SS$_NORMAL;
+}
+
+
+/* Takes three arguments ARCHIVE, FUNCTION and ARG.
+
+   Open the archive named ARCHIVE, find its members one by one,
+   and for each one call FUNCTION with the following arguments:
+     archive file descriptor for reading the data,
+     member name,
+     member name might be truncated flag,
+     member header position in file,
+     member data position in file,
+     member data size,
+     member date,
+     member uid,
+     member gid,
+     member protection mode,
+     ARG.
+
+   NOTE: on VMS systems, only name, date, and arg are meaningful!
+
+   The descriptor is poised to read the data of the member
+   when FUNCTION is called.  It does not matter how much
+   data FUNCTION reads.
+
+   If FUNCTION returns nonzero, we immediately return
+   what FUNCTION returned.
+
+   Returns -1 if archive does not exist,
+   Returns -2 if archive has invalid format.
+   Returns 0 if have scanned successfully.  */
+
+long int
+ar_scan (const char *archive, ar_member_func_t function, const void *varg)
+{
+  char *vms_archive;
+
+  static struct dsc$descriptor_s libdesc =
+    { 0, DSC$K_DTYPE_T, DSC$K_CLASS_S, NULL };
+
+  const unsigned long func = LBR$C_READ;
+  const unsigned long type = LBR$C_TYP_UNK;
+  const unsigned long index = 1;
+  unsigned long lib_idx;
+  int status;
+
+  VMS_saved_arg = varg;
+
+  /* Null archive string can show up in test and cause an access violation */
+  if (archive == NULL)
+    {
+      /* Null filenames do not exist */
+      return -1;
+    }
+
+  /* archive path name must be in VMS format */
+  vms_archive = (char *) vmsify(archive, 0);
+
+  status = lbr$ini_control(&VMS_lib_idx, &func, &type, 0);
+
+  if (!$VMS_STATUS_SUCCESS(status))
+    {
+      ON(error, NILF, _("lbr$ini_control() failed with status = %d"), status);
+      return -2;
+    }
+
+  libdesc.dsc$a_pointer = vms_archive;
+  libdesc.dsc$w_length = strlen(vms_archive);
+
+  status = lbr$open(&VMS_lib_idx, &libdesc, 0, NULL, 0, NULL, 0);
+
+  if (!$VMS_STATUS_SUCCESS(status))
+    {
+
+      /* TODO: A library format failure could mean that this is a file
+         generated by the GNU AR utility and in that case, we need to
+         take the UNIX codepath.  This will also take a change to the
+         GNV AR wrapper program. */
+
+      switch (status)
+        {
+      case RMS$_FNF:
+        /* Archive does not exist */
+        return -1;
+      default:
+#ifndef TEST
+        OSN(error, NILF,
+            _("unable to open library '%s' to lookup member status %d"),
+            archive, status);
+#endif
+        /* For library format errors, specification says to return -2 */
+        return -2;
+        }
+    }
+
+  VMS_function = function;
+
+  /* Clear the return status, as we are supposed to stop calling the
+     callback function if it becomes non-zero, and this is a static
+     variable. */
+  VMS_function_ret = 0;
+
+  status = lbr$get_index(&VMS_lib_idx, &index, VMS_get_member_info, NULL, 0);
+
+  lbr$close(&VMS_lib_idx);
+
+  /* Unless a failure occurred in the lbr$ routines, return the
+     the status from the 'function' routine. */
+  if ($VMS_STATUS_SUCCESS(status))
+    {
+      return VMS_function_ret;
+    }
+
+  /* This must be something wrong with the library and an error
+     message should already have been printed. */
+  return -2;
+}
+
+#else /* !VMS */
+
+/* SCO Unix's compiler defines both of these.  */
+#ifdef  M_UNIX
+#undef  M_XENIX
+#endif
+
+/* On the sun386i and in System V rel 3, ar.h defines two different archive
+   formats depending upon whether you have defined PORTAR (normal) or PORT5AR
+   (System V Release 1).  There is no default, one or the other must be defined
+   to have a nonzero value.  */
+
+#if (!defined (PORTAR) || PORTAR == 0) && (!defined (PORT5AR) || PORT5AR == 0)
+#undef  PORTAR
+#ifdef M_XENIX
+/* According to Jim Sievert <jas1@rsvl.unisys.com>, for SCO XENIX defining
+   PORTAR to 1 gets the wrong archive format, and defining it to 0 gets the
+   right one.  */
+#define PORTAR 0
+#else
+#define PORTAR 1
+#endif
+#endif
+
+/* On AIX, define these symbols to be sure to get both archive formats.
+   AIX 4.3 introduced the "big" archive format to support 64-bit object
+   files, so on AIX 4.3 systems we need to support both the "normal" and
+   "big" archive formats.  An archive's format is indicated in the
+   "fl_magic" field of the "FL_HDR" structure.  For a normal archive,
+   this field will be the string defined by the AIAMAG symbol.  For a
+   "big" archive, it will be the string defined by the AIAMAGBIG symbol
+   (at least on AIX it works this way).
+
+   Note: we'll define these symbols regardless of which AIX version
+   we're compiling on, but this is okay since we'll use the new symbols
+   only if they're present.  */
+#ifdef _AIX
+# define __AR_SMALL__
+# define __AR_BIG__
+#endif
+
+#ifndef WINDOWS32
+# if !defined (__ANDROID__) && !defined (__BEOS__)
+#  include <ar.h>
+# else
+   /* These platforms don't have <ar.h> but have archives in the same format
+    * as many other Unices.  This was taken from GNU binutils for BeOS.
+    */
+#  define ARMAG "!<arch>\n"     /* String that begins an archive file.  */
+#  define SARMAG 8              /* Size of that string.  */
+#  define ARFMAG "`\n"          /* String in ar_fmag at end of each header.  */
+struct ar_hdr
+  {
+    char ar_name[16];           /* Member file name, sometimes / terminated. */
+    char ar_date[12];           /* File date, decimal seconds since Epoch.  */
+    char ar_uid[6], ar_gid[6];  /* User and group IDs, in ASCII decimal.  */
+    char ar_mode[8];            /* File mode, in ASCII octal.  */
+    char ar_size[10];           /* File size, in ASCII decimal.  */
+    char ar_fmag[2];            /* Always contains ARFMAG.  */
+  };
+# endif
+# define TOCHAR(_m)     (_m)
+#else
+/* These should allow us to read Windows (VC++) libraries (according to Frank
+ * Libbrecht <frankl@abzx.belgium.hp.com>)
+ */
+# include <windows.h>
+# include <windef.h>
+# include <io.h>
+# define ARMAG      IMAGE_ARCHIVE_START
+# define SARMAG     IMAGE_ARCHIVE_START_SIZE
+# define ar_hdr     _IMAGE_ARCHIVE_MEMBER_HEADER
+# define ar_name    Name
+# define ar_mode    Mode
+# define ar_size    Size
+# define ar_date    Date
+# define ar_uid     UserID
+# define ar_gid     GroupID
+/* In Windows the member names have type BYTE so we must cast them.  */
+# define TOCHAR(_m)     ((char *)(_m))
+#endif
+
+/* Cray's <ar.h> apparently defines this.  */
+#ifndef AR_HDR_SIZE
+# define   AR_HDR_SIZE  (sizeof (struct ar_hdr))
+#endif
+
+#include "output.h"
+
+/* Takes three arguments ARCHIVE, FUNCTION and ARG.
+
+   Open the archive named ARCHIVE, find its members one by one,
+   and for each one call FUNCTION with the following arguments:
+     archive file descriptor for reading the data,
+     member name,
+     member name might be truncated flag,
+     member header position in file,
+     member data position in file,
+     member data size,
+     member date,
+     member uid,
+     member gid,
+     member protection mode,
+     ARG.
+
+   The descriptor is poised to read the data of the member
+   when FUNCTION is called.  It does not matter how much
+   data FUNCTION reads.
+
+   If FUNCTION returns nonzero, we immediately return
+   what FUNCTION returned.
+
+   Returns -1 if archive does not exist,
+   Returns -2 if archive has invalid format.
+   Returns 0 if have scanned successfully.  */
+
+long int
+ar_scan (const char *archive, ar_member_func_t function, const void *arg)
+{
+#ifdef AIAMAG
+  FL_HDR fl_header;
+# ifdef AIAMAGBIG
+  int big_archive = 0;
+  FL_HDR_BIG fl_header_big;
+# endif
+#endif
+  char *namemap = 0;
+  int namemap_size = 0;
+  int desc = open (archive, O_RDONLY, 0);
+  if (desc < 0)
+    return -1;
+
+#ifdef SARMAG
+  {
+    char buf[SARMAG];
+    int nread;
+    nread = readbuf (desc, buf, SARMAG);
+    if (nread != SARMAG || memcmp (buf, ARMAG, SARMAG))
+      goto invalid;
+  }
+#else
+#ifdef AIAMAG
+  {
+    int nread;
+    nread = readbuf (desc, &fl_header, FL_HSZ);
+    if (nread != FL_HSZ)
+      goto invalid;
+
+#ifdef AIAMAGBIG
+    /* If this is a "big" archive, then set the flag and
+       re-read the header into the "big" structure. */
+    if (!memcmp (fl_header.fl_magic, AIAMAGBIG, SAIAMAG))
+      {
+        off_t o;
+
+        big_archive = 1;
+
+        /* seek back to beginning of archive */
+        EINTRLOOP (o, lseek (desc, 0, 0));
+        if (o < 0)
+          goto invalid;
+
+        /* re-read the header into the "big" structure */
+        nread = readbuf (desc, &fl_header_big, FL_HSZ_BIG);
+        if (nread != FL_HSZ_BIG)
+          goto invalid;
+      }
+    else
+#endif
+       /* Check to make sure this is a "normal" archive. */
+      if (memcmp (fl_header.fl_magic, AIAMAG, SAIAMAG))
+        goto invalid;
+  }
+#else
+  {
+#ifndef M_XENIX
+    int buf;
+#else
+    unsigned short int buf;
+#endif
+    int nread;
+    nread = readbuf (desc, &buf, sizeof (buf));
+    if (nread != sizeof (buf) || buf != ARMAG)
+      goto invalid;
+  }
+#endif
+#endif
+
+  /* Now find the members one by one.  */
+  {
+#ifdef SARMAG
+    long int member_offset = SARMAG;
+#else
+#ifdef AIAMAG
+    long int member_offset;
+    long int last_member_offset;
+
+#ifdef AIAMAGBIG
+    if ( big_archive )
+      {
+        sscanf (fl_header_big.fl_fstmoff, "%20ld", &member_offset);
+        sscanf (fl_header_big.fl_lstmoff, "%20ld", &last_member_offset);
+      }
+    else
+#endif
+      {
+        sscanf (fl_header.fl_fstmoff, "%12ld", &member_offset);
+        sscanf (fl_header.fl_lstmoff, "%12ld", &last_member_offset);
+      }
+
+    if (member_offset == 0)
+      {
+        /* Empty archive.  */
+        close (desc);
+        return 0;
+      }
+#else
+#ifndef M_XENIX
+    long int member_offset = sizeof (int);
+#else   /* Xenix.  */
+    long int member_offset = sizeof (unsigned short int);
+#endif  /* Not Xenix.  */
+#endif
+#endif
+
+    while (1)
+      {
+        int nread;
+        struct ar_hdr member_header;
+#ifdef AIAMAGBIG
+        struct ar_hdr_big member_header_big;
+#endif
+#ifdef AIAMAG
+# define ARNAME_MAX 255
+        char name[ARNAME_MAX + 1];
+        int name_len;
+        long int dateval;
+        int uidval, gidval;
+        long int data_offset;
+#else
+# define ARNAME_MAX (int)sizeof(member_header.ar_name)
+        char namebuf[ARNAME_MAX + 1];
+        char *name;
+        int is_namemap;         /* Nonzero if this entry maps long names.  */
+        int long_name = 0;
+#endif
+        long int eltsize;
+        unsigned int eltmode;
+        long int fnval;
+        off_t o;
+
+        EINTRLOOP (o, lseek (desc, member_offset, 0));
+        if (o < 0)
+          goto invalid;
+
+#ifdef AIAMAG
+#define       AR_MEMHDR_SZ(x) (sizeof(x) - sizeof (x._ar_name))
+
+#ifdef AIAMAGBIG
+        if (big_archive)
+          {
+            nread = readbuf (desc, &member_header_big,
+                             AR_MEMHDR_SZ(member_header_big));
+
+            if (nread != AR_MEMHDR_SZ(member_header_big))
+              goto invalid;
+
+            sscanf (member_header_big.ar_namlen, "%4d", &name_len);
+            if (name_len < 1 || name_len > ARNAME_MAX)
+              goto invalid;
+
+            nread = readbuf (desc, name, name_len);
+            if (nread != name_len)
+              goto invalid;
+
+            name[name_len] = '\0';
+
+            sscanf (member_header_big.ar_date, "%12ld", &dateval);
+            sscanf (member_header_big.ar_uid, "%12d", &uidval);
+            sscanf (member_header_big.ar_gid, "%12d", &gidval);
+            sscanf (member_header_big.ar_mode, "%12o", &eltmode);
+            sscanf (member_header_big.ar_size, "%20ld", &eltsize);
+
+            data_offset = (member_offset + AR_MEMHDR_SZ(member_header_big)
+                           + name_len + 2);
+          }
+        else
+#endif
+          {
+            nread = readbuf (desc, &member_header,
+                             AR_MEMHDR_SZ(member_header));
+
+            if (nread != AR_MEMHDR_SZ(member_header))
+              goto invalid;
+
+            sscanf (member_header.ar_namlen, "%4d", &name_len);
+            if (name_len < 1 || name_len > ARNAME_MAX)
+              goto invalid;
+
+            nread = readbuf (desc, name, name_len);
+            if (nread != name_len)
+              goto invalid;
+
+            name[name_len] = '\0';
+
+            sscanf (member_header.ar_date, "%12ld", &dateval);
+            sscanf (member_header.ar_uid, "%12d", &uidval);
+            sscanf (member_header.ar_gid, "%12d", &gidval);
+            sscanf (member_header.ar_mode, "%12o", &eltmode);
+            sscanf (member_header.ar_size, "%12ld", &eltsize);
+
+            data_offset = (member_offset + AR_MEMHDR_SZ(member_header)
+                           + name_len + 2);
+          }
+        data_offset += data_offset % 2;
+
+        fnval =
+          (*function) (desc, name, 0,
+                       member_offset, data_offset, eltsize,
+                       dateval, uidval, gidval,
+                       eltmode, arg);
+
+#else   /* Not AIAMAG.  */
+        nread = readbuf (desc, &member_header, AR_HDR_SIZE);
+        if (nread == 0)
+          /* No data left means end of file; that is OK.  */
+          break;
+
+        if (nread != AR_HDR_SIZE
+#if defined(ARFMAG) || defined(ARFZMAG)
+            || (
+# ifdef ARFMAG
+                memcmp (member_header.ar_fmag, ARFMAG, 2)
+# else
+                1
+# endif
+                &&
+# ifdef ARFZMAG
+                memcmp (member_header.ar_fmag, ARFZMAG, 2)
+# else
+                1
+# endif
+               )
+#endif
+            )
+          goto invalid;
+
+        name = namebuf;
+        memcpy (name, member_header.ar_name, sizeof member_header.ar_name);
+        {
+          char *p = name + sizeof member_header.ar_name;
+          do
+            *p = '\0';
+          while (p > name && *--p == ' ');
+
+#ifndef AIAMAG
+          /* If the member name is "//" or "ARFILENAMES/" this may be
+             a list of file name mappings.  The maximum file name
+             length supported by the standard archive format is 14
+             characters.  This member will actually always be the
+             first or second entry in the archive, but we don't check
+             that.  */
+          is_namemap = (!strcmp (name, "//")
+                        || !strcmp (name, "ARFILENAMES/"));
+#endif  /* Not AIAMAG. */
+
+          /* On some systems, there is a slash after each member name.  */
+          if (*p == '/')
+            *p = '\0';
+
+#ifndef AIAMAG
+          /* If the member name starts with a space or a slash, this
+             is an index into the file name mappings (used by GNU ar).
+             Otherwise if the member name looks like #1/NUMBER the
+             real member name appears in the element data (used by
+             4.4BSD).  */
+          if (! is_namemap
+              && (name[0] == ' ' || name[0] == '/')
+              && namemap != 0)
+            {
+              int name_off = atoi (name + 1);
+              int name_len;
+
+              if (name_off < 0 || name_off >= namemap_size)
+                goto invalid;
+
+              name = namemap + name_off;
+              name_len = strlen (name);
+              if (name_len < 1)
+                goto invalid;
+              long_name = 1;
+            }
+          else if (name[0] == '#'
+                   && name[1] == '1'
+                   && name[2] == '/')
+            {
+              int name_len = atoi (name + 3);
+
+              if (name_len < 1)
+                goto invalid;
+
+              name = alloca (name_len + 1);
+              nread = readbuf (desc, name, name_len);
+              if (nread != name_len)
+                goto invalid;
+
+              name[name_len] = '\0';
+
+              long_name = 1;
+            }
+#endif /* Not AIAMAG. */
+        }
+
+#ifndef M_XENIX
+        sscanf (TOCHAR (member_header.ar_mode), "%o", &eltmode);
+        eltsize = atol (TOCHAR (member_header.ar_size));
+#else   /* Xenix.  */
+        eltmode = (unsigned short int) member_header.ar_mode;
+        eltsize = member_header.ar_size;
+#endif  /* Not Xenix.  */
+
+        fnval =
+          (*function) (desc, name, ! long_name, member_offset,
+                       member_offset + AR_HDR_SIZE, eltsize,
+#ifndef M_XENIX
+                       atol (TOCHAR (member_header.ar_date)),
+                       atoi (TOCHAR (member_header.ar_uid)),
+                       atoi (TOCHAR (member_header.ar_gid)),
+#else   /* Xenix.  */
+                       member_header.ar_date,
+                       member_header.ar_uid,
+                       member_header.ar_gid,
+#endif  /* Not Xenix.  */
+                       eltmode, arg);
+
+#endif  /* AIAMAG.  */
+
+        if (fnval)
+          {
+            (void) close (desc);
+            return fnval;
+          }
+
+#ifdef AIAMAG
+        if (member_offset == last_member_offset)
+          /* End of the chain.  */
+          break;
+
+#ifdef AIAMAGBIG
+        if (big_archive)
+         sscanf (member_header_big.ar_nxtmem, "%20ld", &member_offset);
+        else
+#endif
+          sscanf (member_header.ar_nxtmem, "%12ld", &member_offset);
+
+        if (lseek (desc, member_offset, 0) != member_offset)
+          goto invalid;
+#else
+
+        /* If this member maps archive names, we must read it in.  The
+           name map will always precede any members whose names must
+           be mapped.  */
+        if (is_namemap)
+          {
+            char *clear;
+            char *limit;
+
+            if (eltsize > INT_MAX)
+              goto invalid;
+            namemap = alloca (eltsize + 1);
+            nread = readbuf (desc, namemap, eltsize);
+            if (nread != eltsize)
+              goto invalid;
+            namemap_size = eltsize;
+
+            /* The names are separated by newlines.  Some formats have
+               a trailing slash.  Null terminate the strings for
+               convenience.  */
+            limit = namemap + eltsize;
+            for (clear = namemap; clear < limit; clear++)
+              {
+                if (*clear == '\n')
+                  {
+                    *clear = '\0';
+                    if (clear[-1] == '/')
+                      clear[-1] = '\0';
+                  }
+              }
+            *limit = '\0';
+
+            is_namemap = 0;
+          }
+
+        member_offset += AR_HDR_SIZE + eltsize;
+        if (member_offset % 2 != 0)
+          member_offset++;
+#endif
+      }
+  }
+
+  close (desc);
+  return 0;
+
+ invalid:
+  close (desc);
+  return -2;
+}
+#endif /* !VMS */
+
+/* Return nonzero iff NAME matches MEM.
+   If TRUNCATED is nonzero, MEM may be truncated to
+   sizeof (struct ar_hdr.ar_name) - 1.  */
+
+int
+ar_name_equal (const char *name, const char *mem, int truncated)
+{
+  const char *p;
+
+  p = strrchr (name, '/');
+  if (p != 0)
+    name = p + 1;
+
+#ifndef VMS
+  if (truncated)
+    {
+#ifdef AIAMAG
+      /* TRUNCATED should never be set on this system.  */
+      abort ();
+#else
+      struct ar_hdr hdr;
+#if !defined (__hpux) && !defined (cray)
+      return strneq (name, mem, sizeof (hdr.ar_name) - 1);
+#else
+      return strneq (name, mem, sizeof (hdr.ar_name) - 2);
+#endif /* !__hpux && !cray */
+#endif /* !AIAMAG */
+    }
+
+  return !strcmp (name, mem);
+#else
+  /* VMS members do not have suffixes, but the filenames usually
+     have.
+     Do we need to strip VMS disk/directory format paths?
+
+     Most VMS compilers etc. by default are case insensitive
+     but produce uppercase external names, incl. module names.
+     However the VMS librarian (ar) and the linker by default
+     are case sensitive: they take what they get, usually
+     uppercase names. So for the non-default settings of the
+     compilers etc. there is a need to have a case sensitive
+     mode. */
+  {
+    int len;
+    len = strlen(mem);
+    int match;
+    char *dot;
+    if ((dot=strrchr(name,'.')))
+      match = (len == dot - name) && !strncasecmp(name, mem, len);
+    else
+      match = !strcasecmp (name, mem);
+    return match;
+  }
+#endif /* !VMS */
+}
+
+#ifndef VMS
+/* ARGSUSED */
+static long int
+ar_member_pos (int desc UNUSED, const char *mem, int truncated,
+               long int hdrpos, long int datapos UNUSED, long int size UNUSED,
+               long int date UNUSED, int uid UNUSED, int gid UNUSED,
+               unsigned int mode UNUSED, const void *name)
+{
+  if (!ar_name_equal (name, mem, truncated))
+    return 0;
+  return hdrpos;
+}
+
+/* Set date of member MEMNAME in archive ARNAME to current time.
+   Returns 0 if successful,
+   -1 if file ARNAME does not exist,
+   -2 if not a valid archive,
+   -3 if other random system call error (including file read-only),
+   1 if valid but member MEMNAME does not exist.  */
+
+int
+ar_member_touch (const char *arname, const char *memname)
+{
+  long int pos = ar_scan (arname, ar_member_pos, memname);
+  int fd;
+  struct ar_hdr ar_hdr;
+  off_t o;
+  int r;
+  unsigned int ui;
+  struct stat statbuf;
+
+  if (pos < 0)
+    return (int) pos;
+  if (!pos)
+    return 1;
+
+  EINTRLOOP (fd, open (arname, O_RDWR, 0666));
+  if (fd < 0)
+    return -3;
+  /* Read in this member's header */
+  EINTRLOOP (o, lseek (fd, pos, 0));
+  if (o < 0)
+    goto lose;
+  r = readbuf (fd, &ar_hdr, AR_HDR_SIZE);
+  if (r != AR_HDR_SIZE)
+    goto lose;
+  /* The file's mtime is the time we we want.  */
+  EINTRLOOP (r, fstat (fd, &statbuf));
+  if (r < 0)
+    goto lose;
+  /* Advance member's time to that time */
+#if defined(ARFMAG) || defined(ARFZMAG) || defined(AIAMAG) || defined(WINDOWS32)
+  for (ui = 0; ui < sizeof ar_hdr.ar_date; ui++)
+    ar_hdr.ar_date[ui] = ' ';
+  sprintf (TOCHAR (ar_hdr.ar_date), "%lu", (long unsigned) statbuf.st_mtime);
+  ar_hdr.ar_date[strlen (ar_hdr.ar_date)] = ' ';
+#else
+  ar_hdr.ar_date = statbuf.st_mtime;
+#endif
+  /* Write back this member's header */
+  EINTRLOOP (o, lseek (fd, pos, 0));
+  if (o < 0)
+    goto lose;
+  r = writebuf (fd, &ar_hdr, AR_HDR_SIZE);
+  if (r != AR_HDR_SIZE)
+    goto lose;
+  close (fd);
+  return 0;
+
+ lose:
+  r = errno;
+  close (fd);
+  errno = r;
+  return -3;
+}
+#endif
+
+#ifdef TEST
+
+long int
+describe_member (int desc, const char *name, int truncated,
+                 long int hdrpos, long int datapos, long int size,
+                 long int date, int uid, int gid, unsigned int mode,
+                 const void *arg)
+{
+  extern char *ctime ();
+
+  printf (_("Member '%s'%s: %ld bytes at %ld (%ld).\n"),
+          name, truncated ? _(" (name might be truncated)") : "",
+          size, hdrpos, datapos);
+  printf (_("  Date %s"), ctime (&date));
+  printf (_("  uid = %d, gid = %d, mode = 0%o.\n"), uid, gid, mode);
+
+  return 0;
+}
+
+int
+main (int argc, char **argv)
+{
+  ar_scan (argv[1], describe_member, NULL);
+  return 0;
+}
+
+#endif  /* TEST.  */
+#endif  /* NO_ARCHIVES.  */

src/commands.c

@@ -0,0 +1,711 @@
+/* Command processing for GNU Make.
+Copyright (C) 1988-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "filedef.h"
+#include "dep.h"
+#include "variable.h"
+#include "job.h"
+#include "commands.h"
+#ifdef WINDOWS32
+#include <windows.h>
+#include "w32err.h"
+#endif
+
+#if VMS
+# define FILE_LIST_SEPARATOR (vms_comma_separator ? ',' : ' ')
+#else
+# define FILE_LIST_SEPARATOR ' '
+#endif
+
+#ifndef HAVE_UNISTD_H
+pid_t getpid ();
+#endif
+
+
+static unsigned long
+dep_hash_1 (const void *key)
+{
+  const struct dep *d = key;
+  return_STRING_HASH_1 (dep_name (d));
+}
+
+static unsigned long
+dep_hash_2 (const void *key)
+{
+  const struct dep *d = key;
+  return_STRING_HASH_2 (dep_name (d));
+}
+
+static int
+dep_hash_cmp (const void *x, const void *y)
+{
+  const struct dep *dx = x;
+  const struct dep *dy = y;
+  return strcmp (dep_name (dx), dep_name (dy));
+}
+
+/* Set FILE's automatic variables up.  */
+
+void
+set_file_variables (struct file *file)
+{
+  struct dep *d;
+  const char *at, *percent, *star, *less;
+
+#ifndef NO_ARCHIVES
+  /* If the target is an archive member 'lib(member)',
+     then $@ is 'lib' and $% is 'member'.  */
+
+  if (ar_name (file->name))
+    {
+      size_t len;
+      const char *cp;
+      char *p;
+
+      cp = strchr (file->name, '(');
+      p = alloca (cp - file->name + 1);
+      memcpy (p, file->name, cp - file->name);
+      p[cp - file->name] = '\0';
+      at = p;
+      len = strlen (cp + 1);
+      p = alloca (len);
+      memcpy (p, cp + 1, len - 1);
+      p[len - 1] = '\0';
+      percent = p;
+    }
+  else
+#endif  /* NO_ARCHIVES.  */
+    {
+      at = file->name;
+      percent = "";
+    }
+
+  /* $* is the stem from an implicit or static pattern rule.  */
+  if (file->stem == 0)
+    {
+      /* In Unix make, $* is set to the target name with
+         any suffix in the .SUFFIXES list stripped off for
+         explicit rules.  We store this in the 'stem' member.  */
+      const char *name;
+      size_t len;
+
+#ifndef NO_ARCHIVES
+      if (ar_name (file->name))
+        {
+          name = strchr (file->name, '(') + 1;
+          len = strlen (name) - 1;
+        }
+      else
+#endif
+        {
+          name = file->name;
+          len = strlen (name);
+        }
+
+      for (d = enter_file (strcache_add (".SUFFIXES"))->deps; d ; d = d->next)
+        {
+          size_t slen = strlen (dep_name (d));
+          if (len > slen && strneq (dep_name (d), name + (len - slen), slen))
+            {
+              file->stem = strcache_add_len (name, len - slen);
+              break;
+            }
+        }
+      if (d == 0)
+        file->stem = "";
+    }
+  star = file->stem;
+
+  /* $< is the first not order-only dependency.  */
+  less = "";
+  for (d = file->deps; d != 0; d = d->next)
+    if (!d->ignore_mtime)
+      {
+        if (!d->need_2nd_expansion)
+          less = dep_name (d);
+        break;
+      }
+
+  if (file->cmds != 0 && file->cmds == default_file->cmds)
+    /* This file got its commands from .DEFAULT.
+       In this case $< is the same as $@.  */
+    less = at;
+
+#define DEFINE_VARIABLE(name, len, value) \
+  (void) define_variable_for_file (name,len,value,o_automatic,0,file)
+
+  /* Define the variables.  */
+
+  DEFINE_VARIABLE ("<", 1, less);
+  DEFINE_VARIABLE ("*", 1, star);
+  DEFINE_VARIABLE ("@", 1, at);
+  DEFINE_VARIABLE ("%", 1, percent);
+
+  /* Compute the values for $^, $+, $?, and $|.  */
+
+  {
+    static char *plus_value=0, *bar_value=0, *qmark_value=0;
+    static size_t plus_max=0, bar_max=0, qmark_max=0;
+
+    size_t qmark_len, plus_len, bar_len;
+    char *cp;
+    char *caret_value;
+    char *qp;
+    char *bp;
+    size_t len;
+
+    struct hash_table dep_hash;
+    void **slot;
+
+    /* Compute first the value for $+, which is supposed to contain
+       duplicate dependencies as they were listed in the makefile.  */
+
+    plus_len = 0;
+    bar_len = 0;
+    for (d = file->deps; d != 0; d = d->next)
+      {
+        if (!d->need_2nd_expansion)
+          {
+            if (d->ignore_mtime)
+              bar_len += strlen (dep_name (d)) + 1;
+            else
+              plus_len += strlen (dep_name (d)) + 1;
+          }
+      }
+
+    if (bar_len == 0)
+      bar_len++;
+
+    if (plus_len == 0)
+      plus_len++;
+
+    if (plus_len > plus_max)
+      plus_value = xrealloc (plus_value, plus_max = plus_len);
+
+    cp = plus_value;
+
+    qmark_len = plus_len + 1;   /* Will be this or less.  */
+    for (d = file->deps; d != 0; d = d->next)
+      if (! d->ignore_mtime && ! d->need_2nd_expansion)
+        {
+          const char *c = dep_name (d);
+
+#ifndef NO_ARCHIVES
+          if (ar_name (c))
+            {
+              c = strchr (c, '(') + 1;
+              len = strlen (c) - 1;
+            }
+          else
+#endif
+            len = strlen (c);
+
+          memcpy (cp, c, len);
+          cp += len;
+          *cp++ = FILE_LIST_SEPARATOR;
+          if (! (d->changed || always_make_flag))
+            qmark_len -= len + 1;       /* Don't space in $? for this one.  */
+        }
+
+    /* Kill the last space and define the variable.  */
+
+    cp[cp > plus_value ? -1 : 0] = '\0';
+    DEFINE_VARIABLE ("+", 1, plus_value);
+
+    /* Compute the values for $^, $?, and $|.  */
+
+    cp = caret_value = plus_value; /* Reuse the buffer; it's big enough.  */
+
+    if (qmark_len > qmark_max)
+      qmark_value = xrealloc (qmark_value, qmark_max = qmark_len);
+    qp = qmark_value;
+
+    if (bar_len > bar_max)
+      bar_value = xrealloc (bar_value, bar_max = bar_len);
+    bp = bar_value;
+
+    /* Make sure that no dependencies are repeated in $^, $?, and $|.  It
+       would be natural to combine the next two loops but we can't do it
+       because of a situation where we have two dep entries, the first
+       is order-only and the second is normal (see below).  */
+
+    hash_init (&dep_hash, 500, dep_hash_1, dep_hash_2, dep_hash_cmp);
+
+    for (d = file->deps; d != 0; d = d->next)
+      {
+        if (d->need_2nd_expansion)
+          continue;
+
+        slot = hash_find_slot (&dep_hash, d);
+        if (HASH_VACANT (*slot))
+          hash_insert_at (&dep_hash, d, slot);
+        else
+          {
+            /* Check if the two prerequisites have different ignore_mtime.
+               If so then we need to "upgrade" one that is order-only.  */
+
+            struct dep* hd = (struct dep*) *slot;
+
+            if (d->ignore_mtime != hd->ignore_mtime)
+              d->ignore_mtime = hd->ignore_mtime = 0;
+          }
+      }
+
+    for (d = file->deps; d != 0; d = d->next)
+      {
+        const char *c;
+
+        if (d->need_2nd_expansion || hash_find_item (&dep_hash, d) != d)
+          continue;
+
+        c = dep_name (d);
+#ifndef NO_ARCHIVES
+        if (ar_name (c))
+          {
+            c = strchr (c, '(') + 1;
+            len = strlen (c) - 1;
+          }
+        else
+#endif
+          len = strlen (c);
+
+        if (d->ignore_mtime)
+          {
+            memcpy (bp, c, len);
+            bp += len;
+            *bp++ = FILE_LIST_SEPARATOR;
+          }
+        else
+          {
+            memcpy (cp, c, len);
+            cp += len;
+            *cp++ = FILE_LIST_SEPARATOR;
+            if (d->changed || always_make_flag)
+              {
+                memcpy (qp, c, len);
+                qp += len;
+                *qp++ = FILE_LIST_SEPARATOR;
+              }
+          }
+      }
+
+    hash_free (&dep_hash, 0);
+
+    /* Kill the last spaces and define the variables.  */
+
+    cp[cp > caret_value ? -1 : 0] = '\0';
+    DEFINE_VARIABLE ("^", 1, caret_value);
+
+    qp[qp > qmark_value ? -1 : 0] = '\0';
+    DEFINE_VARIABLE ("?", 1, qmark_value);
+
+    bp[bp > bar_value ? -1 : 0] = '\0';
+    DEFINE_VARIABLE ("|", 1, bar_value);
+  }
+
+#undef  DEFINE_VARIABLE
+}
+
+/* Chop CMDS up into individual command lines if necessary.
+   Also set the 'lines_flags' and 'any_recurse' members.  */
+
+void
+chop_commands (struct commands *cmds)
+{
+  unsigned int nlines;
+  unsigned short idx;
+  char **lines;
+
+  /* If we don't have any commands,
+     or we already parsed them, never mind.  */
+
+  if (!cmds || cmds->command_lines != 0)
+    return;
+
+  /* Chop CMDS->commands up into lines in CMDS->command_lines.  */
+
+  if (one_shell)
+    {
+      size_t l = strlen (cmds->commands);
+
+      nlines = 1;
+      lines = xmalloc (nlines * sizeof (char *));
+      lines[0] = xstrdup (cmds->commands);
+
+      /* Strip the trailing newline.  */
+      if (l > 0 && lines[0][l-1] == '\n')
+        lines[0][l-1] = '\0';
+    }
+  else
+    {
+      const char *p;
+
+      nlines = 5;
+      lines = xmalloc (nlines * sizeof (char *));
+      idx = 0;
+      p = cmds->commands;
+      while (*p != '\0')
+        {
+          const char *end = p;
+        find_end:;
+          end = strchr (end, '\n');
+          if (end == 0)
+            end = p + strlen (p);
+          else if (end > p && end[-1] == '\\')
+            {
+              int backslash = 1;
+              const char *b;
+              for (b = end - 2; b >= p && *b == '\\'; --b)
+                backslash = !backslash;
+              if (backslash)
+                {
+                  ++end;
+                  goto find_end;
+                }
+            }
+
+          if (idx == nlines)
+            {
+              nlines += 2;
+              lines = xrealloc (lines, nlines * sizeof (char *));
+            }
+          lines[idx++] = xstrndup (p, (size_t) (end - p));
+          p = end;
+          if (*p != '\0')
+            ++p;
+        }
+
+      if (idx != nlines)
+        {
+          nlines = idx;
+          lines = xrealloc (lines, nlines * sizeof (char *));
+        }
+    }
+
+  /* Finally, set the corresponding CMDS->lines_flags elements and the
+     CMDS->any_recurse flag.  */
+
+  if (nlines > USHRT_MAX)
+    ON (fatal, &cmds->fileinfo, _("Recipe has too many lines (%ud)"), nlines);
+
+  cmds->ncommand_lines = (unsigned short)nlines;
+  cmds->command_lines = lines;
+
+  cmds->any_recurse = 0;
+  cmds->lines_flags = xmalloc (nlines);
+
+  for (idx = 0; idx < nlines; ++idx)
+    {
+      unsigned char flags = 0;
+      const char *p = lines[idx];
+
+      while (ISBLANK (*p) || *p == '-' || *p == '@' || *p == '+')
+        switch (*(p++))
+          {
+          case '+':
+            flags |= COMMANDS_RECURSE;
+            break;
+          case '@':
+            flags |= COMMANDS_SILENT;
+            break;
+          case '-':
+            flags |= COMMANDS_NOERROR;
+            break;
+          }
+
+      /* If no explicit '+' was given, look for MAKE variable references.  */
+      if (!(flags & COMMANDS_RECURSE)
+          && (strstr (p, "$(MAKE)") != 0 || strstr (p, "${MAKE}") != 0))
+        flags |= COMMANDS_RECURSE;
+
+      cmds->lines_flags[idx] = flags;
+      cmds->any_recurse |= flags & COMMANDS_RECURSE ? 1 : 0;
+    }
+}
+
+/* Execute the commands to remake FILE.  If they are currently executing,
+   return or have already finished executing, just return.  Otherwise,
+   fork off a child process to run the first command line in the sequence.  */
+
+void
+execute_file_commands (struct file *file)
+{
+  const char *p;
+
+  /* Don't go through all the preparations if
+     the commands are nothing but whitespace.  */
+
+  for (p = file->cmds->commands; *p != '\0'; ++p)
+    if (!ISSPACE (*p) && *p != '-' && *p != '@' && *p != '+')
+      break;
+  if (*p == '\0')
+    {
+      /* If there are no commands, assume everything worked.  */
+      set_command_state (file, cs_running);
+      file->update_status = us_success;
+      notice_finished_file (file);
+      return;
+    }
+
+  /* First set the automatic variables according to this file.  */
+
+  initialize_file_variables (file, 0);
+
+  set_file_variables (file);
+
+  /* If this is a loaded dynamic object, unload it before remaking.
+     Some systems don't support overwriting a loaded object.  */
+  if (file->loaded)
+    unload_file (file->name);
+
+  /* Start the commands running.  */
+  new_job (file);
+}
+
+/* This is set while we are inside fatal_error_signal,
+   so things can avoid nonreentrant operations.  */
+
+int handling_fatal_signal = 0;
+
+/* Handle fatal signals.  */
+
+RETSIGTYPE
+fatal_error_signal (int sig)
+{
+#ifdef __MSDOS__
+  extern int dos_status, dos_command_running;
+
+  if (dos_command_running)
+    {
+      /* That was the child who got the signal, not us.  */
+      dos_status |= (sig << 8);
+      return;
+    }
+  remove_intermediates (1);
+  exit (EXIT_FAILURE);
+#else /* not __MSDOS__ */
+#ifdef _AMIGA
+  remove_intermediates (1);
+  if (sig == SIGINT)
+     fputs (_("*** Break.\n"), stderr);
+
+  exit (10);
+#else /* not Amiga */
+#ifdef WINDOWS32
+  extern HANDLE main_thread;
+
+  /* Windows creates a sperate thread for handling Ctrl+C, so we need
+     to suspend the main thread, or else we will have race conditions
+     when both threads call reap_children.  */
+  if (main_thread)
+    {
+      DWORD susp_count = SuspendThread (main_thread);
+
+      if (susp_count != 0)
+        fprintf (stderr, "SuspendThread: suspend count = %ld\n", susp_count);
+      else if (susp_count == (DWORD)-1)
+        {
+          DWORD ierr = GetLastError ();
+
+          fprintf (stderr, "SuspendThread: error %ld: %s\n",
+                   ierr, map_windows32_error_to_string (ierr));
+        }
+    }
+#endif
+  handling_fatal_signal = 1;
+
+  /* Set the handling for this signal to the default.
+     It is blocked now while we run this handler.  */
+  signal (sig, SIG_DFL);
+
+  /* A termination signal won't be sent to the entire
+     process group, but it means we want to kill the children.  */
+
+  if (sig == SIGTERM)
+    {
+      struct child *c;
+      for (c = children; c != 0; c = c->next)
+        if (!c->remote && c->pid > 0)
+          (void) kill (c->pid, SIGTERM);
+    }
+
+  /* If we got a signal that means the user
+     wanted to kill make, remove pending targets.  */
+
+  if (sig == SIGTERM || sig == SIGINT
+#ifdef SIGHUP
+    || sig == SIGHUP
+#endif
+#ifdef SIGQUIT
+    || sig == SIGQUIT
+#endif
+    )
+    {
+      struct child *c;
+
+      /* Remote children won't automatically get signals sent
+         to the process group, so we must send them.  */
+      for (c = children; c != 0; c = c->next)
+        if (c->remote && c->pid > 0)
+          (void) remote_kill (c->pid, sig);
+
+      for (c = children; c != 0; c = c->next)
+        delete_child_targets (c);
+
+      /* Clean up the children.  We don't just use the call below because
+         we don't want to print the "Waiting for children" message.  */
+      while (job_slots_used > 0)
+        reap_children (1, 0);
+    }
+  else
+    /* Wait for our children to die.  */
+    while (job_slots_used > 0)
+      reap_children (1, 1);
+
+  /* Delete any non-precious intermediate files that were made.  */
+
+  remove_intermediates (1);
+
+#ifdef SIGQUIT
+  if (sig == SIGQUIT)
+    /* We don't want to send ourselves SIGQUIT, because it will
+       cause a core dump.  Just exit instead.  */
+    exit (MAKE_TROUBLE);
+#endif
+
+#ifdef WINDOWS32
+  if (main_thread)
+    CloseHandle (main_thread);
+  /* Cannot call W32_kill with a pid (it needs a handle).  The exit
+     status of 130 emulates what happens in Bash.  */
+  exit (130);
+#else
+  /* Signal the same code; this time it will really be fatal.  The signal
+     will be unblocked when we return and arrive then to kill us.  */
+  if (kill (getpid (), sig) < 0)
+    pfatal_with_name ("kill");
+#endif /* not WINDOWS32 */
+#endif /* not Amiga */
+#endif /* not __MSDOS__  */
+}
+
+/* Delete FILE unless it's precious or not actually a file (phony),
+   and it has changed on disk since we last stat'd it.  */
+
+static void
+delete_target (struct file *file, const char *on_behalf_of)
+{
+  struct stat st;
+  int e;
+
+  if (file->precious || file->phony)
+    return;
+
+#ifndef NO_ARCHIVES
+  if (ar_name (file->name))
+    {
+      time_t file_date = (file->last_mtime == NONEXISTENT_MTIME
+                          ? (time_t) -1
+                          : (time_t) FILE_TIMESTAMP_S (file->last_mtime));
+      if (ar_member_date (file->name) != file_date)
+        {
+          if (on_behalf_of)
+            OSS (error, NILF,
+                 _("*** [%s] Archive member '%s' may be bogus; not deleted"),
+                 on_behalf_of, file->name);
+          else
+            OS (error, NILF,
+                _("*** Archive member '%s' may be bogus; not deleted"),
+                file->name);
+        }
+      return;
+    }
+#endif
+
+  EINTRLOOP (e, stat (file->name, &st));
+  if (e == 0
+      && S_ISREG (st.st_mode)
+      && FILE_TIMESTAMP_STAT_MODTIME (file->name, st) != file->last_mtime)
+    {
+      if (on_behalf_of)
+        OSS (error, NILF,
+             _("*** [%s] Deleting file '%s'"), on_behalf_of, file->name);
+      else
+        OS (error, NILF, _("*** Deleting file '%s'"), file->name);
+      if (unlink (file->name) < 0
+          && errno != ENOENT)   /* It disappeared; so what.  */
+        perror_with_name ("unlink: ", file->name);
+    }
+}
+
+
+/* Delete all non-precious targets of CHILD unless they were already deleted.
+   Set the flag in CHILD to say they've been deleted.  */
+
+void
+delete_child_targets (struct child *child)
+{
+  struct dep *d;
+
+  if (child->deleted || child->pid < 0)
+    return;
+
+  /* Delete the target file if it changed.  */
+  delete_target (child->file, NULL);
+
+  /* Also remove any non-precious targets listed in the 'also_make' member.  */
+  for (d = child->file->also_make; d != 0; d = d->next)
+    delete_target (d->file, child->file->name);
+
+  child->deleted = 1;
+}
+
+/* Print out the commands in CMDS.  */
+
+void
+print_commands (const struct commands *cmds)
+{
+  const char *s;
+
+  fputs (_("#  recipe to execute"), stdout);
+
+  if (cmds->fileinfo.filenm == 0)
+    puts (_(" (built-in):"));
+  else
+    printf (_(" (from '%s', line %lu):\n"),
+            cmds->fileinfo.filenm, cmds->fileinfo.lineno);
+
+  s = cmds->commands;
+  while (*s != '\0')
+    {
+      const char *end;
+      int bs;
+
+      /* Print one full logical recipe line: find a non-escaped newline.  */
+      for (end = s, bs = 0; *end != '\0'; ++end)
+        {
+          if (*end == '\n' && !bs)
+            break;
+
+          bs = *end == '\\' ? !bs : 0;
+        }
+
+      printf ("%c%.*s\n", cmd_prefix, (int) (end - s), s);
+
+      s = end + (end[0] == '\n');
+    }
+}

src/commands.h

@@ -0,0 +1,42 @@
+/* Definition of data structures describing shell commands for GNU Make.
+Copyright (C) 1988-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Structure that gives the commands to make a file
+   and information about where these commands came from.  */
+
+struct commands
+  {
+    floc fileinfo;              /* Where commands were defined.  */
+    char *commands;             /* Commands text.  */
+    char **command_lines;       /* Commands chopped up into lines.  */
+    unsigned char *lines_flags; /* One set of flag bits for each line.  */
+    unsigned short ncommand_lines;/* Number of command lines.  */
+    char recipe_prefix;         /* Recipe prefix for this command set.  */
+    unsigned int any_recurse:1; /* Nonzero if any 'lines_flags' elt has */
+                                /* the COMMANDS_RECURSE bit set.  */
+  };
+
+/* Bits in 'lines_flags'.  */
+#define COMMANDS_RECURSE        1 /* Recurses: + or $(MAKE).  */
+#define COMMANDS_SILENT         2 /* Silent: @.  */
+#define COMMANDS_NOERROR        4 /* No errors: -.  */
+
+RETSIGTYPE fatal_error_signal (int sig);
+void execute_file_commands (struct file *file);
+void print_commands (const struct commands *cmds);
+void delete_child_targets (struct child *child);
+void chop_commands (struct commands *cmds);
+void set_file_variables (struct file *file);

src/config.ami.template

@@ -0,0 +1,337 @@
+/* config.h -- hand-massaged for Amiga                                  -*-C-*-
+Copyright (C) 1995-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Define if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* #undef _ALL_SOURCE */
+#endif
+
+/* Define if using alloca.c.  */
+#define C_ALLOCA
+
+/* Define if the closedir function returns void instead of int.  */
+/* #undef CLOSEDIR_VOID */
+
+/* Define to empty if the keyword does not work.  */
+/* #undef const */
+
+/* Define to one of _getb67, GETB67, getb67 for Cray-2 and Cray-YMP systems.
+   This function is required for alloca.c support on those systems.  */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define for DGUX with <sys/dg_sys_info.h>.  */
+/* #undef DGUX */
+
+/* Define if the 'getloadavg' function needs to be run setuid or setgid.  */
+/* #undef GETLOADAVG_PRIVILEGED */
+
+/* Define to 'unsigned long' or 'unsigned long long'
+   if <inttypes.h> doesn't define.  */
+#define uintmax_t unsigned long
+
+/* Define to 'int' if <sys/types.h> doesn't define.  */
+#define gid_t int
+
+/* Define if you have alloca, as a function or macro.  */
+/* #undef HAVE_ALLOCA */
+
+/* Define if you have <alloca.h> and it should be used (not on Ultrix).  */
+/* #undef HAVE_ALLOCA_H */
+
+/* Define if your system has a working fnmatch function.  */
+/* #undef HAVE_FNMATCH */
+
+/* Define if your system has its own 'getloadavg' function.  */
+/* #undef HAVE_GETLOADAVG */
+
+/* Define if you have the getmntent function.  */
+/* #undef HAVE_GETMNTENT */
+
+/* Embed GNU Guile support */
+/* #undef HAVE_GUILE */
+
+/* Define if the 'long double' type works.  */
+/* #undef HAVE_LONG_DOUBLE */
+
+/* Define if you support file names longer than 14 characters.  */
+#define HAVE_LONG_FILE_NAMES 1
+
+/* Define if you have a working 'mmap' system call.  */
+/* #undef HAVE_MMAP */
+
+/* Define if system calls automatically restart after interruption
+   by a signal.  */
+/* #undef HAVE_RESTARTABLE_SYSCALLS */
+
+/* Define if your struct stat has st_blksize.  */
+/* #undef HAVE_ST_BLKSIZE */
+
+/* Define if your struct stat has st_blocks.  */
+/* #undef HAVE_ST_BLOCKS */
+
+/* Define if you have the strcoll function and it is properly defined.  */
+#define HAVE_STRCOLL 1
+
+/* Define if your struct stat has st_rdev.  */
+#define HAVE_ST_RDEV 1
+
+/* Define if you have the strftime function.  */
+#define HAVE_STRFTIME 1
+
+/* Define if you have <sys/wait.h> that is POSIX.1 compatible.  */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define if your struct tm has tm_zone.  */
+/* #undef HAVE_TM_ZONE */
+
+/* Define if you don't have tm_zone but do have the external array
+   tzname.  */
+#define HAVE_TZNAME 1
+
+/* Define if you have <unistd.h>.  */
+#define HAVE_UNISTD_H 1
+
+/* Define if utime(file, NULL) sets file's timestamp to the present.  */
+/* #undef HAVE_UTIME_NULL */
+
+/* Define if you have the wait3 system call.  */
+/* #undef HAVE_WAIT3 */
+
+/* Define if on MINIX.  */
+/* #undef _MINIX */
+
+/* Define if your struct nlist has an n_un member.  */
+/* #undef NLIST_NAME_UNION */
+
+/* Define if you have <nlist.h>.  */
+/* #undef NLIST_STRUCT */
+
+/* Define if your C compiler doesn't accept -c and -o together.  */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* Define to 'int' if <sys/types.h> doesn't define.  */
+#define pid_t int
+
+/* Define if the system does not provide POSIX.1 features except
+   with this defined.  */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define if you need to in order for stat and other things to work.  */
+/* #undef _POSIX_SOURCE */
+
+/* Define as the return type of signal handlers (int or void).  */
+#define RETSIGTYPE void
+
+/* Define if the setvbuf function takes the buffering type as its second
+   argument and the buffer pointer as the third, as on System V
+   before release 3.  */
+/* #undef SETVBUF_REVERSED */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run-time.
+        STACK_DIRECTION > 0 => grows toward higher addresses
+        STACK_DIRECTION < 0 => grows toward lower addresses
+        STACK_DIRECTION = 0 => direction of growth unknown
+ */
+#define STACK_DIRECTION -1
+
+/* Define if the 'S_IS*' macros in <sys/stat.h> do not work properly.  */
+/* #undef STAT_MACROS_BROKEN */
+
+/* Define if you have the ANSI C header files.  */
+#define STDC_HEADERS
+
+/* Define on System V Release 4.  */
+/* #undef SVR4 */
+
+/* Define if 'sys_siglist' is declared by <signal.h>.  */
+/* #undef SYS_SIGLIST_DECLARED */
+
+/* Define to 'int' if <sys/types.h> doesn't define.  */
+#define uid_t int
+
+/* Define for Encore UMAX.  */
+/* #undef UMAX */
+
+/* Define for Encore UMAX 4.3 that has <inq_status/cpustats.h>
+   instead of <sys/cpustats.h>.  */
+/* #undef UMAX4_3 */
+
+/* Name of this package (needed by automake) */
+#define PACKAGE "%PACKAGE%"
+
+/* Version of this package (needed by automake) */
+#define VERSION "%VERSION%"
+
+/* Define to the name of the SCCS 'get' command.  */
+#define SCCS_GET "get"
+
+/* Define this if the SCCS 'get' command understands the '-G<file>' option.  */
+/* #undef SCCS_GET_MINUS_G */
+
+/* Define this to enable job server support in GNU make.  */
+/* #undef MAKE_JOBSERVER */
+
+/* Define to be the nanoseconds member of struct stat's st_mtim,
+   if it exists.  */
+/* #undef ST_MTIM_NSEC */
+
+/* Define this if the C library defines the variable 'sys_siglist'.  */
+/* #undef HAVE_SYS_SIGLIST */
+
+/* Define this if the C library defines the variable '_sys_siglist'.  */
+/* #undef HAVE__SYS_SIGLIST */
+
+/* Define this if you have the 'union wait' type in <sys/wait.h>.  */
+/* #undef HAVE_UNION_WAIT */
+
+/* Define if you have the dup2 function.  */
+/* #undef HAVE_DUP2 */
+
+/* Define if you have the getcwd function.  */
+#define HAVE_GETCWD 1
+
+/* Define if you have the getgroups function.  */
+/* #undef HAVE_GETGROUPS */
+
+/* Define if you have the gethostbyname function.  */
+/* #undef HAVE_GETHOSTBYNAME */
+
+/* Define if you have the gethostname function.  */
+/* #undef HAVE_GETHOSTNAME */
+
+/* Define if you have the memmove function.  */
+#define HAVE_MEMMOVE 1
+
+/* Define if you have the mktemp function.  */
+#define HAVE_MKTEMP 1
+
+/* Define if you have the psignal function.  */
+/* #undef HAVE_PSIGNAL */
+
+/* Define if you have the pstat_getdynamic function.  */
+/* #undef HAVE_PSTAT_GETDYNAMIC */
+
+/* Define if you have the setegid function.  */
+/* #undef HAVE_SETEGID */
+
+/* Define if you have the seteuid function.  */
+/* #undef HAVE_SETEUID */
+
+/* Define if you have the setlinebuf function.  */
+/* #undef HAVE_SETLINEBUF */
+
+/* Define if you have the setregid function.  */
+/* #undef HAVE_SETREGID */
+
+/* Define if you have the setreuid function.  */
+/* #undef HAVE_SETREUID */
+
+/* Define if you have the sigsetmask function.  */
+/* #undef HAVE_SIGSETMASK */
+
+/* Define if you have the socket function.  */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the strcasecmp function.  */
+/* #undef HAVE_STRCASECMP */
+
+/* Define to 1 if you have the strcmpi function.  */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the stricmp function.  */
+/* #undef HAVE_STRICMP */
+
+/* Define if you have the strsignal function.  */
+/* #undef HAVE_STRSIGNAL */
+
+/* Define if you have the wait3 function.  */
+/* #undef HAVE_WAIT3 */
+
+/* Define if you have the waitpid function.  */
+/* #undef HAVE_WAITPID */
+
+/* Define if you have the <dirent.h> header file.  */
+#define HAVE_DIRENT_H 1
+
+/* Define if you have the <fcntl.h> header file.  */
+#define HAVE_FCNTL_H 1
+
+/* Define if you have the <limits.h> header file.  */
+#define HAVE_LIMITS_H 1
+
+/* Define if you have the <mach/mach.h> header file.  */
+/* #undef HAVE_MACH_MACH_H */
+
+/* Define if you have the <memory.h> header file.  */
+/* #undef HAVE_MEMORY_H */
+
+/* Define if you have the <ndir.h> header file.  */
+/* #undef HAVE_NDIR_H */
+
+/* Define if you have the <stdlib.h> header file.  */
+/* #undef HAVE_STDLIB_H */
+
+/* Define if you have the <string.h> header file.  */
+#define HAVE_STRING_H 1
+
+/* Define if you have the <sys/dir.h> header file.  */
+#define HAVE_SYS_DIR_H 1
+
+/* Define if you have the <sys/ndir.h> header file.  */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define if you have the <sys/param.h> header file.  */
+/* #undef HAVE_SYS_PARAM_H */
+
+/* Define if you have the <sys/timeb.h> header file.  */
+/* #undef HAVE_SYS_TIMEB_H */
+
+/* Define if you have the <sys/wait.h> header file.  */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define if you have the <unistd.h> header file.  */
+#define HAVE_UNISTD_H 1
+
+/* Define if you have the dgc library (-ldgc).  */
+/* #undef HAVE_LIBDGC */
+
+/* Define if you have the kstat library (-lkstat).  */
+/* #undef HAVE_LIBKSTAT */
+
+/* Define to 1 if you have the `isatty' function. */
+/* #undef HAVE_ISATTY */
+
+/* Define to 1 if you have the `ttyname' function. */
+/* #undef HAVE_TTYNAME */
+
+/* Define if you have the sun library (-lsun).  */
+/* #undef HAVE_LIBSUN */
+
+/* Output sync sypport */
+#define NO_OUTPUT_SYNC
+
+/* Define for Case Insensitve behavior */
+#define HAVE_CASE_INSENSITIVE_FS
+
+/* Build host information. */
+#define MAKE_HOST "Amiga"
+
+/* Define to `int' if <sys/types.h> does not define. */
+#define ssize_t int

src/config.h-vms.template

@@ -0,0 +1,433 @@
+/* config.h-vms. Generated by hand by Klaus Kämpf <kkaempf@rmi.de>      -*-C-*-
+
+Copyright (C) 1996-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* config.h.  Generated automatically by configure.  */
+/* config.h.in.  Generated automatically from configure.ac by autoheader.  */
+
+/* Pull in types.h here to get __CRTL_VER defined for old versions of the
+   compiler which don't define it. */
+#ifdef __DECC
+# include <types.h>
+#endif
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* #undef _ALL_SOURCE */
+#endif
+
+/* Define to 1 if NLS is requested.  */
+/* #undef ENABLE_NLS */
+
+/* Define as 1 if you have dcgettext.  */
+/* #undef HAVE_DCGETTEXT */
+
+/* Define as 1 if you have gettext and don't want to use GNU gettext.  */
+/* #undef HAVE_GETTEXT */
+
+/* Embed GNU Guile support */
+/* #undef HAVE_GUILE */
+
+/* Define to 1 if your locale.h file contains LC_MESSAGES.  */
+/* #undef HAVE_LC_MESSAGES */
+
+/* Define to the installation directory for locales.  */
+#define LOCALEDIR ""
+
+/* Define as 1 if you have the stpcpy function.  */
+/* #undef HAVE_STPCPY */
+
+/* Define to 1 if the closedir function returns void instead of int.  */
+/* #undef CLOSEDIR_VOID */
+
+/* Define to empty if the keyword does not work.  */
+/* #undef const */
+
+/* Define to one of _getb67, GETB67, getb67 for Cray-2 and Cray-YMP systems.
+   This function is required for alloca.c support on those systems.  */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define for DGUX with <sys/dg_sys_info.h>.  */
+/* #undef DGUX */
+
+/* Define to 1 if the 'getloadavg' function needs to be run setuid or setgid.  */
+/* #undef GETLOADAVG_PRIVILEGED */
+
+/* Define to 'unsigned long' or 'unsigned long long'
+   if <inttypes.h> doesn't define.  */
+#define uintmax_t unsigned long
+
+/* Define to 'int' if <sys/types.h> doesn't define.  */
+/* #undef gid_t */
+
+/* Define to 1 if you have alloca, as a function or macro.  */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).  */
+/* #undef HAVE_ALLOCA_H */
+
+/* Define to 1 if you have the fdopen function.  */
+#define HAVE_FDOPEN 1
+
+/* Define to 1 if your system has a working fnmatch function.  */
+/* #undef HAVE_FNMATCH */
+
+/* Define to 1 if your system has its own 'getloadavg' function.  */
+/* #undef HAVE_GETLOADAVG */
+
+/* Define to 1 if you have the getmntent function.  */
+/* #undef HAVE_GETMNTENT */
+
+/* Define to 1 if the 'long double' type works.  */
+/* #undef HAVE_LONG_DOUBLE */
+
+/* Define to 1 if you support file names longer than 14 characters.  */
+#define HAVE_LONG_FILE_NAMES 1
+
+/* Define to 1 if you have a working 'mmap' system call.  */
+/* #undef HAVE_MMAP */
+
+/* Define to 1 if system calls automatically restart after interruption
+   by a signal.  */
+/* #undef HAVE_RESTARTABLE_SYSCALLS */
+
+/* Define to 1 if your struct stat has st_blksize.  */
+/* #undef HAVE_ST_BLKSIZE */
+
+/* Define to 1 if your struct stat has st_blocks.  */
+/* #undef HAVE_ST_BLOCKS */
+
+/* Define to 1 if you have the strcoll function and it is properly defined.  */
+/* #undef HAVE_STRCOLL */
+
+/* Define to 1 if you have the strncasecmp' function. */
+#if __CRTL_VER >= 70000000
+#define HAVE_STRNCASECMP 1
+#endif
+
+/* Define to 1 if your struct stat has st_rdev.  */
+/* #undef HAVE_ST_RDEV */
+
+/* Define to 1 if you have the strftime function.  */
+/* #undef HAVE_STRFTIME */
+
+/* Define to 1 if you have <sys/wait.h> that is POSIX.1 compatible.  */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define to 1 if your struct tm has tm_zone.  */
+/* #undef HAVE_TM_ZONE */
+
+/* Define to 1 if you don't have tm_zone but do have the external array
+   tzname.  */
+/* #undef HAVE_TZNAME */
+
+/* Define to 1 if you have <unistd.h>.  */
+#ifdef __DECC
+#define HAVE_UNISTD_H 1
+#endif
+
+/* Define to 1 if utime(file, NULL) sets file's timestamp to the present.  */
+/* #undef HAVE_UTIME_NULL */
+
+/* Define to 1 if you have the wait3 system call.  */
+/* #undef HAVE_WAIT3 */
+
+/* Define to 1 if on MINIX.  */
+/* #undef _MINIX */
+
+/* Define to 1 if your struct nlist has an n_un member.  */
+/* #undef NLIST_NAME_UNION */
+
+/* Define to 1 if you have <nlist.h>.  */
+/* #undef NLIST_STRUCT */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together.  */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* Define to 'int' if <sys/types.h> doesn't define.  */
+/* I assume types.h is available for all 5.0 cc/cxx compilers */
+#if __DECC_VER < 50090000
+#define pid_t int
+#endif
+
+/* Define to 1 if the system does not provide POSIX.1 features except
+   with this defined.  */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for stat and other things to work.  */
+/* #undef _POSIX_SOURCE */
+
+/* Define as the return type of signal handlers (int or void).  */
+#define RETSIGTYPE void
+
+/* Define to 1 if the setvbuf function takes the buffering type as its second
+   argument and the buffer pointer as the third, as on System V
+   before release 3.  */
+/* #undef SETVBUF_REVERSED */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run-time.
+        STACK_DIRECTION > 0 => grows toward higher addresses
+        STACK_DIRECTION < 0 => grows toward lower addresses
+        STACK_DIRECTION = 0 => direction of growth unknown
+ */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if the 'S_IS*' macros in <sys/stat.h> do not work properly.  */
+/* #undef STAT_MACROS_BROKEN */
+
+/* Define to 1 if you have the ANSI C header files.  */
+/* #undef STDC_HEADERS */
+
+/* Define on System V Release 4.  */
+/* #undef SVR4 */
+
+/* Define to 1 if 'sys_siglist' is declared by <signal.h>.  */
+/* #undef SYS_SIGLIST_DECLARED */
+
+/* Define to 'int' if <sys/types.h> doesn't define.  */
+#if __DECC_VER < 50090000
+#define uid_t int
+#endif
+
+/* Define for Encore UMAX.  */
+/* #undef UMAX */
+
+/* Define for Encore UMAX 4.3 that has <inq_status/cpustats.h>
+   instead of <sys/cpustats.h>.  */
+/* #undef UMAX4_3 */
+
+/* Name of this package (needed by automake) */
+#define PACKAGE "%PACKAGE%"
+
+/* Version of this package (needed by automake) */
+#define VERSION "%VERSION%"
+
+/* Define to the name of the SCCS 'get' command.  */
+/* #undef SCCS_GET */
+
+/* Define this if the SCCS 'get' command understands the '-G<file>' option.  */
+/* #undef SCCS_GET_MINUS_G */
+
+/* Define this to enable job server support in GNU make.  */
+/* #undef MAKE_JOBSERVER */
+
+/* Define to be the nanoseconds member of struct stat's st_mtim,
+   if it exists.  */
+/* #undef ST_MTIM_NSEC */
+
+/* Define to 1 if the C library defines the variable 'sys_siglist'.  */
+/* #undefine HAVE_SYS_SIGLIST */
+
+/* Define to 1 if the C library defines the variable '_sys_siglist'.  */
+/* #undef HAVE__SYS_SIGLIST */
+
+/* Define to 1 if you have the 'union wait' type in <sys/wait.h>.  */
+/* #undef HAVE_UNION_WAIT */
+
+/* Define to 1 if you have the dup2 function.  */
+#define HAVE_DUP2 1
+
+/* Define to 1 if you have the getcwd function.  */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the getgroups function.  */
+/* #undef HAVE_GETGROUPS */
+
+/* Define to 1 if you have the gethostbyname function.  */
+/* #undef HAVE_GETHOSTBYNAME */
+
+/* Define to 1 if you have the gethostname function.  */
+/* #undef HAVE_GETHOSTNAME */
+
+/* Define to 1 if you have the memmove function.  */
+#define HAVE_MEMMOVE 1
+
+/* Define to 1 if you have the mktemp function.  */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the psignal function.  */
+/* #undef HAVE_PSIGNAL */
+
+/* Define to 1 if you have the pstat_getdynamic function.  */
+/* #undef HAVE_PSTAT_GETDYNAMIC */
+
+/* Define to 1 if you have the setegid function.  */
+/* #undef HAVE_SETEGID */
+
+/* Define to 1 if you have the seteuid function.  */
+/* #undef HAVE_SETEUID */
+
+/* Define to 1 if you have the setlinebuf function.  */
+/* #undef HAVE_SETLINEBUF */
+
+/* Define to 1 if you have the setregid function.  */
+/* #undefine HAVE_SETREGID */
+
+/* Define to 1 if you have the setreuid function.  */
+/* #define HAVE_SETREUID */
+
+/* Define to 1 if you have the sigsetmask function.  */
+#define HAVE_SIGSETMASK 1
+
+/* Define to 1 if you have the socket function.  */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the strcasecmp function.  */
+#define HAVE_STRCASECMP 1
+
+/* Define to 1 if you have the strcmpi function.  */
+/* #undef HAVE_STRCMPI */
+
+/* Define to 1 if you have the stricmp function.  */
+/* #undef HAVE_STRICMP */
+
+/* Define to 1 if you have the strsignal function.  */
+/* #undef HAVE_STRSIGNAL */
+
+/* Define to 1 if you have the wait3 function.  */
+/* #undef HAVE_WAIT3 */
+
+/* Define to 1 if you have the waitpid function.  */
+/* #undef HAVE_WAITPID */
+
+/* Define to 1 if you have the <dirent.h> header file.  */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you have the <fcntl.h> header file.  */
+#ifdef __DECC
+#define HAVE_FCNTL_H 1
+#endif
+
+/* Define to 1 if you have the <limits.h> header file.  */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <mach/mach.h> header file.  */
+/* #undef HAVE_MACH_MACH_H */
+
+/* Define to 1 if you have the <memory.h> header file.  */
+/* #undef HAVE_MEMORY_H */
+
+/* Define to 1 if you have the <ndir.h> header file.  */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <stdlib.h> header file.  */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <string.h> header file.  */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <sys/dir.h> header file.  */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/ndir.h> header file.  */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file.  */
+/* #undef HAVE_SYS_PARAM_H */
+
+/* Define to 1 if you have the <sys/timeb.h> header file.  */
+#ifndef __GNUC__
+#define HAVE_SYS_TIMEB_H 1
+#endif
+
+/* Define to 1 if you have the <sys/wait.h> header file.  */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define to 1 if you have the dgc library (-ldgc).  */
+/* #undef HAVE_LIBDGC */
+
+/* Define to 1 if you have the kstat library (-lkstat).  */
+/* #undef HAVE_LIBKSTAT *
+
+/* Define to 1 if you have the sun library (-lsun).  */
+/* #undef HAVE_LIBSUN */
+
+/* Define to 1 if you have the `isatty' function. */
+/* #undef HAVE_ISATTY */
+
+/* Define to 1 if you have the `ttyname' function. */
+/* #undef HAVE_TTYNAME */
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 0
+
+/* Define for case insensitve filenames */
+#define HAVE_CASE_INSENSITIVE_FS 1
+
+/* VMS specific, define it if you want to use case sensitive targets */
+/* #undef WANT_CASE_SENSITIVE_TARGETS */
+
+/* VMS specific, V7.0 has opendir() and friends, so it's undefined */
+/* If you want to use non-VMS code for opendir() etc. on V7.0 and greater
+   define the first or both macros AND change the compile command to get the
+   non-VMS versions linked: (prefix=(all,except=(opendir,...  */
+/* #undef HAVE_VMSDIR_H */
+/* #undef _DIRENT_HAVE_D_NAMLEN */
+
+/* On older systems without 7.0 backport of CRTL use non-VMS code for opendir() etc. */
+#if __CRTL_VER < 70000000
+# define HAVE_VMSDIR_H 1
+#endif
+
+#if defined(HAVE_VMSDIR_H) && defined(HAVE_DIRENT_H)
+#undef HAVE_DIRENT_H
+#endif
+
+#define HAVE_STDLIB_H 1
+#define INCLUDEDIR "sys$sysroot:[syslib]"
+#define LIBDIR "sys$sysroot:[syslib]"
+
+/* Don't use RTL functions of OpenVMS */
+#ifdef __DECC
+#include <stdio.h>
+#include <unistd.h>
+#define getopt   gnu_getopt
+#define optarg   gnu_optarg
+#define optopt   gnu_optopt
+#define optind   gnu_optind
+#define opterr   gnu_opterr
+#define globfree gnu_globfree
+#define glob     gnu_glob
+#endif
+
+/* Define if using alloca.c.  */
+/* #undef C_ALLOCA */
+/* maybe this should be placed into makeint.h */
+#if     defined(__VAX) && defined(__DECC)
+#define alloca(n)       __ALLOCA(n)
+#endif
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+   significant byte first (like Motorola and SPARC, unlike Intel). */
+/* #  undef WORDS_BIGENDIAN */
+
+/* Output sync sypport */
+#define NO_OUTPUT_SYNC
+
+/* Define to 1 to write even short single-line actions into a VMS/DCL command
+   file; this also enables exporting make environment variables into the
+   (sub-)process, which executes the action.
+   The usual make rules apply whether a shell variable - here a DCL symbol or
+   VMS logical [see CRTL getenv()] - is added to the make environment and
+   is exported. */
+#define USE_DCL_COM_FILE 1
+
+/* Build host information. */
+#define MAKE_HOST "VMS"

src/config.h.W32.template

@@ -0,0 +1,538 @@
+/* config.h.W32 -- hand-massaged config.h file for Windows builds       -*-C-*-
+
+Copyright (C) 1996-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Suppress some Visual C++ warnings.
+   Maybe after the code cleanup for ISO C we can remove some/all of these.  */
+#if _MSC_VER > 1000
+# pragma warning(disable:4100) /* unreferenced formal parameter */
+# pragma warning(disable:4102) /* unreferenced label */
+# pragma warning(disable:4127) /* conditional expression is constant */
+# pragma warning(disable:4131) /* uses old-style declarator */
+# pragma warning(disable:4702) /* unreachable code */
+# define _CRT_SECURE_NO_WARNINGS  /* function or variable may be unsafe */
+# define _CRT_NONSTDC_NO_WARNINGS /* functions w/o a leading underscore */
+#endif
+
+/* Define to 1 if the 'closedir' function returns void instead of 'int'. */
+/* #undef CLOSEDIR_VOID */
+
+/* Define to one of '_getb67', 'GETB67', 'getb67' for Cray-2 and Cray-YMP
+   systems. This function is required for 'alloca.c' support on those systems.
+   */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define to 1 if using 'alloca.c'. */
+/* #undef C_ALLOCA */
+
+/* Define to 1 if using 'getloadavg.c'. */
+#define C_GETLOADAVG 1
+
+/* Define to 1 for DGUX with <sys/dg_sys_info.h>. */
+/* #undef DGUX */
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+/* #undef ENABLE_NLS */
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 0
+
+/* Define to 1 if the 'getloadavg' function needs to be run setuid or setgid.
+   */
+/* #undef GETLOADAVG_PRIVILEGED */
+
+/* Define to 1 if you have 'alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have <alloca.h> and it should be used (not on Ultrix).
+   */
+/* #undef HAVE_ALLOCA_H */
+
+/* Define to 1 if you have the 'atexit' function. */
+#define HAVE_ATEXIT 1
+
+/* Use case insensitive file names */
+/* #undef HAVE_CASE_INSENSITIVE_FS */
+
+/* Define to 1 if you have the clock_gettime function. */
+/* #undef HAVE_CLOCK_GETTIME */
+
+/* Embed GNU Guile support.  Windows build sets this on the
+   compilation command line.  */
+/* #undef HAVE_GUILE */
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+/* #undef HAVE_DCGETTEXT */
+
+/* Define to 1 if you have the declaration of 'bsd_signal', and to 0 if you
+   don't. */
+#define HAVE_DECL_BSD_SIGNAL 0
+
+/* Define to 1 if you have the declaration of 'sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL_SYS_SIGLIST 0
+
+/* Define to 1 if you have the declaration of '_sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL__SYS_SIGLIST 0
+
+/* Define to 1 if you have the declaration of '__sys_siglist', and to 0 if you
+   don't. */
+#define HAVE_DECL___SYS_SIGLIST 0
+
+/* Define to 1 if you have the <dirent.h> header file, and it defines 'DIR'.
+   */
+#define HAVE_DIRENT_H 1
+
+/* Define to 1 if you have the <direct.h> header file, and it defines getcwd()
+   and chdir().
+   */
+#if (defined(_MSC_VER) || defined(__BORLANDC__)) && !defined(__INTERIX)
+# define HAVE_DIRECT_H 1
+#endif
+
+/* Use platform specific coding */
+#define HAVE_DOS_PATHS 1
+
+/* Define to 1 if you have the 'dup2' function. */
+#define HAVE_DUP2 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have the 'fdopen' function. */
+#ifdef __MINGW32__
+#define HAVE_FDOPEN 1
+#endif
+
+/* Define to 1 if you have the 'fileno' function. */
+#define HAVE_FILENO 1
+
+/* Define to 1 if you have the 'getcwd' function.  */
+#define HAVE_GETCWD 1
+
+/* Define to 1 if you have the 'getgroups' function. */
+/* #undef HAVE_GETGROUPS */
+
+/* Define to 1 if you have the 'gethostbyname' function. */
+/* #undef HAVE_GETHOSTBYNAME */
+
+/* Define to 1 if you have the 'gethostname' function. */
+/* #undef HAVE_GETHOSTNAME */
+
+/* Define to 1 if you have the 'getloadavg' function. */
+/* #undef HAVE_GETLOADAVG */
+
+/* Define to 1 if you have the 'getrlimit' function. */
+/* #undef HAVE_GETRLIMIT */
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+/* #undef HAVE_GETTEXT */
+
+/* Define to 1 if you have a standard gettimeofday function */
+#ifdef __MINGW32__
+#define HAVE_GETTIMEOFDAY 1
+#endif
+
+/* Define if you have the iconv() function. */
+/* #undef HAVE_ICONV */
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_INTTYPES_H 1
+#endif
+
+/* Define to 1 if you have the 'dgc' library (-ldgc). */
+/* #undef HAVE_LIBDGC */
+
+/* Define to 1 if you have the 'kstat' library (-lkstat). */
+/* #undef HAVE_LIBKSTAT */
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define to 1 if you have the <locale.h> header file. */
+/*#define HAVE_LOCALE_H 1*/
+
+/* Define to 1 if you have the 'lstat' function. */
+/* #undef HAVE_LSTAT */
+
+/* Define to 1 if you have the <mach/mach.h> header file. */
+/* #undef HAVE_MACH_MACH_H */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the 'mkstemp' function. */
+/* #undef HAVE_MKSTEMP */
+
+/* Define to 1 if you have the 'mktemp' function. */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the <ndir.h> header file, and it defines 'DIR'. */
+/* #undef HAVE_NDIR_H */
+
+/* Define to 1 if you have the <nlist.h> header file. */
+/* #undef HAVE_NLIST_H */
+
+/* Define to 1 if you have the 'pipe' function. */
+/* #undef HAVE_PIPE */
+
+/* Define to 1 if you have the 'pstat_getdynamic' function. */
+/* #undef HAVE_PSTAT_GETDYNAMIC */
+
+/* Define to 1 if you have the 'readlink' function. */
+/* #undef HAVE_READLINK */
+
+/* Define to 1 if you have the 'realpath' function. */
+/* #undef HAVE_REALPATH */
+
+/* Define to 1 if <signal.h> defines the SA_RESTART constant. */
+/* #undef HAVE_SA_RESTART */
+
+/* Define to 1 if you have the 'setegid' function. */
+/* #undef HAVE_SETEGID */
+
+/* Define to 1 if you have the 'seteuid' function. */
+/* #undef HAVE_SETEUID */
+
+/* Define to 1 if you have the 'setlinebuf' function. */
+/* #undef HAVE_SETLINEBUF */
+
+/* Define to 1 if you have the 'setlocale' function. */
+/*#define HAVE_SETLOCALE 1*/
+
+/* Define to 1 if you have the 'setregid' function. */
+/* #undef HAVE_SETREGID */
+
+/* Define to 1 if you have the 'setreuid' function. */
+/* #undef HAVE_SETREUID */
+
+/* Define to 1 if you have the 'setrlimit' function. */
+/* #undef HAVE_SETRLIMIT */
+
+/* Define to 1 if you have the 'setvbuf' function. */
+#define HAVE_SETVBUF 1
+
+/* Define to 1 if you have the 'sigaction' function. */
+/* #undef HAVE_SIGACTION */
+
+/* Define to 1 if you have the 'sigsetmask' function. */
+/* #undef HAVE_SIGSETMASK */
+
+/* Define to 1 if you have the 'socket' function. */
+/* #undef HAVE_SOCKET */
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_STDINT_H 1
+#endif
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the 'strcasecmp' function. */
+#ifdef __MINGW32__
+#define HAVE_STRCASECMP 1
+#endif
+
+/* Define to 1 if you have the 'strcmpi' function. */
+#define HAVE_STRCMPI 1
+
+/* Define to 1 if you have the 'strcoll' function and it is properly defined.
+   */
+#define HAVE_STRCOLL 1
+
+/* Define to 1 if you have the 'strdup' function. */
+#define HAVE_STRDUP 1
+
+/* Define to 1 if you have the 'stricmp' function. */
+#define HAVE_STRICMP 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_STRINGS_H 1
+#endif
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the 'strncasecmp' function. */
+#ifdef __MINGW32__
+#define HAVE_STRNCASECMP 1
+#endif
+
+/* Define to 1 if you have the 'strncmpi' function. */
+/* #undef HAVE_STRNCMPI */
+
+/* Define to 1 if you have the 'strndup' function. */
+/* #undef HAVE_STRNDUP */
+
+/* Define to 1 if you have the 'strnicmp' function. */
+#ifdef __MINGW32__
+#define HAVE_STRNICMP 1
+#endif
+
+/* Define to 1 if you have the 'strsignal' function. */
+/* #undef HAVE_STRSIGNAL */
+
+/* Define to 1 if you have the `isatty' function. */
+#define HAVE_ISATTY 1
+
+/* Define to 1 if you have the `ttyname' function. */
+#define HAVE_TTYNAME 1
+char *ttyname (int);
+
+/* Define to 1 if 'n_un.n_name' is a member of 'struct nlist'. */
+/* #undef HAVE_STRUCT_NLIST_N_UN_N_NAME */
+
+/* Define to 1 if you have the <sys/dir.h> header file, and it defines 'DIR'.
+   */
+/* #undef HAVE_SYS_DIR_H */
+
+/* Define to 1 if you have the <sys/ndir.h> header file, and it defines 'DIR'.
+   */
+/* #undef HAVE_SYS_NDIR_H */
+
+/* Define to 1 if you have the <sys/param.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_SYS_PARAM_H 1
+#endif
+
+/* Define to 1 if you have the <sys/resource.h> header file. */
+/* #undef HAVE_SYS_RESOURCE_H */
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/timeb.h> header file. */
+#define HAVE_SYS_TIMEB_H 1
+
+/* Define to 1 if you have the <sys/time.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_SYS_TIME_H 1
+#endif
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <sys/wait.h> header file. */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define to 1 if you have the \'union wait' type in <sys/wait.h>. */
+/* #undef HAVE_UNION_WAIT */
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#ifdef __MINGW32__
+#define HAVE_UNISTD_H 1
+#endif
+
+/* Define to 1 if you have the 'wait3' function. */
+/* #undef HAVE_WAIT3 */
+
+/* Define to 1 if you have the 'waitpid' function. */
+/* #undef HAVE_WAITPID */
+
+/* Build host information. */
+#define MAKE_HOST "Windows32"
+
+/* Define to 1 to enable job server support in GNU make. */
+#define MAKE_JOBSERVER 1
+
+/* Define to 1 to enable 'load' support in GNU make. */
+#define MAKE_LOAD 1
+
+/* Define to 1 to enable symbolic link timestamp checking. */
+/* #undef MAKE_SYMLINKS */
+
+/* Define to 1 if your 'struct nlist' has an 'n_un' member. Obsolete, depend
+   on 'HAVE_STRUCT_NLIST_N_UN_N_NAME */
+/* #undef NLIST_NAME_UNION */
+
+/* Define to 1 if struct nlist.n_name is a pointer rather than an array. */
+/* #undef NLIST_STRUCT */
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* Name of this package (needed by automake) */
+#define PACKAGE "%PACKAGE%"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bug-make@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "GNU make"
+
+/* Define to the home page for this package. */
+#define PACKAGE_URL "http://www.gnu.org/software/make/"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "%VERSION%"
+
+/* Define to the character that separates directories in PATH. */
+#define PATH_SEPARATOR_CHAR ';'
+
+/* Define as the return type of signal handlers ('int' or 'void'). */
+#define RETSIGTYPE void
+
+/* Define to the name of the SCCS 'get' command. */
+#define SCCS_GET "echo no sccs get"
+
+/* Define this if the SCCS 'get' command understands the '-G<file>' option. */
+/* #undef SCCS_GET_MINUS_G */
+
+/* Define to 1 if the 'setvbuf' function takes the buffering type as its
+   second argument and the buffer pointer as the third, as on System V before
+   release 3. */
+/* #undef SETVBUF_REVERSED */
+
+/* If using the C implementation of alloca, define if you know the
+   direction of stack growth for your system; otherwise it will be
+   automatically deduced at run time.
+        STACK_DIRECTION > 0 => grows toward higher addresses
+        STACK_DIRECTION < 0 => grows toward lower addresses
+        STACK_DIRECTION = 0 => direction of growth unknown */
+/* #undef STACK_DIRECTION */
+
+/* Define to 1 if the 'S_IS*' macros in <sys/stat.h> do not work properly. */
+/* #undef STAT_MACROS_BROKEN */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define if struct stat contains a nanoseconds field */
+/* #undef ST_MTIM_NSEC */
+
+/* Define to 1 on System V Release 4. */
+/* #undef SVR4 */
+
+/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
+#ifdef __MINGW32__
+#define TIME_WITH_SYS_TIME 1
+#endif
+
+/* Define to 1 for Encore UMAX. */
+/* #undef UMAX */
+
+/* Define to 1 for Encore UMAX 4.3 that has <inq_status/cpustats.h> instead of
+   <sys/cpustats.h>. */
+/* #undef UMAX4_3 */
+
+/* Version number of package */
+#define VERSION "%VERSION%"
+
+/* Define if using the dmalloc debugging malloc package */
+/* #undef WITH_DMALLOC */
+
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
+#ifndef _ALL_SOURCE
+/* # undef _ALL_SOURCE */
+#endif
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+   significant byte first (like Motorola and SPARC, unlike Intel). */
+/* #  undef WORDS_BIGENDIAN */
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+/* #undef _FILE_OFFSET_BITS */
+
+/* Define for large files, on AIX-style hosts. */
+/* #undef _LARGE_FILES */
+
+/* Define to 1 if on MINIX. */
+/* #undef _MINIX */
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+/* #undef _POSIX_1_SOURCE */
+
+/* Define to 1 if you need to in order for 'stat' and other things to work. */
+/* #undef _POSIX_SOURCE */
+
+/* Define to empty if 'const' does not conform to ANSI C. */
+/* #undef const */
+
+#include <sys/types.h>
+
+/* Define to 'int' if <sys/types.h> doesn't define. */
+#define gid_t int
+
+/* Define to 'int' if <sys/types.h> does not define. */
+/* GCC 4.x reportedly defines pid_t.  */
+#ifndef _PID_T_
+#ifdef _WIN64
+#define pid_t __int64
+#else
+#define pid_t int
+#endif
+#endif
+
+/* Define to `int' if <sys/types.h> does not define. */
+#define ssize_t int
+
+/* Define to 'int' if <sys/types.h> doesn't define. */
+#define uid_t int
+
+/* Define uintmax_t if not defined in <stdint.h> or <inttypes.h>. */
+#if !HAVE_STDINT_H && !HAVE_INTTYPES_H
+#define uintmax_t unsigned long
+#endif
+
+/* Define if you have <sys/wait.h> that is POSIX.1 compatible.  */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define to the installation directory for locales.  */
+#define LOCALEDIR ""
+
+/*
+ * Refer to README.W32 for info on the following settings
+ */
+
+
+/*
+ * If you have a shell that does not grok 'sh -c quoted-command-line'
+ * correctly, you need this setting. Please see below for specific
+ * shell support.
+ */
+/*#define BATCH_MODE_ONLY_SHELL 1 */
+
+/*
+ * Define if you have the Cygnus "Cygwin" GNU Windows32 tool set.
+ * Do NOT define BATCH_MODE_ONLY_SHELL if you define HAVE_CYGWIN_SHELL
+ */
+/*#define HAVE_CYGWIN_SHELL 1 */
+
+/*
+ * Define if you have the MKS tool set or shell. Do NOT define
+ * BATCH_MODE_ONLY_SHELL if you define HAVE_MKS_SHELL
+ */
+/*#define HAVE_MKS_SHELL 1 */
+
+/*
+ * Enforce the mutual exclusivity restriction.
+ */
+#ifdef HAVE_MKS_SHELL
+#undef BATCH_MODE_ONLY_SHELL
+#endif
+
+#ifdef HAVE_CYGWIN_SHELL
+#undef BATCH_MODE_ONLY_SHELL
+#endif

src/configh.dos.template

@@ -0,0 +1,116 @@
+/* configh.dos -- hand-massaged config.h file for MS-DOS builds         -*-C-*-
+
+Copyright (C) 1994-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Include this header to make __DJGPP_MINOR__ available because DJGPP ports
+   of GCC 4.3.0 and later no longer do it automatically.  */
+#include <sys/version.h>
+
+/* Many things are defined already by a system header.  */
+#include <sys/config.h>
+
+#if __DJGPP__ > 2 || __DJGPP_MINOR__ > 1
+
+/* Define to 1 if 'sys_siglist' is declared by <signal.h> or <unistd.h>. */
+# define SYS_SIGLIST_DECLARED 1
+
+/* Define to 1 if the C library defines the variable '_sys_siglist'.  */
+# define HAVE_DECL_SYS_SIGLIST 1
+
+#else
+
+/* Define NSIG.  */
+# define NSIG SIGMAX
+
+#endif
+
+/* Use high resolution file timestamps if nonzero. */
+#define FILE_TIMESTAMP_HI_RES 0
+
+/* Define to 1 if you have 'alloca', as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define to 1 if you have the fdopen function.  */
+#define HAVE_FDOPEN 1
+
+/* Define to 1 if you have the 'getgroups' function. */
+#define HAVE_GETGROUPS 1
+
+/* Define to 1 if you have the <memory.h> header file.  */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the mkstemp function.  */
+#define HAVE_MKSTEMP 1
+
+/* Define to 1 if you have the 'mktemp' function. */
+#define HAVE_MKTEMP 1
+
+/* Define to 1 if you have the 'setlinebuf' function. */
+#define HAVE_SETLINEBUF 1
+
+/* Define to 1 if you have the 'setvbuf' function. */
+#define HAVE_SETVBUF 1
+
+#define SCCS_GET "get"
+
+/* Define to 'unsigned long' or 'unsigned long long'
+   if <inttypes.h> doesn't define.  */
+#define uintmax_t unsigned long long
+
+/* Define the type of the first arg to select().  */
+#define fd_set_size_t int
+
+/* Define to 1 if you have the select function.  */
+#define HAVE_SELECT 1
+
+/* Define to 1 if you have the stricmp function.  */
+#define HAVE_STRICMP 1
+
+/* Define to 1 if you have the 'strncasecmp' function. */
+#define HAVE_STRNCASECMP 1
+
+/* Name of the package */
+#define PACKAGE "%PACKAGE%"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "bug-%PACKAGE%@gnu.org"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "GNU %PACKAGE%"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "GNU %PACKAGE% %VERSION%"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "%PACKAGE%"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "%VERSION%"
+
+/* Output sync sypport */
+#define NO_OUTPUT_SYNC
+
+/* Version number of package */
+#define VERSION "%VERSION%"
+
+/* Build host information. */
+#define MAKE_HOST "i386-pc-msdosdjgpp"
+
+/* Grok DOS paths (drive specs and backslash path element separators) */
+#define HAVE_DOS_PATHS
+
+/* Define to `int' if <sys/types.h> does not define. */
+#define ssize_t int

src/debug.h

@@ -0,0 +1,39 @@
+/* Debugging macros and interface.
+Copyright (C) 1999-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#define DB_NONE         (0x000)
+#define DB_BASIC        (0x001)
+#define DB_VERBOSE      (0x002)
+#define DB_JOBS         (0x004)
+#define DB_IMPLICIT     (0x008)
+#define DB_MAKEFILES    (0x100)
+
+#define DB_ALL          (0xfff)
+
+extern int db_level;
+
+#define ISDB(_l)    ((_l)&db_level)
+
+/* When adding macros to this list be sure to update the value of
+   XGETTEXT_OPTIONS in the po/Makevars file.  */
+#define DBS(_l,_x)  do{ if(ISDB(_l)) {print_spaces (depth); \
+                                      printf _x; fflush (stdout);} }while(0)
+
+#define DBF(_l,_x)  do{ if(ISDB(_l)) {print_spaces (depth); \
+                                      printf (_x, file->name); \
+                                      fflush (stdout);} }while(0)
+
+#define DB(_l,_x)   do{ if(ISDB(_l)) {printf _x; fflush (stdout);} }while(0)

src/default.c

@@ -0,0 +1,757 @@
+/* Data base of default implicit rules for GNU Make.
+Copyright (C) 1988-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include <assert.h>
+
+#include "filedef.h"
+#include "variable.h"
+#include "rule.h"
+#include "dep.h"
+#include "job.h"
+#include "commands.h"
+
+/* Define GCC_IS_NATIVE if gcc is the native development environment on
+   your system (gcc/bison/flex vs cc/yacc/lex).  */
+#if defined(__MSDOS__) || defined(__EMX__)
+# define GCC_IS_NATIVE
+#endif
+
+
+/* This is the default list of suffixes for suffix rules.
+   '.s' must come last, so that a '.o' file will be made from
+   a '.c' or '.p' or ... file rather than from a .s file.  */
+
+static char default_suffixes[]
+#ifdef VMS
+  /* VMS should include all UNIX/POSIX + some VMS extensions */
+  = ".out .exe .a .olb .hlb .tlb .mlb .ln .o .obj .c .cxx .cc .cpp .pas .p \
+.for .f .r .y .l .ym .yl .mar .s .ss .i .ii .mod .sym .def .h .info .dvi \
+.tex .texinfo .texi .txinfo .mem .hlp .brn .rnh .rno .rnt .rnx .w .ch .cweb \
+.web .com .sh .elc .el";
+#elif defined(__EMX__)
+  = ".out .a .ln .o .c .cc .C .cpp .p .f .F .m .r .y .l .ym .yl .s .S \
+.mod .sym .def .h .info .dvi .tex .texinfo .texi .txinfo \
+.w .ch .web .sh .elc .el .obj .exe .dll .lib";
+#else
+  = ".out .a .ln .o .c .cc .C .cpp .p .f .F .m .r .y .l .ym .yl .s .S \
+.mod .sym .def .h .info .dvi .tex .texinfo .texi .txinfo \
+.w .ch .web .sh .elc .el";
+#endif
+
+static struct pspec default_pattern_rules[] =
+  {
+#ifdef VMS
+    { "(%)", "%",
+        "@if f$$search(\"$@\") .eqs. \"\" then $(LIBRARY)/CREATE/"
+         "$(or "
+          "$(patsubst %,TEXT,$(filter %.tlb %.TLB,$@)),"
+          "$(patsubst %,HELP,$(filter %.hlb %.HLB,$@)),"
+          "$(patsubst %,MACRO,$(filter %.mlb %.MLB,$@)),"
+          "$(and "
+           "$(patsubst %,SHARE,$(filter %.olb %.OLB,$@)),"
+           "$(patsubst %,SHARE,$(filter %.exe %.EXE,$<))),"
+          "OBJECT)"
+         " $@\n"
+        "$(AR) $(ARFLAGS) $@ $<" },
+
+#else
+    { "(%)", "%",
+        "$(AR) $(ARFLAGS) $@ $<" },
+#endif
+    /* The X.out rules are only in BSD's default set because
+       BSD Make has no null-suffix rules, so 'foo.out' and
+       'foo' are the same thing.  */
+#ifdef VMS
+    { "%.exe", "%",
+        "$(CP) $< $@" },
+
+#endif
+    { "%.out", "%",
+        "@rm -f $@ \n cp $< $@" },
+
+    /* Syntax is "ctangle foo.w foo.ch foo.c".  */
+    { "%.c", "%.w %.ch",
+        "$(CTANGLE) $^ $@" },
+    { "%.tex", "%.w %.ch",
+        "$(CWEAVE) $^ $@" },
+
+    { 0, 0, 0 }
+  };
+
+static struct pspec default_terminal_rules[] =
+  {
+#ifdef VMS
+
+    /* RCS.  */
+    { "%", "%$$5lv", /* Multinet style */
+        "if f$$search(\"$@\") .nes. \"\" then +$(CHECKOUT,v)" },
+    { "%", "[.$$rcs]%$$5lv", /* Multinet style */
+        "if f$$search(\"$@\") .nes. \"\" then +$(CHECKOUT,v)" },
+    { "%", "%_v", /* Normal style */
+        "if f$$search(\"$@\") .nes. \"\" then +$(CHECKOUT,v)" },
+    { "%", "[.rcs]%_v", /* Normal style */
+        "if f$$search(\"$@\") .nes. \"\" then +$(CHECKOUT,v)" },
+
+    /* SCCS.  */
+        /* ain't no SCCS on vms */
+
+#else
+    /* RCS.  */
+    { "%", "%,v",
+        "$(CHECKOUT,v)" },
+    { "%", "RCS/%,v",
+        "$(CHECKOUT,v)" },
+    { "%", "RCS/%",
+        "$(CHECKOUT,v)" },
+
+    /* SCCS.  */
+    { "%", "s.%",
+        "$(GET) $(GFLAGS) $(SCCS_OUTPUT_OPTION) $<" },
+    { "%", "SCCS/s.%",
+        "$(GET) $(GFLAGS) $(SCCS_OUTPUT_OPTION) $<" },
+#endif /* !VMS */
+    { 0, 0, 0 }
+  };
+
+static const char *default_suffix_rules[] =
+  {
+#ifdef VMS
+    ".o",
+    "$(LINK.obj) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".obj",
+    "$(LINK.obj) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".s",
+    "$(LINK.s) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".S",
+    "$(LINK.S) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".c",
+    "$(LINK.c) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".cc",
+    "$(LINK.cc) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".C",
+    "$(LINK.C) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".cpp",
+    "$(LINK.cpp) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".f",
+    "$(LINK.f) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".m",
+    "$(LINK.m) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".p",
+    "$(LINK.p) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".F",
+    "$(LINK.F) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".r",
+    "$(LINK.r) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".mod",
+    "$(COMPILE.mod) -o $@ -e $@ $^",
+
+    ".def.sym",
+    "$(COMPILE.def) -o $@ $<",
+
+    ".sh",
+    "copy $< >$@",
+
+    ".obj.exe",
+    "$(LINK.obj) $^ $(LOADLIBES) $(LDLIBS) $(CRT0) /exe=$@",
+    ".mar.exe",
+    "$(COMPILE.mar) $^ \n $(LINK.obj) $(subst .mar,.obj,$^) $(LOADLIBES) $(LDLIBS) $(CRT0) /exe=$@",
+    ".s.o",
+    "$(COMPILE.s) -o $@ $<",
+    ".s.exe",
+    "$(COMPILE.s) $^ \n $(LINK.obj) $(subst .s,.obj,$^) $(LOADLIBES) $(LDLIBS) $(CRT0) /exe=$@",
+    ".c.exe",
+    "$(COMPILE.c) $^ \n $(LINK.obj) $(subst .c,.obj,$^) $(LOADLIBES) $(LDLIBS) $(CRT0) /exe=$@",
+    ".cc.exe",
+#ifdef GCC_IS_NATIVE
+    "$(COMPILE.cc) $^ \n $(LINK.obj) $(CXXSTARTUP),sys$$disk:[]$(subst .cc,.obj,$^) $(LOADLIBES) $(LXLIBS) $(LDLIBS) $(CXXRT0) /exe=$@",
+#else
+    "$(COMPILE.cc) $^ \n $(CXXLINK.obj) $(subst .cc,.obj,$^) $(LOADLIBES) $(LXLIBS) $(LDLIBS) $(CXXRT0) /exe=$@",
+    ".cxx.exe",
+    "$(COMPILE.cxx) $^ \n $(CXXLINK.obj) $(subst .cxx,.obj,$^) $(LOADLIBES) $(LXLIBS) $(LDLIBS) $(CXXRT0) /exe=$@",
+#endif
+    ".for.exe",
+    "$(COMPILE.for) $^ \n $(LINK.obj) $(subst .for,.obj,$^) $(LOADLIBES) $(LDLIBS) /exe=$@",
+    ".pas.exe",
+    "$(COMPILE.pas) $^ \n $(LINK.obj) $(subst .pas,.obj,$^) $(LOADLIBES) $(LDLIBS) /exe=$@",
+
+    ".com",
+    "copy $< >$@",
+
+    ".mar.obj",
+    "$(COMPILE.mar) /obj=$@ $<",
+    ".s.obj",
+    "$(COMPILE.s) /obj=$@ $<",
+    ".ss.obj",
+    "$(COMPILE.s) /obj=$@ $<",
+    ".c.i",
+    "$(COMPILE.c)/prep /list=$@ $<",
+    ".c.s",
+    "$(COMPILE.c)/noobj/machine /list=$@ $<",
+    ".i.s",
+    "$(COMPILE.c)/noprep/noobj/machine /list=$@ $<",
+    ".c.obj",
+    "$(COMPILE.c) /obj=$@ $<",
+    ".c.o",
+    "$(COMPILE.c) /obj=$@ $<",
+    ".cc.ii",
+    "$(COMPILE.cc)/prep /list=$@ $<",
+    ".cc.ss",
+    "$(COMPILE.cc)/noobj/machine /list=$@ $<",
+    ".ii.ss",
+    "$(COMPILE.cc)/noprep/noobj/machine /list=$@ $<",
+    ".cc.obj",
+    "$(COMPILE.cc) /obj=$@ $<",
+    ".cc.o",
+    "$(COMPILE.cc) /obj=$@ $<",
+    ".cxx.obj",
+    "$(COMPILE.cxx) /obj=$@ $<",
+    ".cxx.o",
+    "$(COMPILE.cxx) /obj=$@ $<",
+    ".for.obj",
+    "$(COMPILE.for) /obj=$@ $<",
+    ".for.o",
+    "$(COMPILE.for) /obj=$@ $<",
+    ".pas.obj",
+    "$(COMPILE.pas) /obj=$@ $<",
+    ".pas.o",
+    "$(COMPILE.pas) /obj=$@ $<",
+
+    ".y.c",
+    "$(YACC.y) $< \n rename y_tab.c $@",
+    ".l.c",
+    "$(LEX.l) $< \n rename lexyy.c $@",
+
+    ".texinfo.info",
+    "$(MAKEINFO) $<",
+
+    ".tex.dvi",
+    "$(TEX) $<",
+
+    ".cpp.o",
+    "$(COMPILE.cpp) $(OUTPUT_OPTION) $<",
+    ".f.o",
+    "$(COMPILE.f) $(OUTPUT_OPTION) $<",
+    ".m.o",
+    "$(COMPILE.m) $(OUTPUT_OPTION) $<",
+    ".p.o",
+    "$(COMPILE.p) $(OUTPUT_OPTION) $<",
+    ".r.o",
+    "$(COMPILE.r) $(OUTPUT_OPTION) $<",
+    ".mod.o",
+    "$(COMPILE.mod) -o $@ $<",
+
+    ".c.ln",
+    "$(LINT.c) -C$* $<",
+    ".y.ln",
+    "$(YACC.y) $< \n rename y_tab.c $@",
+
+    ".l.ln",
+    "@$(RM) $*.c\n $(LEX.l) $< > $*.c\n$(LINT.c) -i $*.c -o $@\n $(RM) $*.c",
+
+#else /* ! VMS */
+
+    ".o",
+    "$(LINK.o) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".s",
+    "$(LINK.s) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".S",
+    "$(LINK.S) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".c",
+    "$(LINK.c) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".cc",
+    "$(LINK.cc) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".C",
+    "$(LINK.C) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".cpp",
+    "$(LINK.cpp) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".f",
+    "$(LINK.f) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".m",
+    "$(LINK.m) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".p",
+    "$(LINK.p) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".F",
+    "$(LINK.F) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".r",
+    "$(LINK.r) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".mod",
+    "$(COMPILE.mod) -o $@ -e $@ $^",
+
+    ".def.sym",
+    "$(COMPILE.def) -o $@ $<",
+
+    ".sh",
+    "cat $< >$@ \n chmod a+x $@",
+
+    ".s.o",
+    "$(COMPILE.s) -o $@ $<",
+    ".S.o",
+    "$(COMPILE.S) -o $@ $<",
+    ".c.o",
+    "$(COMPILE.c) $(OUTPUT_OPTION) $<",
+    ".cc.o",
+    "$(COMPILE.cc) $(OUTPUT_OPTION) $<",
+    ".C.o",
+    "$(COMPILE.C) $(OUTPUT_OPTION) $<",
+    ".cpp.o",
+    "$(COMPILE.cpp) $(OUTPUT_OPTION) $<",
+    ".f.o",
+    "$(COMPILE.f) $(OUTPUT_OPTION) $<",
+    ".m.o",
+    "$(COMPILE.m) $(OUTPUT_OPTION) $<",
+    ".p.o",
+    "$(COMPILE.p) $(OUTPUT_OPTION) $<",
+    ".F.o",
+    "$(COMPILE.F) $(OUTPUT_OPTION) $<",
+    ".r.o",
+    "$(COMPILE.r) $(OUTPUT_OPTION) $<",
+    ".mod.o",
+    "$(COMPILE.mod) -o $@ $<",
+
+    ".c.ln",
+    "$(LINT.c) -C$* $<",
+    ".y.ln",
+#ifndef __MSDOS__
+    "$(YACC.y) $< \n $(LINT.c) -C$* y.tab.c \n $(RM) y.tab.c",
+#else
+    "$(YACC.y) $< \n $(LINT.c) -C$* y_tab.c \n $(RM) y_tab.c",
+#endif
+    ".l.ln",
+    "@$(RM) $*.c\n $(LEX.l) $< > $*.c\n$(LINT.c) -i $*.c -o $@\n $(RM) $*.c",
+
+    ".y.c",
+#ifndef __MSDOS__
+    "$(YACC.y) $< \n mv -f y.tab.c $@",
+#else
+    "$(YACC.y) $< \n mv -f y_tab.c $@",
+#endif
+    ".l.c",
+    "@$(RM) $@ \n $(LEX.l) $< > $@",
+    ".ym.m",
+    "$(YACC.m) $< \n mv -f y.tab.c $@",
+    ".lm.m",
+    "@$(RM) $@ \n $(LEX.m) $< > $@",
+
+    ".F.f",
+    "$(PREPROCESS.F) $(OUTPUT_OPTION) $<",
+    ".r.f",
+    "$(PREPROCESS.r) $(OUTPUT_OPTION) $<",
+
+    /* This might actually make lex.yy.c if there's no %R% directive in $*.l,
+       but in that case why were you trying to make $*.r anyway?  */
+    ".l.r",
+    "$(LEX.l) $< > $@ \n mv -f lex.yy.r $@",
+
+    ".S.s",
+    "$(PREPROCESS.S) $< > $@",
+
+    ".texinfo.info",
+    "$(MAKEINFO) $(MAKEINFO_FLAGS) $< -o $@",
+
+    ".texi.info",
+    "$(MAKEINFO) $(MAKEINFO_FLAGS) $< -o $@",
+
+    ".txinfo.info",
+    "$(MAKEINFO) $(MAKEINFO_FLAGS) $< -o $@",
+
+    ".tex.dvi",
+    "$(TEX) $<",
+
+    ".texinfo.dvi",
+    "$(TEXI2DVI) $(TEXI2DVI_FLAGS) $<",
+
+    ".texi.dvi",
+    "$(TEXI2DVI) $(TEXI2DVI_FLAGS) $<",
+
+    ".txinfo.dvi",
+    "$(TEXI2DVI) $(TEXI2DVI_FLAGS) $<",
+
+    ".w.c",
+    "$(CTANGLE) $< - $@",       /* The '-' says there is no '.ch' file.  */
+
+    ".web.p",
+    "$(TANGLE) $<",
+
+    ".w.tex",
+    "$(CWEAVE) $< - $@",        /* The '-' says there is no '.ch' file.  */
+
+    ".web.tex",
+    "$(WEAVE) $<",
+
+#endif /* !VMS */
+
+    0, 0,
+  };
+
+static const char *default_variables[] =
+  {
+#ifdef VMS
+#ifdef __ALPHA
+    "ARCH", "ALPHA",
+#endif
+#ifdef __ia64
+    "ARCH", "IA64",
+#endif
+#ifdef __VAX
+    "ARCH", "VAX",
+#endif
+    "AR", "library",
+    "LIBRARY", "library",
+    "ARFLAGS", "/replace",
+    "AS", "macro",
+    "MACRO", "macro",
+#ifdef GCC_IS_NATIVE
+    "CC", "gcc",
+#else
+    "CC", "cc",
+#endif
+    "CD", "builtin_cd",
+    "ECHO", "builtin_echo",
+#ifdef GCC_IS_NATIVE
+    "C++", "gcc/plus",
+    "CXX", "gcc/plus",
+#else
+    "C++", "cxx",
+    "CXX", "cxx",
+#ifndef __ia64
+    "CXXLD", "cxxlink",
+    "CXXLINK", "cxxlink",
+#else
+    /* CXXLINK is not used on VMS/IA64 */
+    "CXXLD", "link",
+    "CXXLINK", "link",
+#endif
+#endif
+    "CO", "co",
+    "CPP", "$(CC) /preprocess_only",
+    "FC", "fortran",
+    /* System V uses these, so explicit rules using them should work.
+       However, there is no way to make implicit rules use them and FC.  */
+    "F77", "$(FC)",
+    "F77FLAGS", "$(FFLAGS)",
+    "LD", "link",
+    "LEX", "lex",
+    "PC", "pascal",
+    "YACC", "bison/yacc",
+    "YFLAGS", "/Define/Verbose",
+    "BISON", "bison",
+    "MAKEINFO", "makeinfo",
+    "TEX", "tex",
+    "TEXINDEX", "texindex",
+
+    "RM", "delete/nolog",
+
+    "CSTARTUP", "",
+#ifdef GCC_IS_NATIVE
+    "CRT0", ",sys$$library:vaxcrtl.olb/lib,gnu_cc_library:crt0.obj",
+    "CXXSTARTUP", "gnu_cc_library:crtbegin.obj",
+    "CXXRT0", ",sys$$library:vaxcrtl.olb/lib,gnu_cc_library:crtend.obj,gnu_cc_library:gxx_main.obj",
+    "LXLIBS", ",gnu_cc_library:libstdcxx.olb/lib,gnu_cc_library:libgccplus.olb/lib",
+    "LDLIBS", ",gnu_cc_library:libgcc.olb/lib",
+#else
+    "CRT0", "",
+    "CXXSTARTUP", "",
+    "CXXRT0", "",
+    "LXLIBS", "",
+    "LDLIBS", "",
+#endif
+
+    "LINK.o", "$(LD) $(LDFLAGS)",
+    "LINK.obj", "$(LD) $(LDFLAGS)",
+#ifndef GCC_IS_NATIVE
+    "CXXLINK.obj", "$(CXXLD) $(LDFLAGS)",
+    "COMPILE.cxx", "$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+#endif
+    "COMPILE.c", "$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+    "LINK.c", "$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+    "COMPILE.m", "$(OBJC) $(OBJCFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.m", "$(OBJC) $(OBJCFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.cc", "$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+    "COMPILE.C", "$(COMPILE.cc)",
+    "COMPILE.cpp", "$(COMPILE.cc)",
+    "LINK.C", "$(LINK.cc)",
+    "LINK.cpp", "$(LINK.cc)",
+    "YACC.y", "$(YACC) $(YFLAGS)",
+    "LEX.l", "$(LEX) $(LFLAGS)",
+    "YACC.m", "$(YACC) $(YFLAGS)",
+    "LEX.m", "$(LEX) $(LFLAGS) -t",
+    "COMPILE.for", "$(FC) $(FFLAGS) $(TARGET_ARCH)",
+    "COMPILE.f", "$(FC) $(FFLAGS) $(TARGET_ARCH) -c",
+    "LINK.f", "$(FC) $(FFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.r", "$(FC) $(FFLAGS) $(RFLAGS) $(TARGET_ARCH) -c",
+    "LINK.r", "$(FC) $(FFLAGS) $(RFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.pas", "$(PC) $(PFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+    "COMPILE.def", "$(M2C) $(M2FLAGS) $(DEFFLAGS) $(TARGET_ARCH)",
+    "COMPILE.mod", "$(M2C) $(M2FLAGS) $(MODFLAGS) $(TARGET_ARCH)",
+    "COMPILE.p", "$(PC) $(PFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.p", "$(PC) $(PFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.mar", "$(MACRO) $(MACROFLAGS)",
+    "COMPILE.s", "$(AS) $(ASFLAGS) $(TARGET_MACH)",
+    "LINK.S", "$(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_MACH)",
+    "COMPILE.S", "$(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_MACH) -c",
+    "PREPROCESS.S", "$(CC) -E $(CPPFLAGS)",
+    "PREPROCESS.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -F",
+    "PREPROCESS.r", "$(FC) $(FFLAGS) $(RFLAGS) $(TARGET_ARCH) -F",
+    "LINT.c", "$(LINT) $(LINTFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+
+    "MV", "rename/new_version",
+    "CP", "copy",
+    ".LIBPATTERNS", "%.olb lib%.a",
+
+#else /* !VMS */
+
+    "AR", "ar",
+    "ARFLAGS", "rv",
+    "AS", "as",
+#ifdef GCC_IS_NATIVE
+    "CC", "gcc",
+# ifdef __MSDOS__
+    "CXX", "gpp",       /* g++ is an invalid name on MSDOS */
+# else
+    "CXX", "gcc",
+# endif /* __MSDOS__ */
+    "OBJC", "gcc",
+#else
+    "CC", "cc",
+    "CXX", "g++",
+    "OBJC", "cc",
+#endif
+
+    /* This expands to $(CO) $(COFLAGS) $< $@ if $@ does not exist,
+       and to the empty string if $@ does exist.  */
+    "CHECKOUT,v", "+$(if $(wildcard $@),,$(CO) $(COFLAGS) $< $@)",
+    "CO", "co",
+    "COFLAGS", "",
+
+    "CPP", "$(CC) -E",
+#ifdef  CRAY
+    "CF77PPFLAGS", "-P",
+    "CF77PP", "/lib/cpp",
+    "CFT", "cft77",
+    "CF", "cf77",
+    "FC", "$(CF)",
+#else   /* Not CRAY.  */
+#ifdef  _IBMR2
+    "FC", "xlf",
+#else
+#ifdef  __convex__
+    "FC", "fc",
+#else
+    "FC", "f77",
+#endif /* __convex__ */
+#endif /* _IBMR2 */
+    /* System V uses these, so explicit rules using them should work.
+       However, there is no way to make implicit rules use them and FC.  */
+    "F77", "$(FC)",
+    "F77FLAGS", "$(FFLAGS)",
+#endif  /* Cray.  */
+    "GET", SCCS_GET,
+    "LD", "ld",
+#ifdef GCC_IS_NATIVE
+    "LEX", "flex",
+#else
+    "LEX", "lex",
+#endif
+    "LINT", "lint",
+    "M2C", "m2c",
+#ifdef  pyr
+    "PC", "pascal",
+#else
+#ifdef  CRAY
+    "PC", "PASCAL",
+    "SEGLDR", "segldr",
+#else
+    "PC", "pc",
+#endif  /* CRAY.  */
+#endif  /* pyr.  */
+#ifdef GCC_IS_NATIVE
+    "YACC", "bison -y",
+#else
+    "YACC", "yacc",     /* Or "bison -y"  */
+#endif
+    "MAKEINFO", "makeinfo",
+    "TEX", "tex",
+    "TEXI2DVI", "texi2dvi",
+    "WEAVE", "weave",
+    "CWEAVE", "cweave",
+    "TANGLE", "tangle",
+    "CTANGLE", "ctangle",
+
+    "RM", "rm -f",
+
+    "LINK.o", "$(CC) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.c", "$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.c", "$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.m", "$(OBJC) $(OBJCFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.m", "$(OBJC) $(OBJCFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.cc", "$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+#ifndef HAVE_CASE_INSENSITIVE_FS
+    /* On case-insensitive filesystems, treat *.C files as *.c files,
+       to avoid erroneously compiling C sources as C++, which will
+       probably fail.  */
+    "COMPILE.C", "$(COMPILE.cc)",
+#else
+    "COMPILE.C", "$(COMPILE.c)",
+#endif
+    "COMPILE.cpp", "$(COMPILE.cc)",
+    "LINK.cc", "$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+#ifndef HAVE_CASE_INSENSITIVE_FS
+    "LINK.C", "$(LINK.cc)",
+#else
+    "LINK.C", "$(LINK.c)",
+#endif
+    "LINK.cpp", "$(LINK.cc)",
+    "YACC.y", "$(YACC) $(YFLAGS)",
+    "LEX.l", "$(LEX) $(LFLAGS) -t",
+    "YACC.m", "$(YACC) $(YFLAGS)",
+    "LEX.m", "$(LEX) $(LFLAGS) -t",
+    "COMPILE.f", "$(FC) $(FFLAGS) $(TARGET_ARCH) -c",
+    "LINK.f", "$(FC) $(FFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.r", "$(FC) $(FFLAGS) $(RFLAGS) $(TARGET_ARCH) -c",
+    "LINK.r", "$(FC) $(FFLAGS) $(RFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.def", "$(M2C) $(M2FLAGS) $(DEFFLAGS) $(TARGET_ARCH)",
+    "COMPILE.mod", "$(M2C) $(M2FLAGS) $(MODFLAGS) $(TARGET_ARCH)",
+    "COMPILE.p", "$(PC) $(PFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.p", "$(PC) $(PFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "LINK.s", "$(CC) $(ASFLAGS) $(LDFLAGS) $(TARGET_MACH)",
+    "COMPILE.s", "$(AS) $(ASFLAGS) $(TARGET_MACH)",
+    "LINK.S", "$(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_MACH)",
+    "COMPILE.S", "$(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_MACH) -c",
+    "PREPROCESS.S", "$(CC) -E $(CPPFLAGS)",
+    "PREPROCESS.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -F",
+    "PREPROCESS.r", "$(FC) $(FFLAGS) $(RFLAGS) $(TARGET_ARCH) -F",
+    "LINT.c", "$(LINT) $(LINTFLAGS) $(CPPFLAGS) $(TARGET_ARCH)",
+
+#ifndef NO_MINUS_C_MINUS_O
+    "OUTPUT_OPTION", "-o $@",
+#endif
+
+#ifdef  SCCS_GET_MINUS_G
+    "SCCS_OUTPUT_OPTION", "-G$@",
+#endif
+
+#if defined(_AMIGA)
+    ".LIBPATTERNS", "%.lib",
+#elif defined(__MSDOS__)
+    ".LIBPATTERNS", "lib%.a $(DJDIR)/lib/lib%.a",
+#elif defined(__APPLE__)
+    ".LIBPATTERNS", "lib%.dylib lib%.a",
+#elif defined(__CYGWIN__) || defined(WINDOWS32)
+    ".LIBPATTERNS", "lib%.dll.a %.dll.a lib%.a %.lib lib%.dll %.dll",
+#else
+    ".LIBPATTERNS", "lib%.so lib%.a",
+#endif
+
+#endif /* !VMS */
+    /* Make this assignment to avoid undefined variable warnings.  */
+    "GNUMAKEFLAGS", "",
+    0, 0
+  };
+
+/* Set up the default .SUFFIXES list.  */
+
+void
+set_default_suffixes (void)
+{
+  suffix_file = enter_file (strcache_add (".SUFFIXES"));
+  suffix_file->builtin = 1;
+
+  if (no_builtin_rules_flag)
+    define_variable_cname ("SUFFIXES", "", o_default, 0);
+  else
+    {
+      struct dep *d;
+      const char *p = default_suffixes;
+      suffix_file->deps = enter_prereqs (PARSE_SIMPLE_SEQ ((char **)&p, struct dep),
+                                         NULL);
+      for (d = suffix_file->deps; d; d = d->next)
+        d->file->builtin = 1;
+
+      define_variable_cname ("SUFFIXES", default_suffixes, o_default, 0);
+    }
+}
+
+/* Enter the default suffix rules as file rules.  This used to be done in
+   install_default_implicit_rules, but that loses because we want the
+   suffix rules installed before reading makefiles, and the pattern rules
+   installed after.  */
+
+void
+install_default_suffix_rules (void)
+{
+  const char **s;
+
+  if (no_builtin_rules_flag)
+    return;
+
+  for (s = default_suffix_rules; *s != 0; s += 2)
+    {
+      struct file *f = enter_file (strcache_add (s[0]));
+      /* This function should run before any makefile is parsed.  */
+      assert (f->cmds == 0);
+      f->cmds = xmalloc (sizeof (struct commands));
+      f->cmds->fileinfo.filenm = 0;
+      f->cmds->commands = xstrdup (s[1]);
+      f->cmds->command_lines = 0;
+      f->cmds->recipe_prefix = RECIPEPREFIX_DEFAULT;
+      f->builtin = 1;
+    }
+}
+
+
+/* Install the default pattern rules.  */
+
+void
+install_default_implicit_rules (void)
+{
+  struct pspec *p;
+
+  if (no_builtin_rules_flag)
+    return;
+
+  for (p = default_pattern_rules; p->target != 0; ++p)
+    install_pattern_rule (p, 0);
+
+  for (p = default_terminal_rules; p->target != 0; ++p)
+    install_pattern_rule (p, 1);
+}
+
+void
+define_default_variables (void)
+{
+  const char **s;
+
+  if (no_builtin_variables_flag)
+    return;
+
+  for (s = default_variables; *s != 0; s += 2)
+    define_variable (s[0], strlen (s[0]), s[1], o_default, 1);
+}
+
+void
+undefine_default_variables (void)
+{
+  const char **s;
+
+  for (s = default_variables; *s != 0; s += 2)
+    undefine_variable_global (s[0], strlen (s[0]), o_default);
+}

src/dep.h

@@ -0,0 +1,131 @@
+/* Definitions of dependency data structures for GNU Make.
+Copyright (C) 1988-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+
+/* Structure used in chains of names, for parsing and globbing.  */
+
+#define NAMESEQ(_t)     \
+    _t *next;           \
+    const char *name
+
+struct nameseq
+  {
+    NAMESEQ (struct nameseq);
+  };
+
+/* Flag bits for the second argument to 'read_makefile'.
+   These flags are saved in the 'flags' field of each
+   'struct goaldep' in the chain returned by 'read_all_makefiles'.  */
+
+#define RM_NO_DEFAULT_GOAL      (1 << 0) /* Do not set default goal.  */
+#define RM_INCLUDED             (1 << 1) /* Search makefile search path.  */
+#define RM_DONTCARE             (1 << 2) /* No error if it doesn't exist.  */
+#define RM_NO_TILDE             (1 << 3) /* Don't expand ~ in file name.  */
+#define RM_NOFLAG               0
+
+/* Structure representing one dependency of a file.
+   Each struct file's 'deps' points to a chain of these, through 'next'.
+   'stem' is the stem for this dep line of static pattern rule or NULL.  */
+
+#define DEP(_t)                                 \
+    NAMESEQ (_t);                               \
+    struct file *file;                          \
+    const char *stem;                           \
+    unsigned short flags : 8;                   \
+    unsigned short changed : 1;                 \
+    unsigned short ignore_mtime : 1;            \
+    unsigned short staticpattern : 1;           \
+    unsigned short need_2nd_expansion : 1
+
+struct dep
+  {
+    DEP (struct dep);
+  };
+
+/* Structure representing one goal.
+   The goals to be built constitute a chain of these, chained through 'next'.
+   'stem' is not used, but it's simpler to include and ignore it.  */
+
+struct goaldep
+  {
+    DEP (struct goaldep);
+    int error;
+    floc floc;
+  };
+
+/* Options for parsing lists of filenames.  */
+
+#define PARSEFS_NONE    0x0000
+#define PARSEFS_NOSTRIP 0x0001
+#define PARSEFS_NOAR    0x0002
+#define PARSEFS_NOGLOB  0x0004
+#define PARSEFS_EXISTS  0x0008
+#define PARSEFS_NOCACHE 0x0010
+
+#define PARSE_FILE_SEQ(_s,_t,_c,_p,_f) \
+            (_t *)parse_file_seq ((_s),sizeof (_t),(_c),(_p),(_f))
+#define PARSE_SIMPLE_SEQ(_s,_t) \
+            (_t *)parse_file_seq ((_s),sizeof (_t),MAP_NUL,NULL,PARSEFS_NONE)
+
+#ifdef VMS
+void *parse_file_seq ();
+#else
+void *parse_file_seq (char **stringp, size_t size,
+                      int stopmap, const char *prefix, int flags);
+#endif
+
+char *tilde_expand (const char *name);
+
+#ifndef NO_ARCHIVES
+struct nameseq *ar_glob (const char *arname, const char *member_pattern, size_t size);
+#endif
+
+#define dep_name(d)        ((d)->name ? (d)->name : (d)->file->name)
+
+#define alloc_seq_elt(_t)   xcalloc (sizeof (_t))
+void free_ns_chain (struct nameseq *n);
+
+#if defined(MAKE_MAINTAINER_MODE) && defined(__GNUC__)
+/* Use inline to get real type-checking.  */
+#define SI static inline
+SI struct nameseq *alloc_ns()      { return alloc_seq_elt (struct nameseq); }
+SI struct dep *alloc_dep()         { return alloc_seq_elt (struct dep); }
+SI struct goaldep *alloc_goaldep() { return alloc_seq_elt (struct goaldep); }
+
+SI void free_ns(struct nameseq *n)      { free (n); }
+SI void free_dep(struct dep *d)         { free_ns ((struct nameseq *)d); }
+SI void free_goaldep(struct goaldep *g) { free_dep ((struct dep *)g); }
+
+SI void free_dep_chain(struct dep *d)      { free_ns_chain((struct nameseq *)d); }
+SI void free_goal_chain(struct goaldep *g) { free_dep_chain((struct dep *)g); }
+#else
+# define alloc_ns()          alloc_seq_elt (struct nameseq)
+# define alloc_dep()         alloc_seq_elt (struct dep)
+# define alloc_goaldep()     alloc_seq_elt (struct goaldep)
+
+# define free_ns(_n)         free (_n)
+# define free_dep(_d)        free_ns (_d)
+# define free_goaldep(_g)    free_dep (_g)
+
+# define free_dep_chain(_d)  free_ns_chain ((struct nameseq *)(_d))
+# define free_goal_chain(_g) free_ns_chain ((struct nameseq *)(_g))
+#endif
+
+struct dep *copy_dep_chain (const struct dep *d);
+
+struct goaldep *read_all_makefiles (const char **makefiles);
+void eval_buffer (char *buffer, const floc *floc);
+enum update_status update_goal_chain (struct goaldep *goals);

src/expand.c

@@ -0,0 +1,597 @@
+/* Variable expansion functions for GNU Make.
+Copyright (C) 1988-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include <assert.h>
+
+#include "filedef.h"
+#include "job.h"
+#include "commands.h"
+#include "variable.h"
+#include "rule.h"
+
+/* Initially, any errors reported when expanding strings will be reported
+   against the file where the error appears.  */
+const floc **expanding_var = &reading_file;
+
+/* The next two describe the variable output buffer.
+   This buffer is used to hold the variable-expansion of a line of the
+   makefile.  It is made bigger with realloc whenever it is too small.
+   variable_buffer_length is the size currently allocated.
+   variable_buffer is the address of the buffer.
+
+   For efficiency, it's guaranteed that the buffer will always have
+   VARIABLE_BUFFER_ZONE extra bytes allocated.  This allows you to add a few
+   extra chars without having to call a function.  Note you should never use
+   these bytes unless you're _sure_ you have room (you know when the buffer
+   length was last checked.  */
+
+#define VARIABLE_BUFFER_ZONE    5
+
+static size_t variable_buffer_length;
+char *variable_buffer;
+
+/* Subroutine of variable_expand and friends:
+   The text to add is LENGTH chars starting at STRING to the variable_buffer.
+   The text is added to the buffer at PTR, and the updated pointer into
+   the buffer is returned as the value.  Thus, the value returned by
+   each call to variable_buffer_output should be the first argument to
+   the following call.  */
+
+char *
+variable_buffer_output (char *ptr, const char *string, size_t length)
+{
+  size_t newlen = length + (ptr - variable_buffer);
+
+  if ((newlen + VARIABLE_BUFFER_ZONE) > variable_buffer_length)
+    {
+      size_t offset = ptr - variable_buffer;
+      variable_buffer_length = (newlen + 100 > 2 * variable_buffer_length
+                                ? newlen + 100
+                                : 2 * variable_buffer_length);
+      variable_buffer = xrealloc (variable_buffer, variable_buffer_length);
+      ptr = variable_buffer + offset;
+    }
+
+  memcpy (ptr, string, length);
+  return ptr + length;
+}
+
+/* Return a pointer to the beginning of the variable buffer.  */
+
+static char *
+initialize_variable_output (void)
+{
+  /* If we don't have a variable output buffer yet, get one.  */
+
+  if (variable_buffer == 0)
+    {
+      variable_buffer_length = 200;
+      variable_buffer = xmalloc (variable_buffer_length);
+      variable_buffer[0] = '\0';
+    }
+
+  return variable_buffer;
+}
+
+/* Recursively expand V.  The returned string is malloc'd.  */
+
+static char *allocated_variable_append (const struct variable *v);
+
+char *
+recursively_expand_for_file (struct variable *v, struct file *file)
+{
+  char *value;
+  const floc *this_var;
+  const floc **saved_varp;
+  struct variable_set_list *save = 0;
+  int set_reading = 0;
+
+  /* Don't install a new location if this location is empty.
+     This can happen for command-line variables, builtin variables, etc.  */
+  saved_varp = expanding_var;
+  if (v->fileinfo.filenm)
+    {
+      this_var = &v->fileinfo;
+      expanding_var = &this_var;
+    }
+
+  /* If we have no other file-reading context, use the variable's context. */
+  if (!reading_file)
+    {
+      set_reading = 1;
+      reading_file = &v->fileinfo;
+    }
+
+  if (v->expanding)
+    {
+      if (!v->exp_count)
+        /* Expanding V causes infinite recursion.  Lose.  */
+        OS (fatal, *expanding_var,
+            _("Recursive variable '%s' references itself (eventually)"),
+            v->name);
+      --v->exp_count;
+    }
+
+  if (file)
+    {
+      save = current_variable_set_list;
+      current_variable_set_list = file->variables;
+    }
+
+  v->expanding = 1;
+  if (v->append)
+    value = allocated_variable_append (v);
+  else
+    value = allocated_variable_expand (v->value);
+  v->expanding = 0;
+
+  if (set_reading)
+    reading_file = 0;
+
+  if (file)
+    current_variable_set_list = save;
+
+  expanding_var = saved_varp;
+
+  return value;
+}
+
+/* Expand a simple reference to variable NAME, which is LENGTH chars long.  */
+
+#ifdef __GNUC__
+__inline
+#endif
+static char *
+reference_variable (char *o, const char *name, size_t length)
+{
+  struct variable *v;
+  char *value;
+
+  v = lookup_variable (name, length);
+
+  if (v == 0)
+    warn_undefined (name, length);
+
+  /* If there's no variable by that name or it has no value, stop now.  */
+  if (v == 0 || (*v->value == '\0' && !v->append))
+    return o;
+
+  value = (v->recursive ? recursively_expand (v) : v->value);
+
+  o = variable_buffer_output (o, value, strlen (value));
+
+  if (v->recursive)
+    free (value);
+
+  return o;
+}
+
+/* Scan STRING for variable references and expansion-function calls.  Only
+   LENGTH bytes of STRING are actually scanned.  If LENGTH is -1, scan until
+   a null byte is found.
+
+   Write the results to LINE, which must point into 'variable_buffer'.  If
+   LINE is NULL, start at the beginning of the buffer.
+   Return a pointer to LINE, or to the beginning of the buffer if LINE is
+   NULL.
+ */
+char *
+variable_expand_string (char *line, const char *string, size_t length)
+{
+  struct variable *v;
+  const char *p, *p1;
+  char *save;
+  char *o;
+  size_t line_offset;
+
+  if (!line)
+    line = initialize_variable_output ();
+  o = line;
+  line_offset = line - variable_buffer;
+
+  if (length == 0)
+    {
+      variable_buffer_output (o, "", 1);
+      return (variable_buffer);
+    }
+
+  /* We need a copy of STRING: due to eval, it's possible that it will get
+     freed as we process it (it might be the value of a variable that's reset
+     for example).  Also having a nil-terminated string is handy.  */
+  save = length == SIZE_MAX ? xstrdup (string) : xstrndup (string, length);
+  p = save;
+
+  while (1)
+    {
+      /* Copy all following uninteresting chars all at once to the
+         variable output buffer, and skip them.  Uninteresting chars end
+         at the next $ or the end of the input.  */
+
+      p1 = strchr (p, '$');
+
+      o = variable_buffer_output (o, p, p1 != 0 ? (size_t) (p1 - p) : strlen (p) + 1);
+
+      if (p1 == 0)
+        break;
+      p = p1 + 1;
+
+      /* Dispatch on the char that follows the $.  */
+
+      switch (*p)
+        {
+        case '$':
+        case '\0':
+          /* $$ or $ at the end of the string means output one $ to the
+             variable output buffer.  */
+          o = variable_buffer_output (o, p1, 1);
+          break;
+
+        case '(':
+        case '{':
+          /* $(...) or ${...} is the general case of substitution.  */
+          {
+            char openparen = *p;
+            char closeparen = (openparen == '(') ? ')' : '}';
+            const char *begp;
+            const char *beg = p + 1;
+            char *op;
+            char *abeg = NULL;
+            const char *end, *colon;
+
+            op = o;
+            begp = p;
+            if (handle_function (&op, &begp))
+              {
+                o = op;
+                p = begp;
+                break;
+              }
+
+            /* Is there a variable reference inside the parens or braces?
+               If so, expand it before expanding the entire reference.  */
+
+            end = strchr (beg, closeparen);
+            if (end == 0)
+              /* Unterminated variable reference.  */
+              O (fatal, *expanding_var, _("unterminated variable reference"));
+            p1 = lindex (beg, end, '$');
+            if (p1 != 0)
+              {
+                /* BEG now points past the opening paren or brace.
+                   Count parens or braces until it is matched.  */
+                int count = 0;
+                for (p = beg; *p != '\0'; ++p)
+                  {
+                    if (*p == openparen)
+                      ++count;
+                    else if (*p == closeparen && --count < 0)
+                      break;
+                  }
+                /* If COUNT is >= 0, there were unmatched opening parens
+                   or braces, so we go to the simple case of a variable name
+                   such as '$($(a)'.  */
+                if (count < 0)
+                  {
+                    abeg = expand_argument (beg, p); /* Expand the name.  */
+                    beg = abeg;
+                    end = strchr (beg, '\0');
+                  }
+              }
+            else
+              /* Advance P to the end of this reference.  After we are
+                 finished expanding this one, P will be incremented to
+                 continue the scan.  */
+              p = end;
+
+            /* This is not a reference to a built-in function and
+               any variable references inside are now expanded.
+               Is the resultant text a substitution reference?  */
+
+            colon = lindex (beg, end, ':');
+            if (colon)
+              {
+                /* This looks like a substitution reference: $(FOO:A=B).  */
+                const char *subst_beg = colon + 1;
+                const char *subst_end = lindex (subst_beg, end, '=');
+                if (subst_end == 0)
+                  /* There is no = in sight.  Punt on the substitution
+                     reference and treat this as a variable name containing
+                     a colon, in the code below.  */
+                  colon = 0;
+                else
+                  {
+                    const char *replace_beg = subst_end + 1;
+                    const char *replace_end = end;
+
+                    /* Extract the variable name before the colon
+                       and look up that variable.  */
+                    v = lookup_variable (beg, colon - beg);
+                    if (v == 0)
+                      warn_undefined (beg, colon - beg);
+
+                    /* If the variable is not empty, perform the
+                       substitution.  */
+                    if (v != 0 && *v->value != '\0')
+                      {
+                        char *pattern, *replace, *ppercent, *rpercent;
+                        char *value = (v->recursive
+                                       ? recursively_expand (v)
+                                       : v->value);
+
+                        /* Copy the pattern and the replacement.  Add in an
+                           extra % at the beginning to use in case there
+                           isn't one in the pattern.  */
+                        pattern = alloca (subst_end - subst_beg + 2);
+                        *(pattern++) = '%';
+                        memcpy (pattern, subst_beg, subst_end - subst_beg);
+                        pattern[subst_end - subst_beg] = '\0';
+
+                        replace = alloca (replace_end - replace_beg + 2);
+                        *(replace++) = '%';
+                        memcpy (replace, replace_beg,
+                               replace_end - replace_beg);
+                        replace[replace_end - replace_beg] = '\0';
+
+                        /* Look for %.  Set the percent pointers properly
+                           based on whether we find one or not.  */
+                        ppercent = find_percent (pattern);
+                        if (ppercent)
+                          {
+                            ++ppercent;
+                            rpercent = find_percent (replace);
+                            if (rpercent)
+                              ++rpercent;
+                          }
+                        else
+                          {
+                            ppercent = pattern;
+                            rpercent = replace;
+                            --pattern;
+                            --replace;
+                          }
+
+                        o = patsubst_expand_pat (o, value, pattern, replace,
+                                                 ppercent, rpercent);
+
+                        if (v->recursive)
+                          free (value);
+                      }
+                  }
+              }
+
+            if (colon == 0)
+              /* This is an ordinary variable reference.
+                 Look up the value of the variable.  */
+                o = reference_variable (o, beg, end - beg);
+
+            free (abeg);
+          }
+          break;
+
+        default:
+          if (ISSPACE (p[-1]))
+            break;
+
+          /* A $ followed by a random char is a variable reference:
+             $a is equivalent to $(a).  */
+          o = reference_variable (o, p, 1);
+
+          break;
+        }
+
+      if (*p == '\0')
+        break;
+
+      ++p;
+    }
+
+  free (save);
+
+  variable_buffer_output (o, "", 1);
+  return (variable_buffer + line_offset);
+}
+
+/* Scan LINE for variable references and expansion-function calls.
+   Build in 'variable_buffer' the result of expanding the references and calls.
+   Return the address of the resulting string, which is null-terminated
+   and is valid only until the next time this function is called.  */
+
+char *
+variable_expand (const char *line)
+{
+  return variable_expand_string (NULL, line, SIZE_MAX);
+}
+
+/* Expand an argument for an expansion function.
+   The text starting at STR and ending at END is variable-expanded
+   into a null-terminated string that is returned as the value.
+   This is done without clobbering 'variable_buffer' or the current
+   variable-expansion that is in progress.  */
+
+char *
+expand_argument (const char *str, const char *end)
+{
+  char *tmp, *alloc = NULL;
+  char *r;
+
+  if (str == end)
+    return xstrdup ("");
+
+  if (!end || *end == '\0')
+    return allocated_variable_expand (str);
+
+  if (end - str + 1 > 1000)
+    tmp = alloc = xmalloc (end - str + 1);
+  else
+    tmp = alloca (end - str + 1);
+
+  memcpy (tmp, str, end - str);
+  tmp[end - str] = '\0';
+
+  r = allocated_variable_expand (tmp);
+
+  free (alloc);
+
+  return r;
+}
+
+/* Expand LINE for FILE.  Error messages refer to the file and line where
+   FILE's commands were found.  Expansion uses FILE's variable set list.  */
+
+char *
+variable_expand_for_file (const char *line, struct file *file)
+{
+  char *result;
+  struct variable_set_list *savev;
+  const floc *savef;
+
+  if (file == 0)
+    return variable_expand (line);
+
+  savev = current_variable_set_list;
+  current_variable_set_list = file->variables;
+
+  savef = reading_file;
+  if (file->cmds && file->cmds->fileinfo.filenm)
+    reading_file = &file->cmds->fileinfo;
+  else
+    reading_file = 0;
+
+  result = variable_expand (line);
+
+  current_variable_set_list = savev;
+  reading_file = savef;
+
+  return result;
+}
+
+/* Like allocated_variable_expand, but for += target-specific variables.
+   First recursively construct the variable value from its appended parts in
+   any upper variable sets.  Then expand the resulting value.  */
+
+static char *
+variable_append (const char *name, size_t length,
+                 const struct variable_set_list *set, int local)
+{
+  const struct variable *v;
+  char *buf = 0;
+  int nextlocal;
+
+  /* If there's nothing left to check, return the empty buffer.  */
+  if (!set)
+    return initialize_variable_output ();
+
+  /* If this set is local and the next is not a parent, then next is local.  */
+  nextlocal = local && set->next_is_parent == 0;
+
+  /* Try to find the variable in this variable set.  */
+  v = lookup_variable_in_set (name, length, set->set);
+
+  /* If there isn't one, or this one is private, try the set above us.  */
+  if (!v || (!local && v->private_var))
+    return variable_append (name, length, set->next, nextlocal);
+
+  /* If this variable type is append, first get any upper values.
+     If not, initialize the buffer.  */
+  if (v->append)
+    buf = variable_append (name, length, set->next, nextlocal);
+  else
+    buf = initialize_variable_output ();
+
+  /* Append this value to the buffer, and return it.
+     If we already have a value, first add a space.  */
+  if (buf > variable_buffer)
+    buf = variable_buffer_output (buf, " ", 1);
+
+  /* Either expand it or copy it, depending.  */
+  if (! v->recursive)
+    return variable_buffer_output (buf, v->value, strlen (v->value));
+
+  buf = variable_expand_string (buf, v->value, strlen (v->value));
+  return (buf + strlen (buf));
+}
+
+
+static char *
+allocated_variable_append (const struct variable *v)
+{
+  char *val;
+
+  /* Construct the appended variable value.  */
+
+  char *obuf = variable_buffer;
+  size_t olen = variable_buffer_length;
+
+  variable_buffer = 0;
+
+  val = variable_append (v->name, strlen (v->name),
+                         current_variable_set_list, 1);
+  variable_buffer_output (val, "", 1);
+  val = variable_buffer;
+
+  variable_buffer = obuf;
+  variable_buffer_length = olen;
+
+  return val;
+}
+
+/* Like variable_expand_for_file, but the returned string is malloc'd.
+   This function is called a lot.  It wants to be efficient.  */
+
+char *
+allocated_variable_expand_for_file (const char *line, struct file *file)
+{
+  char *value;
+
+  char *obuf = variable_buffer;
+  size_t olen = variable_buffer_length;
+
+  variable_buffer = 0;
+
+  value = variable_expand_for_file (line, file);
+
+  variable_buffer = obuf;
+  variable_buffer_length = olen;
+
+  return value;
+}
+
+/* Install a new variable_buffer context, returning the current one for
+   safe-keeping.  */
+
+void
+install_variable_buffer (char **bufp, size_t *lenp)
+{
+  *bufp = variable_buffer;
+  *lenp = variable_buffer_length;
+
+  variable_buffer = 0;
+  initialize_variable_output ();
+}
+
+/* Restore a previously-saved variable_buffer setting (free the current one).
+ */
+
+void
+restore_variable_buffer (char *buf, size_t len)
+{
+  free (variable_buffer);
+
+  variable_buffer = buf;
+  variable_buffer_length = len;
+}

src/filedef.h

@@ -0,0 +1,212 @@
+/* Definition of target file data structures for GNU Make.
+Copyright (C) 1988-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+
+/* Structure that represents the info on one file
+   that the makefile says how to make.
+   All of these are chained together through 'next'.  */
+
+#include "hash.h"
+
+struct file
+  {
+    const char *name;
+    const char *hname;          /* Hashed filename */
+    const char *vpath;          /* VPATH/vpath pathname */
+    struct dep *deps;           /* all dependencies, including duplicates */
+    struct commands *cmds;      /* Commands to execute for this target.  */
+    const char *stem;           /* Implicit stem, if an implicit
+                                   rule has been used */
+    struct dep *also_make;      /* Targets that are made by making this.  */
+    struct file *prev;          /* Previous entry for same file name;
+                                   used when there are multiple double-colon
+                                   entries for the same file.  */
+    struct file *last;          /* Last entry for the same file name.  */
+
+    /* File that this file was renamed to.  After any time that a
+       file could be renamed, call 'check_renamed' (below).  */
+    struct file *renamed;
+
+    /* List of variable sets used for this file.  */
+    struct variable_set_list *variables;
+
+    /* Pattern-specific variable reference for this target, or null if there
+       isn't one.  Also see the pat_searched flag, below.  */
+    struct variable_set_list *pat_variables;
+
+    /* Immediate dependent that caused this target to be remade,
+       or nil if there isn't one.  */
+    struct file *parent;
+
+    /* For a double-colon entry, this is the first double-colon entry for
+       the same file.  Otherwise this is null.  */
+    struct file *double_colon;
+
+    FILE_TIMESTAMP last_mtime;  /* File's modtime, if already known.  */
+    FILE_TIMESTAMP mtime_before_update; /* File's modtime before any updating
+                                           has been performed.  */
+    unsigned int considered;    /* equal to 'considered' if file has been
+                                   considered on current scan of goal chain */
+    int command_flags;          /* Flags OR'd in for cmds; see commands.h.  */
+    enum update_status          /* Status of the last attempt to update.  */
+      {
+        us_success = 0,         /* Successfully updated.  Must be 0!  */
+        us_none,                /* No attempt to update has been made.  */
+        us_question,            /* Needs to be updated (-q is is set).  */
+        us_failed               /* Update failed.  */
+      } update_status ENUM_BITFIELD (2);
+    enum cmd_state              /* State of commands.  ORDER IS IMPORTANT!  */
+      {
+        cs_not_started = 0,     /* Not yet started.  Must be 0!  */
+        cs_deps_running,        /* Dep commands running.  */
+        cs_running,             /* Commands running.  */
+        cs_finished             /* Commands finished.  */
+      } command_state ENUM_BITFIELD (2);
+
+    unsigned int builtin:1;     /* True if the file is a builtin rule. */
+    unsigned int precious:1;    /* Non-0 means don't delete file on quit */
+    unsigned int loaded:1;      /* True if the file is a loaded object. */
+    unsigned int low_resolution_time:1; /* Nonzero if this file's time stamp
+                                           has only one-second resolution.  */
+    unsigned int tried_implicit:1; /* Nonzero if have searched
+                                      for implicit rule for making
+                                      this file; don't search again.  */
+    unsigned int updating:1;    /* Nonzero while updating deps of this file */
+    unsigned int updated:1;     /* Nonzero if this file has been remade.  */
+    unsigned int is_target:1;   /* Nonzero if file is described as target.  */
+    unsigned int cmd_target:1;  /* Nonzero if file was given on cmd line.  */
+    unsigned int phony:1;       /* Nonzero if this is a phony file
+                                   i.e., a prerequisite of .PHONY.  */
+    unsigned int intermediate:1;/* Nonzero if this is an intermediate file.  */
+    unsigned int secondary:1;   /* Nonzero means remove_intermediates should
+                                   not delete it.  */
+    unsigned int dontcare:1;    /* Nonzero if no complaint is to be made if
+                                   this target cannot be remade.  */
+    unsigned int ignore_vpath:1;/* Nonzero if we threw out VPATH name.  */
+    unsigned int pat_searched:1;/* Nonzero if we already searched for
+                                   pattern-specific variables.  */
+    unsigned int no_diag:1;     /* True if the file failed to update and no
+                                   diagnostics has been issued (dontcare). */
+  };
+
+
+extern struct file *default_file;
+
+
+struct file *lookup_file (const char *name);
+struct file *enter_file (const char *name);
+struct dep *split_prereqs (char *prereqstr);
+struct dep *enter_prereqs (struct dep *prereqs, const char *stem);
+void remove_intermediates (int sig);
+void snap_deps (void);
+void rename_file (struct file *file, const char *name);
+void rehash_file (struct file *file, const char *name);
+void set_command_state (struct file *file, enum cmd_state state);
+void notice_finished_file (struct file *file);
+void init_hash_files (void);
+void verify_file_data_base (void);
+char *build_target_list (char *old_list);
+void print_prereqs (const struct dep *deps);
+void print_file_data_base (void);
+int try_implicit_rule (struct file *file, unsigned int depth);
+int stemlen_compare (const void *v1, const void *v2);
+
+#if FILE_TIMESTAMP_HI_RES
+# define FILE_TIMESTAMP_STAT_MODTIME(fname, st) \
+    file_timestamp_cons (fname, (st).st_mtime, (st).ST_MTIM_NSEC)
+#else
+# define FILE_TIMESTAMP_STAT_MODTIME(fname, st) \
+    file_timestamp_cons (fname, (st).st_mtime, 0)
+#endif
+
+/* If FILE_TIMESTAMP is 64 bits (or more), use nanosecond resolution.
+   (Multiply by 2**30 instead of by 10**9 to save time at the cost of
+   slightly decreasing the number of available timestamps.)  With
+   64-bit FILE_TIMESTAMP, this stops working on 2514-05-30 01:53:04
+   UTC, but by then uintmax_t should be larger than 64 bits.  */
+#define FILE_TIMESTAMPS_PER_S (FILE_TIMESTAMP_HI_RES ? 1000000000 : 1)
+#define FILE_TIMESTAMP_LO_BITS (FILE_TIMESTAMP_HI_RES ? 30 : 0)
+
+#define FILE_TIMESTAMP_S(ts) (((ts) - ORDINARY_MTIME_MIN) \
+                              >> FILE_TIMESTAMP_LO_BITS)
+#define FILE_TIMESTAMP_NS(ts) ((int) (((ts) - ORDINARY_MTIME_MIN) \
+                                      & ((1 << FILE_TIMESTAMP_LO_BITS) - 1)))
+
+/* Upper bound on length of string "YYYY-MM-DD HH:MM:SS.NNNNNNNNN"
+   representing a file timestamp.  The upper bound is not necessarily 29,
+   since the year might be less than -999 or greater than 9999.
+
+   Subtract one for the sign bit if in case file timestamps can be negative;
+   subtract FLOOR_LOG2_SECONDS_PER_YEAR to yield an upper bound on how many
+   file timestamp bits might affect the year;
+   302 / 1000 is log10 (2) rounded up;
+   add one for integer division truncation;
+   add one more for a minus sign if file timestamps can be negative;
+   add 4 to allow for any 4-digit epoch year (e.g. 1970);
+   add 25 to allow for "-MM-DD HH:MM:SS.NNNNNNNNN".  */
+#define FLOOR_LOG2_SECONDS_PER_YEAR 24
+#define FILE_TIMESTAMP_PRINT_LEN_BOUND \
+  (((sizeof (FILE_TIMESTAMP) * CHAR_BIT - 1 - FLOOR_LOG2_SECONDS_PER_YEAR) \
+    * 302 / 1000) \
+   + 1 + 1 + 4 + 25)
+
+FILE_TIMESTAMP file_timestamp_cons (char const *, time_t, long int);
+FILE_TIMESTAMP file_timestamp_now (int *);
+void file_timestamp_sprintf (char *p, FILE_TIMESTAMP ts);
+
+/* Return the mtime of file F (a struct file *), caching it.
+   The value is NONEXISTENT_MTIME if the file does not exist.  */
+#define file_mtime(f) file_mtime_1 ((f), 1)
+/* Return the mtime of file F (a struct file *), caching it.
+   Don't search using vpath for the file--if it doesn't actually exist,
+   we don't find it.
+   The value is NONEXISTENT_MTIME if the file does not exist.  */
+#define file_mtime_no_search(f) file_mtime_1 ((f), 0)
+FILE_TIMESTAMP f_mtime (struct file *file, int search);
+#define file_mtime_1(f, v) \
+  ((f)->last_mtime == UNKNOWN_MTIME ? f_mtime ((f), v) : (f)->last_mtime)
+
+/* Special timestamp values.  */
+
+/* The file's timestamp is not yet known.  */
+#define UNKNOWN_MTIME 0
+
+/* The file does not exist.  */
+#define NONEXISTENT_MTIME 1
+
+/* The file does not exist, and we assume that it is older than any
+   actual file.  */
+#define OLD_MTIME 2
+
+/* The smallest and largest ordinary timestamps.  */
+#define ORDINARY_MTIME_MIN (OLD_MTIME + 1)
+#define ORDINARY_MTIME_MAX ((FILE_TIMESTAMP_S (NEW_MTIME) \
+                             << FILE_TIMESTAMP_LO_BITS) \
+                            + ORDINARY_MTIME_MIN + FILE_TIMESTAMPS_PER_S - 1)
+
+/* Modtime value to use for 'infinitely new'.  We used to get the current time
+   from the system and use that whenever we wanted 'new'.  But that causes
+   trouble when the machine running make and the machine holding a file have
+   different ideas about what time it is; and can also lose for 'force'
+   targets, which need to be considered newer than anything that depends on
+   them, even if said dependents' modtimes are in the future.  */
+#define NEW_MTIME INTEGER_TYPE_MAXIMUM (FILE_TIMESTAMP)
+
+#define check_renamed(file) \
+  while ((file)->renamed != 0) (file) = (file)->renamed /* No ; here.  */
+
+/* Have we snapped deps yet?  */
+extern int snapped_deps;

src/getopt.h

@@ -0,0 +1,130 @@
+/* Declarations for getopt.
+Copyright (C) 1989-2019 Free Software Foundation, Inc.
+
+NOTE: The canonical source of this file is maintained with the GNU C Library.
+Bugs can be reported to bug-glibc@gnu.org.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _GETOPT_H
+#define _GETOPT_H 1
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/* For communication from `getopt' to the caller.
+   When `getopt' finds an option that takes an argument,
+   the argument value is returned here.
+   Also, when `ordering' is RETURN_IN_ORDER,
+   each non-option ARGV-element is returned here.  */
+
+extern char *optarg;
+
+/* Index in ARGV of the next element to be scanned.
+   This is used for communication to and from the caller
+   and for communication between successive calls to `getopt'.
+
+   On entry to `getopt', zero means this is the first call; initialize.
+
+   When `getopt' returns -1, this is the index of the first of the
+   non-option elements that the caller should itself scan.
+
+   Otherwise, `optind' communicates from one call to the next
+   how much of ARGV has been scanned so far.  */
+
+extern int optind;
+
+/* Callers store zero here to inhibit the error message `getopt' prints
+   for unrecognized options.  */
+
+extern int opterr;
+
+/* Set to an option character which was unrecognized.  */
+
+extern int optopt;
+
+/* Describe the long-named options requested by the application.
+   The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
+   of `struct option' terminated by an element containing a name which is
+   zero.
+
+   The field `has_arg' is:
+   no_argument		(or 0) if the option does not take an argument,
+   required_argument	(or 1) if the option requires an argument,
+   optional_argument 	(or 2) if the option takes an optional argument.
+
+   If the field `flag' is not NULL, it points to a variable that is set
+   to the value given in the field `val' when the option is found, but
+   left unchanged if the option is not found.
+
+   To have a long-named option do something other than set an `int' to
+   a compiled-in constant, such as set a value from `optarg', set the
+   option's `flag' field to zero and its `val' field to a nonzero
+   value (the equivalent single-letter option character, if there is
+   one).  For long options that have a zero `flag' field, `getopt'
+   returns the contents of the `val' field.  */
+
+struct option
+{
+#if defined (__STDC__) && __STDC__
+  const char *name;
+#else
+  char *name;
+#endif
+  /* has_arg can't be an enum because some compilers complain about
+     type mismatches in all the code that assumes it is an int.  */
+  int has_arg;
+  int *flag;
+  int val;
+};
+
+/* Names for the values of the `has_arg' field of `struct option'.  */
+
+#define	no_argument		0
+#define required_argument	1
+#define optional_argument	2
+
+#if defined (__STDC__) && __STDC__
+#ifdef __GNU_LIBRARY__
+/* Many other libraries have conflicting prototypes for getopt, with
+   differences in the consts, in stdlib.h.  To avoid compilation
+   errors, only prototype getopt for the GNU C library.  */
+extern int getopt (int argc, char *const *argv, const char *shortopts);
+#else /* not __GNU_LIBRARY__ */
+extern int getopt ();
+#endif /* __GNU_LIBRARY__ */
+extern int getopt_long (int argc, char *const *argv, const char *shortopts,
+		        const struct option *longopts, int *longind);
+extern int getopt_long_only (int argc, char *const *argv,
+			     const char *shortopts,
+		             const struct option *longopts, int *longind);
+
+/* Internal only.  Users should not call this directly.  */
+extern int _getopt_internal (int argc, char *const *argv,
+			     const char *shortopts,
+		             const struct option *longopts, int *longind,
+			     int long_only);
+#else /* not __STDC__ */
+extern int getopt ();
+extern int getopt_long ();
+extern int getopt_long_only ();
+
+extern int _getopt_internal ();
+#endif /* __STDC__ */
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* getopt.h */

src/getopt1.c

@@ -0,0 +1,176 @@
+/* getopt_long and getopt_long_only entry points for GNU getopt.
+Copyright (C) 1987-1994, 1996-2019 Free Software Foundation, Inc.
+
+NOTE: The canonical source of this file is maintained with the GNU C Library.
+Bugs can be reported to bug-glibc@gnu.org.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "getopt.h"
+
+#if !defined __STDC__ || !__STDC__
+/* This is a separate conditional since some stdc systems
+   reject `defined (const)'.  */
+#ifndef const
+#define const
+#endif
+#endif
+
+#include <stdio.h>
+
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself.  This code is part of the GNU C
+   Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand `configure --with-gnu-libc' and omit the object files,
+   it is simpler to just do this in the source for each such file.  */
+
+#define GETOPT_INTERFACE_VERSION 2
+#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
+#include <gnu-versions.h>
+#if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
+#define ELIDE_CODE
+#endif
+#endif
+
+#ifndef ELIDE_CODE
+
+
+/* This needs to come after some library #include
+   to get __GNU_LIBRARY__ defined.  */
+#ifdef __GNU_LIBRARY__
+#include <stdlib.h>
+#endif
+
+#ifndef	NULL
+#define NULL 0
+#endif
+
+int
+getopt_long (int argc, char *const *argv, const char *options,
+             const struct option *long_options, int *opt_index)
+{
+  return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
+}
+
+/* Like getopt_long, but '-' as well as '--' can indicate a long option.
+   If an option that starts with '-' (not '--') doesn't match a long option,
+   but does match a short option, it is parsed as a short option
+   instead.  */
+
+int
+getopt_long_only (int argc, char *const *argv, const char *options,
+                  const struct option *long_options, int *opt_index)
+{
+  return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
+}
+
+
+#endif	/* Not ELIDE_CODE.  */
+
+#ifdef TEST
+
+#include <stdio.h>
+
+int
+main (int argc, char **argv)
+{
+  int c;
+  int digit_optind = 0;
+
+  while (1)
+    {
+      int this_option_optind = optind ? optind : 1;
+      int option_index = 0;
+      static struct option long_options[] =
+      {
+	{"add", 1, 0, 0},
+	{"append", 0, 0, 0},
+	{"delete", 1, 0, 0},
+	{"verbose", 0, 0, 0},
+	{"create", 0, 0, 0},
+	{"file", 1, 0, 0},
+	{0, 0, 0, 0}
+      };
+
+      c = getopt_long (argc, argv, "abc:d:0123456789",
+		       long_options, &option_index);
+      if (c == -1)
+	break;
+
+      switch (c)
+	{
+	case 0:
+	  printf ("option %s", long_options[option_index].name);
+	  if (optarg)
+	    printf (" with arg %s", optarg);
+	  printf ("\n");
+	  break;
+
+	case '0':
+	case '1':
+	case '2':
+	case '3':
+	case '4':
+	case '5':
+	case '6':
+	case '7':
+	case '8':
+	case '9':
+	  if (digit_optind != 0 && digit_optind != this_option_optind)
+	    printf ("digits occur in two different argv-elements.\n");
+	  digit_optind = this_option_optind;
+	  printf ("option %c\n", c);
+	  break;
+
+	case 'a':
+	  printf ("option a\n");
+	  break;
+
+	case 'b':
+	  printf ("option b\n");
+	  break;
+
+	case 'c':
+	  printf ("option c with value '%s'\n", optarg);
+	  break;
+
+	case 'd':
+	  printf ("option d with value '%s'\n", optarg);
+	  break;
+
+	case '?':
+	  break;
+
+	default:
+	  printf ("?? getopt returned character code 0%o ??\n", c);
+	}
+    }
+
+  if (optind < argc)
+    {
+      printf ("non-option ARGV-elements: ");
+      while (optind < argc)
+	printf ("%s ", argv[optind++]);
+      printf ("\n");
+    }
+
+  exit (0);
+}
+
+#endif /* TEST */

src/gettext.h

@@ -0,0 +1,57 @@
+/* Convenience header for conditional use of GNU <libintl.h>.
+Copyright (C) 1995-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBGETTEXT_H
+#define _LIBGETTEXT_H 1
+
+/* NLS can be disabled through the configure --disable-nls option.  */
+#if ENABLE_NLS
+
+/* Get declarations of GNU message catalog functions.  */
+# include <libintl.h>
+
+#else
+
+/* Disabled NLS.
+   The casts to 'const char *' serve the purpose of producing warnings
+   for invalid uses of the value returned from these functions.
+   On pre-ANSI systems without 'const', the config.h file is supposed to
+   contain "#define const".  */
+# define gettext(Msgid) ((const char *) (Msgid))
+# define dgettext(Domainname, Msgid) ((const char *) (Msgid))
+# define dcgettext(Domainname, Msgid, Category) ((const char *) (Msgid))
+# define ngettext(Msgid1, Msgid2, N) \
+    ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
+# define dngettext(Domainname, Msgid1, Msgid2, N) \
+    ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
+# define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \
+    ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
+# define textdomain(Domainname) ((const char *) (Domainname))
+# define bindtextdomain(Domainname, Dirname) ((const char *) (Dirname))
+# define bind_textdomain_codeset(Domainname, Codeset) ((const char *) (Codeset))
+
+#endif
+
+/* A pseudo function call that serves as a marker for the automated
+   extraction of messages, but does not call gettext().  The run-time
+   translation is done at a different place in the code.
+   The argument, String, should be a literal string.  Concatenated strings
+   and other string expressions won't work.
+   The macro's expansion is not parenthesized, so that it is suitable as
+   initializer for static 'char[]' or 'const char[]' variables.  */
+#define gettext_noop(String) String
+
+#endif /* _LIBGETTEXT_H */

src/gmk-default.scm

@@ -0,0 +1,53 @@
+;; Contents of the (gnu make) Guile module
+;; Copyright (C) 2011-2019 Free Software Foundation, Inc.
+;; This file is part of GNU Make.
+;;
+;; GNU Make is free software; you can redistribute it and/or modify it under
+;; the terms of the GNU General Public License as published by the Free
+;; Software Foundation; either version 3 of the License, or (at your option)
+;; any later version.
+;;
+;; GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+;; WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+;; FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+;; details.
+;;
+;; You should have received a copy of the GNU General Public License along
+;; with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+(define (to-string-maybe x)
+  (cond
+   ;; In GNU make, "false" is the empty string
+   ((or (not x)
+        (unspecified? x)
+        (variable? x)
+        (null? x)
+        (and (string? x) (string-null? x)))
+    #f)
+   ;; We want something not false... not sure about this
+   ((eq? x #t) "#t")
+   ;; Basics
+   ((or (symbol? x) (number? x))
+    (object->string x))
+   ((char? x)
+    (string x))
+   ;; Printable string (no special characters)
+   ((and (string? x) (string-every char-set:printing x))
+    x)
+   ;; No idea: fail
+   (else (error "Unknown object:" x))))
+
+(define (obj-to-str x)
+  (let ((acc '()))
+    (define (walk x)
+      (cond ((pair? x) (walk (car x)) (walk (cdr x)))
+            ((to-string-maybe x) => (lambda (s) (set! acc (cons s acc))))))
+    (walk x)
+    (string-join (reverse! acc))))
+
+;; Return the value of the GNU make variable V
+(define (gmk-var v)
+  (gmk-expand (format #f "$(~a)" (obj-to-str v))))
+
+;; Export the public interfaces
+(export gmk-expand gmk-eval gmk-var)

src/gnumake.h

@@ -0,0 +1,79 @@
+/* External interfaces usable by dynamic objects loaded into GNU Make.
+   --THIS API IS A "TECHNOLOGY PREVIEW" ONLY.  IT IS NOT A STABLE INTERFACE--
+
+Copyright (C) 2013-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _GNUMAKE_H_
+#define _GNUMAKE_H_
+
+/* Specify the location of elements read from makefiles.  */
+typedef struct
+  {
+    const char *filenm;
+    unsigned long lineno;
+  } gmk_floc;
+
+typedef char *(*gmk_func_ptr)(const char *nm, unsigned int argc, char **argv);
+
+#ifdef _WIN32
+# ifdef GMK_BUILDING_MAKE
+#  define GMK_EXPORT  __declspec(dllexport)
+# else
+#  define GMK_EXPORT  __declspec(dllimport)
+# endif
+#else
+# define GMK_EXPORT
+#endif
+
+/* Free memory returned by the gmk_expand() function.  */
+GMK_EXPORT void gmk_free (char *str);
+
+/* Allocate memory in GNU make's context.  */
+GMK_EXPORT char *gmk_alloc (unsigned int len);
+
+/* Run $(eval ...) on the provided string BUFFER.  */
+GMK_EXPORT void gmk_eval (const char *buffer, const gmk_floc *floc);
+
+/* Run GNU make expansion on the provided string STR.
+   Returns an allocated buffer that the caller must free with gmk_free().  */
+GMK_EXPORT char *gmk_expand (const char *str);
+
+/* Register a new GNU make function NAME (maximum of 255 chars long).
+   When the function is expanded in the makefile, FUNC will be invoked with
+   the appropriate arguments.
+
+   The return value of FUNC must be either NULL, in which case it expands to
+   the empty string, or a pointer to the result of the expansion in a string
+   created by gmk_alloc().  GNU make will free the memory when it's done.
+
+   MIN_ARGS is the minimum number of arguments the function requires.
+   MAX_ARGS is the maximum number of arguments (or 0 if there's no maximum).
+   MIN_ARGS and MAX_ARGS may not exceed 255.
+
+   The FLAGS value may be GMK_FUNC_DEFAULT, or one or more of the following
+   flags OR'd together:
+
+     GMK_FUNC_NOEXPAND: the arguments to the function will be not be expanded
+                        before FUNC is called.
+*/
+GMK_EXPORT void gmk_add_function (const char *name, gmk_func_ptr func,
+                                  unsigned int min_args, unsigned int max_args,
+                                  unsigned int flags);
+
+#define GMK_FUNC_DEFAULT    0x00
+#define GMK_FUNC_NOEXPAND   0x01
+
+#endif  /* _GNUMAKE_H_ */

src/guile.c

@@ -0,0 +1,159 @@
+/* GNU Guile interface for GNU Make.
+Copyright (C) 2011-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#ifdef HAVE_GUILE
+
+#include "gnumake.h"
+
+#include "debug.h"
+#include "filedef.h"
+#include "dep.h"
+#include "variable.h"
+
+#include <libguile.h>
+
+/* Pre-2.0 versions of Guile don't have a typedef for gsubr function types.  */
+#if SCM_MAJOR_VERSION < 2
+# define GSUBR_TYPE         SCM (*) ()
+/* Guile 1.x doesn't really support i18n.  */
+# define EVAL_STRING(_s)    scm_c_eval_string (_s)
+#else
+# define GSUBR_TYPE         scm_t_subr
+# define EVAL_STRING(_s)    scm_eval_string (scm_from_utf8_string (_s))
+#endif
+
+static SCM make_mod = SCM_EOL;
+static SCM obj_to_str = SCM_EOL;
+
+/* Convert an SCM object into a string.  */
+static char *
+cvt_scm_to_str (SCM obj)
+{
+  return scm_to_locale_string (scm_call_1 (obj_to_str, obj));
+}
+
+/* Perform the GNU make expansion function.  */
+static SCM
+guile_expand_wrapper (SCM obj)
+{
+  char *str = cvt_scm_to_str (obj);
+  SCM ret;
+  char *res;
+
+  DB (DB_BASIC, (_("guile: Expanding '%s'\n"), str));
+  res = gmk_expand (str);
+  ret = scm_from_locale_string (res);
+
+  free (str);
+  free (res);
+
+  return ret;
+}
+
+/* Perform the GNU make eval function.  */
+static SCM
+guile_eval_wrapper (SCM obj)
+{
+  char *str = cvt_scm_to_str (obj);
+
+  DB (DB_BASIC, (_("guile: Evaluating '%s'\n"), str));
+  gmk_eval (str, 0);
+
+  return SCM_BOOL_F;
+}
+
+/* Invoked by scm_c_define_module(), in the context of the GNU make module.  */
+static void
+guile_define_module (void *data UNUSED)
+{
+/* Ingest the predefined Guile module for GNU make.  */
+#include "gmk-default.h"
+
+  /* Register a subr for GNU make's eval capability.  */
+  scm_c_define_gsubr ("gmk-expand", 1, 0, 0, (GSUBR_TYPE) guile_expand_wrapper);
+
+  /* Register a subr for GNU make's eval capability.  */
+  scm_c_define_gsubr ("gmk-eval", 1, 0, 0, (GSUBR_TYPE) guile_eval_wrapper);
+
+  /* Define the rest of the module.  */
+  scm_c_eval_string (GUILE_module_defn);
+}
+
+/* Initialize the GNU make Guile module.  */
+static void *
+guile_init (void *arg UNUSED)
+{
+  /* Define the module.  */
+  make_mod = scm_c_define_module ("gnu make", guile_define_module, NULL);
+
+  /* Get a reference to the object-to-string translator, for later.  */
+  obj_to_str = scm_variable_ref (scm_c_module_lookup (make_mod, "obj-to-str"));
+
+  /* Import the GNU make module exports into the generic space.  */
+  scm_c_eval_string ("(use-modules (gnu make))");
+
+  return NULL;
+}
+
+static void *
+internal_guile_eval (void *arg)
+{
+  return cvt_scm_to_str (EVAL_STRING (arg));
+}
+
+/* This is the function registered with make  */
+static char *
+func_guile (const char *funcname UNUSED, unsigned int argc UNUSED, char **argv)
+{
+  static int init = 0;
+
+  if (! init)
+    {
+      /* Initialize the Guile interpreter.  */
+      scm_with_guile (guile_init, NULL);
+      init = 1;
+    }
+
+  if (argv[0] && argv[0][0] != '\0')
+    return scm_with_guile (internal_guile_eval, argv[0]);
+
+  return NULL;
+}
+
+/* ----- Public interface ----- */
+
+/* We could send the flocp to define_new_function(), but since guile is
+   "kind of" built-in, that didn't seem so useful.  */
+int
+guile_gmake_setup (const floc *flocp UNUSED)
+{
+  /* Create a make function "guile".  */
+  gmk_add_function ("guile", func_guile, 0, 1, GMK_FUNC_DEFAULT);
+
+  return 1;
+}
+
+#else
+
+int
+guile_gmake_setup (const floc *flocp UNUSED)
+{
+  return 1;
+}
+
+#endif

src/hash.c

@@ -0,0 +1,480 @@
+/* hash.c -- hash table maintenance
+Copyright (C) 1995, 1999, 2002, 2010 Free Software Foundation, Inc.
+Written by Greg McGary <gkm@gnu.org> <greg@mcgary.org>
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "hash.h"
+
+#define CALLOC(t, n) ((t *) xcalloc (sizeof (t) * (n)))
+#define MALLOC(t, n) ((t *) xmalloc (sizeof (t) * (n)))
+#define REALLOC(o, t, n) ((t *) xrealloc ((o), sizeof (t) * (n)))
+#define CLONE(o, t, n) ((t *) memcpy (MALLOC (t, (n)), (o), sizeof (t) * (n)))
+
+static void hash_rehash __P((struct hash_table* ht));
+static unsigned long round_up_2 __P((unsigned long rough));
+
+/* Implement double hashing with open addressing.  The table size is
+   always a power of two.  The secondary ('increment') hash function
+   is forced to return an odd-value, in order to be relatively prime
+   to the table size.  This guarantees that the increment can
+   potentially hit every slot in the table during collision
+   resolution.  */
+
+void *hash_deleted_item = &hash_deleted_item;
+
+/* Force the table size to be a power of two, possibly rounding up the
+   given size.  */
+
+void
+hash_init (struct hash_table *ht, unsigned long size,
+           hash_func_t hash_1, hash_func_t hash_2, hash_cmp_func_t hash_cmp)
+{
+  ht->ht_size = round_up_2 (size);
+  ht->ht_empty_slots = ht->ht_size;
+  ht->ht_vec = (void**) CALLOC (struct token *, ht->ht_size);
+  if (ht->ht_vec == 0)
+    {
+      fprintf (stderr, _("can't allocate %lu bytes for hash table: memory exhausted"),
+               ht->ht_size * (unsigned long) sizeof (struct token *));
+      exit (MAKE_TROUBLE);
+    }
+
+  ht->ht_capacity = ht->ht_size - (ht->ht_size / 16); /* 93.75% loading factor */
+  ht->ht_fill = 0;
+  ht->ht_collisions = 0;
+  ht->ht_lookups = 0;
+  ht->ht_rehashes = 0;
+  ht->ht_hash_1 = hash_1;
+  ht->ht_hash_2 = hash_2;
+  ht->ht_compare = hash_cmp;
+}
+
+/* Load an array of items into 'ht'.  */
+
+void
+hash_load (struct hash_table *ht, void *item_table,
+           unsigned long cardinality, unsigned long size)
+{
+  char *items = (char *) item_table;
+  while (cardinality--)
+    {
+      hash_insert (ht, items);
+      items += size;
+    }
+}
+
+/* Returns the address of the table slot matching 'key'.  If 'key' is
+   not found, return the address of an empty slot suitable for
+   inserting 'key'.  The caller is responsible for incrementing
+   ht_fill on insertion.  */
+
+void **
+hash_find_slot (struct hash_table *ht, const void *key)
+{
+  void **slot;
+  void **deleted_slot = 0;
+  unsigned int hash_2 = 0;
+  unsigned int hash_1 = (*ht->ht_hash_1) (key);
+
+  ht->ht_lookups++;
+  for (;;)
+    {
+      hash_1 &= (ht->ht_size - 1);
+      slot = &ht->ht_vec[hash_1];
+
+      if (*slot == 0)
+        return (deleted_slot ? deleted_slot : slot);
+      if (*slot == hash_deleted_item)
+        {
+          if (deleted_slot == 0)
+            deleted_slot = slot;
+        }
+      else
+        {
+          if (key == *slot)
+            return slot;
+          if ((*ht->ht_compare) (key, *slot) == 0)
+            return slot;
+          ht->ht_collisions++;
+        }
+      if (!hash_2)
+          hash_2 = (*ht->ht_hash_2) (key) | 1;
+      hash_1 += hash_2;
+    }
+}
+
+void *
+hash_find_item (struct hash_table *ht, const void *key)
+{
+  void **slot = hash_find_slot (ht, key);
+  return ((HASH_VACANT (*slot)) ? 0 : *slot);
+}
+
+void *
+hash_insert (struct hash_table *ht, const void *item)
+{
+  void **slot = hash_find_slot (ht, item);
+  const void *old_item = *slot;
+  hash_insert_at (ht, item, slot);
+  return (void *)((HASH_VACANT (old_item)) ? 0 : old_item);
+}
+
+void *
+hash_insert_at (struct hash_table *ht, const void *item, const void *slot)
+{
+  const void *old_item = *(void **) slot;
+  if (HASH_VACANT (old_item))
+    {
+      ht->ht_fill++;
+      if (old_item == 0)
+        ht->ht_empty_slots--;
+      old_item = item;
+    }
+  *(void const **) slot = item;
+  if (ht->ht_empty_slots < ht->ht_size - ht->ht_capacity)
+    {
+      hash_rehash (ht);
+      return (void *) hash_find_slot (ht, item);
+    }
+  else
+    return (void *) slot;
+}
+
+void *
+hash_delete (struct hash_table *ht, const void *item)
+{
+  void **slot = hash_find_slot (ht, item);
+  return hash_delete_at (ht, slot);
+}
+
+void *
+hash_delete_at (struct hash_table *ht, const void *slot)
+{
+  void *item = *(void **) slot;
+  if (!HASH_VACANT (item))
+    {
+      *(void const **) slot = hash_deleted_item;
+      ht->ht_fill--;
+      return item;
+    }
+  else
+    return 0;
+}
+
+void
+hash_free_items (struct hash_table *ht)
+{
+  void **vec = ht->ht_vec;
+  void **end = &vec[ht->ht_size];
+  for (; vec < end; vec++)
+    {
+      void *item = *vec;
+      if (!HASH_VACANT (item))
+        free (item);
+      *vec = 0;
+    }
+  ht->ht_fill = 0;
+  ht->ht_empty_slots = ht->ht_size;
+}
+
+void
+hash_delete_items (struct hash_table *ht)
+{
+  void **vec = ht->ht_vec;
+  void **end = &vec[ht->ht_size];
+  for (; vec < end; vec++)
+    *vec = 0;
+  ht->ht_fill = 0;
+  ht->ht_collisions = 0;
+  ht->ht_lookups = 0;
+  ht->ht_rehashes = 0;
+  ht->ht_empty_slots = ht->ht_size;
+}
+
+void
+hash_free (struct hash_table *ht, int free_items)
+{
+  if (free_items)
+    hash_free_items (ht);
+  else
+    {
+      ht->ht_fill = 0;
+      ht->ht_empty_slots = ht->ht_size;
+    }
+  free (ht->ht_vec);
+  ht->ht_vec = 0;
+  ht->ht_capacity = 0;
+}
+
+void
+hash_map (struct hash_table *ht, hash_map_func_t map)
+{
+  void **slot;
+  void **end = &ht->ht_vec[ht->ht_size];
+
+  for (slot = ht->ht_vec; slot < end; slot++)
+    {
+      if (!HASH_VACANT (*slot))
+        (*map) (*slot);
+    }
+}
+
+void
+hash_map_arg (struct hash_table *ht, hash_map_arg_func_t map, void *arg)
+{
+  void **slot;
+  void **end = &ht->ht_vec[ht->ht_size];
+
+  for (slot = ht->ht_vec; slot < end; slot++)
+    {
+      if (!HASH_VACANT (*slot))
+        (*map) (*slot, arg);
+    }
+}
+
+/* Double the size of the hash table in the event of overflow... */
+
+static void
+hash_rehash (struct hash_table *ht)
+{
+  unsigned long old_ht_size = ht->ht_size;
+  void **old_vec = ht->ht_vec;
+  void **ovp;
+
+  if (ht->ht_fill >= ht->ht_capacity)
+    {
+      ht->ht_size *= 2;
+      ht->ht_capacity = ht->ht_size - (ht->ht_size >> 4);
+    }
+  ht->ht_rehashes++;
+  ht->ht_vec = (void **) CALLOC (struct token *, ht->ht_size);
+
+  for (ovp = old_vec; ovp < &old_vec[old_ht_size]; ovp++)
+    {
+      if (! HASH_VACANT (*ovp))
+        {
+          void **slot = hash_find_slot (ht, *ovp);
+          *slot = *ovp;
+        }
+    }
+  ht->ht_empty_slots = ht->ht_size - ht->ht_fill;
+  free (old_vec);
+}
+
+void
+hash_print_stats (struct hash_table *ht, FILE *out_FILE)
+{
+  fprintf (out_FILE, _("Load=%lu/%lu=%.0f%%, "), ht->ht_fill, ht->ht_size,
+           100.0 * (double) ht->ht_fill / (double) ht->ht_size);
+  fprintf (out_FILE, _("Rehash=%u, "), ht->ht_rehashes);
+  fprintf (out_FILE, _("Collisions=%lu/%lu=%.0f%%"), ht->ht_collisions, ht->ht_lookups,
+           (ht->ht_lookups
+            ? (100.0 * (double) ht->ht_collisions / (double) ht->ht_lookups)
+            : 0));
+}
+
+/* Dump all items into a NULL-terminated vector.  Use the
+   user-supplied vector, or malloc one.  */
+
+void **
+hash_dump (struct hash_table *ht, void **vector_0, qsort_cmp_t compare)
+{
+  void **vector;
+  void **slot;
+  void **end = &ht->ht_vec[ht->ht_size];
+
+  if (vector_0 == 0)
+    vector_0 = MALLOC (void *, ht->ht_fill + 1);
+  vector = vector_0;
+
+  for (slot = ht->ht_vec; slot < end; slot++)
+    if (!HASH_VACANT (*slot))
+      *vector++ = *slot;
+  *vector = 0;
+
+  if (compare)
+    qsort (vector_0, ht->ht_fill, sizeof (void *), compare);
+  return vector_0;
+}
+
+/* Round a given number up to the nearest power of 2. */
+
+static unsigned long
+round_up_2 (unsigned long n)
+{
+  n |= (n >> 1);
+  n |= (n >> 2);
+  n |= (n >> 4);
+  n |= (n >> 8);
+  n |= (n >> 16);
+
+#if !defined(HAVE_LIMITS_H) || ULONG_MAX > 4294967295
+  /* We only need this on systems where unsigned long is >32 bits.  */
+  n |= (n >> 32);
+#endif
+
+  return n + 1;
+}
+
+#define rol32(v, n) \
+        ((v) << (n) | ((v) >> (32 - (n))))
+
+/* jhash_mix -- mix 3 32-bit values reversibly. */
+#define jhash_mix(a, b, c)                      \
+{                                               \
+        a -= c;  a ^= rol32(c, 4);  c += b;     \
+        b -= a;  b ^= rol32(a, 6);  a += c;     \
+        c -= b;  c ^= rol32(b, 8);  b += a;     \
+        a -= c;  a ^= rol32(c, 16); c += b;     \
+        b -= a;  b ^= rol32(a, 19); a += c;     \
+        c -= b;  c ^= rol32(b, 4);  b += a;     \
+}
+
+/* jhash_final - final mixing of 3 32-bit values (a,b,c) into c */
+#define jhash_final(a, b, c)                    \
+{                                               \
+        c ^= b; c -= rol32(b, 14);              \
+        a ^= c; a -= rol32(c, 11);              \
+        b ^= a; b -= rol32(a, 25);              \
+        c ^= b; c -= rol32(b, 16);              \
+        a ^= c; a -= rol32(c, 4);               \
+        b ^= a; b -= rol32(a, 14);              \
+        c ^= b; c -= rol32(b, 24);              \
+}
+
+/* An arbitrary initial parameter */
+#define JHASH_INITVAL           0xdeadbeef
+
+#define sum_get_unaligned_32(r, p)              \
+  do {                                          \
+    unsigned int val;                           \
+    memcpy(&val, (p), 4);                       \
+    r += val;                                   \
+  } while(0);
+
+unsigned jhash(unsigned const char *k, int length)
+{
+  unsigned int a, b, c;
+
+  /* Set up the internal state */
+  a = b = c = JHASH_INITVAL + length;
+
+  /* All but the last block: affect some 32 bits of (a,b,c) */
+  while (length > 12) {
+    sum_get_unaligned_32(a, k);
+    sum_get_unaligned_32(b, k + 4);
+    sum_get_unaligned_32(c, k + 8);
+    jhash_mix(a, b, c);
+    length -= 12;
+    k += 12;
+  }
+
+  if (!length)
+    return c;
+
+  if (length > 8)
+    {
+      sum_get_unaligned_32(a, k);
+      length -= 4;
+      k += 4;
+    }
+  if (length > 4)
+    {
+      sum_get_unaligned_32(b, k);
+      length -= 4;
+      k += 4;
+    }
+
+  if (length == 4)
+    c += (unsigned)k[3]<<24;
+  if (length >= 3)
+    c += (unsigned)k[2]<<16;
+  if (length >= 2)
+    c += (unsigned)k[1]<<8;
+  c += k[0];
+  jhash_final(a, b, c);
+  return c;
+}
+
+#ifdef WORDS_BIGENDIAN
+/* The ifs are ordered from the first byte in memory to the last.  */
+#define sum_up_to_nul(r, p, flag)         \
+  do {                                    \
+    unsigned int val;                     \
+    memcpy(&val, (p), 4);                 \
+    if ((val & 0xFF000000) == 0)          \
+      flag = 1;                           \
+    else if ((val & 0xFF0000) == 0)       \
+      r += val & ~0xFFFF, flag = 1;       \
+    else if ((val & 0xFF00) == 0)         \
+      r += val & ~0xFF, flag = 1;         \
+    else                                  \
+      r += val, flag = (val & 0xFF) == 0; \
+  } while (0)
+#else
+/* First detect the presence of zeroes.  If there is none, we can
+   sum the 4 bytes directly.  Otherwise, the ifs are ordered as in the
+   big endian case, from the first byte in memory to the last.  */
+#define sum_up_to_nul(r, p, flag)                   \
+  do {                                              \
+    unsigned int val;                               \
+    unsigned int zeroes;                            \
+    memcpy(&val, (p), 4);                           \
+    zeroes = ((val - 0x01010101) & ~val);           \
+    if (!(zeroes & 0x80808080))                     \
+      r += val;                                     \
+    else if ((val & 0xFF) == 0)                     \
+      flag = 1;                                     \
+    else if ((val & 0xFF00) == 0)                   \
+      r += val & 0xFF, flag = 1;                    \
+    else if ((val & 0xFF0000) == 0)                 \
+      r += val & 0xFFFF, flag = 1;                  \
+    else                                            \
+      r += val, flag = 1;                           \
+  } while (0)
+#endif
+
+/* This function performs magic which is correct but causes ASAN heartburn
+   when we pass in a global constant string (at least).  */
+__attribute__((no_sanitize_address))
+unsigned jhash_string(unsigned const char *k)
+{
+  unsigned int a, b, c;
+  unsigned int have_nul = 0;
+  unsigned const char *start = k;
+
+  /* Set up the internal state */
+  a = b = c = JHASH_INITVAL;
+
+  /* All but the last block: affect some 32 bits of (a,b,c) */
+  for (;;) {
+    sum_up_to_nul(a, k, have_nul);
+    if (have_nul)
+      break;
+    k += 4;
+    sum_up_to_nul(b, k, have_nul);
+    if (have_nul)
+      break;
+    k += 4;
+    sum_up_to_nul(c, k, have_nul);
+    if (have_nul)
+      break;
+    k += 4;
+    jhash_mix(a, b, c);
+  }
+
+  jhash_final(a, b, c);
+  return c + (unsigned) (k - start);
+}

src/hash.h

@@ -0,0 +1,234 @@
+/* hash.h -- decls for hash table
+Copyright (C) 1995, 1999, 2002, 2010 Free Software Foundation, Inc.
+Written by Greg McGary <gkm@gnu.org> <greg@mcgary.org>
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _hash_h_
+#define _hash_h_
+
+#include <stdio.h>
+#include <ctype.h>
+
+#if defined __cplusplus || (defined __STDC__ && __STDC__) || defined WINDOWS32
+# if !defined __GLIBC__ || !defined __P
+#  undef	__P
+#  define __P(protos)	protos
+# endif
+#else /* Not C++ or ANSI C.  */
+# undef	__P
+# define __P(protos)	()
+/* We can get away without defining 'const' here only because in this file
+   it is used only inside the prototype for 'fnmatch', which is elided in
+   non-ANSI C where 'const' is problematical.  */
+#endif /* C++ or ANSI C.  */
+
+typedef unsigned long (*hash_func_t) __P((void const *key));
+typedef int (*hash_cmp_func_t) __P((void const *x, void const *y));
+typedef void (*hash_map_func_t) __P((void const *item));
+typedef void (*hash_map_arg_func_t) __P((void const *item, void *arg));
+
+struct hash_table
+{
+  void **ht_vec;
+  hash_func_t ht_hash_1;	/* primary hash function */
+  hash_func_t ht_hash_2;	/* secondary hash function */
+  hash_cmp_func_t ht_compare;	/* comparison function */
+  unsigned long ht_size;	/* total number of slots (power of 2) */
+  unsigned long ht_capacity;	/* usable slots, limited by loading-factor */
+  unsigned long ht_fill;	/* items in table */
+  unsigned long ht_empty_slots;	/* empty slots not including deleted slots */
+  unsigned long ht_collisions;	/* # of failed calls to comparison function */
+  unsigned long ht_lookups;	/* # of queries */
+  unsigned int ht_rehashes;	/* # of times we've expanded table */
+};
+
+typedef int (*qsort_cmp_t) __P((void const *, void const *));
+
+void hash_init __P((struct hash_table *ht, unsigned long size,
+		    hash_func_t hash_1, hash_func_t hash_2, hash_cmp_func_t hash_cmp));
+void hash_load __P((struct hash_table *ht, void *item_table,
+		    unsigned long cardinality, unsigned long size));
+void **hash_find_slot __P((struct hash_table *ht, void const *key));
+void *hash_find_item __P((struct hash_table *ht, void const *key));
+void *hash_insert __P((struct hash_table *ht, const void *item));
+void *hash_insert_at __P((struct hash_table *ht, const void *item, void const *slot));
+void *hash_delete __P((struct hash_table *ht, void const *item));
+void *hash_delete_at __P((struct hash_table *ht, void const *slot));
+void hash_delete_items __P((struct hash_table *ht));
+void hash_free_items __P((struct hash_table *ht));
+void hash_free __P((struct hash_table *ht, int free_items));
+void hash_map __P((struct hash_table *ht, hash_map_func_t map));
+void hash_map_arg __P((struct hash_table *ht, hash_map_arg_func_t map, void *arg));
+void hash_print_stats __P((struct hash_table *ht, FILE *out_FILE));
+void **hash_dump __P((struct hash_table *ht, void **vector_0, qsort_cmp_t compare));
+
+extern unsigned jhash(unsigned char const *key, int n);
+extern unsigned jhash_string(unsigned char const *key);
+
+extern void *hash_deleted_item;
+#define HASH_VACANT(item) ((item) == 0 || (void *) (item) == hash_deleted_item)
+
+
+/* hash and comparison macros for case-sensitive string keys. */
+
+/* Due to the strcache, it's not uncommon for the string pointers to
+   be identical.  Take advantage of that to short-circuit string compares.  */
+
+#define STRING_HASH_1(KEY, RESULT) do { \
+  unsigned char const *_key_ = (unsigned char const *) (KEY); \
+  (RESULT) += jhash_string(_key_); \
+} while (0)
+#define return_STRING_HASH_1(KEY) do { \
+  unsigned long _result_ = 0; \
+  STRING_HASH_1 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+/* No need for a second hash because jhash already provides
+   pretty good results.  However, do evaluate the arguments
+   to avoid warnings.  */
+#define STRING_HASH_2(KEY, RESULT) do { \
+  (void)(KEY); \
+} while (0)
+#define return_STRING_HASH_2(KEY) do { \
+  unsigned long _result_ = 0; \
+  STRING_HASH_2 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+#define STRING_COMPARE(X, Y, RESULT) do { \
+    RESULT = (X) == (Y) ? 0 : strcmp ((X), (Y)); \
+} while (0)
+#define return_STRING_COMPARE(X, Y) do { \
+  return (X) == (Y) ? 0 : strcmp ((X), (Y)); \
+} while (0)
+
+
+#define STRING_N_HASH_1(KEY, N, RESULT) do { \
+  unsigned char const *_key_ = (unsigned char const *) (KEY); \
+  (RESULT) += jhash(_key_, N); \
+} while (0)
+
+#define return_STRING_N_HASH_1(KEY, N) do { \
+  unsigned long _result_ = 0; \
+  STRING_N_HASH_1 ((KEY), (N), _result_); \
+  return _result_; \
+} while (0)
+
+/* No need for a second hash because jhash already provides
+   pretty good results.  However, do evaluate the arguments
+   to avoid warnings.  */
+#define STRING_N_HASH_2(KEY, N, RESULT) do { \
+  (void)(KEY); \
+  (void)(N); \
+} while (0)
+
+#define return_STRING_N_HASH_2(KEY, N) do { \
+  unsigned long _result_ = 0; \
+  STRING_N_HASH_2 ((KEY), (N), _result_); \
+  return _result_; \
+} while (0)
+
+#define STRING_N_COMPARE(X, Y, N, RESULT) do { \
+  RESULT = (X) == (Y) ? 0 : memcmp ((X), (Y), (N)); \
+} while (0)
+#define return_STRING_N_COMPARE(X, Y, N) do { \
+  return (X) == (Y) ? 0 : memcmp ((X), (Y), (N)); \
+} while (0)
+
+#ifdef HAVE_CASE_INSENSITIVE_FS
+
+/* hash and comparison macros for case-insensitive string _key_s. */
+
+#define ISTRING_HASH_1(KEY, RESULT) do { \
+  unsigned char const *_key_ = (unsigned char const *) (KEY) - 1; \
+  while (*++_key_) \
+    (RESULT) += ((isupper (*_key_) ? tolower (*_key_) : *_key_) << (_key_[1] & 0xf)); \
+} while (0)
+#define return_ISTRING_HASH_1(KEY) do { \
+  unsigned long _result_ = 0; \
+  ISTRING_HASH_1 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+#define ISTRING_HASH_2(KEY, RESULT) do { \
+  unsigned char const *_key_ = (unsigned char const *) (KEY) - 1; \
+  while (*++_key_) \
+    (RESULT) += ((isupper (*_key_) ? tolower (*_key_) : *_key_) << (_key_[1] & 0x7)); \
+} while (0)
+#define return_ISTRING_HASH_2(KEY) do { \
+  unsigned long _result_ = 0; \
+  ISTRING_HASH_2 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+#define ISTRING_COMPARE(X, Y, RESULT) do { \
+  RESULT = (X) == (Y) ? 0 : strcasecmp ((X), (Y)); \
+} while (0)
+#define return_ISTRING_COMPARE(X, Y) do { \
+  return (X) == (Y) ? 0 : strcasecmp ((X), (Y)); \
+} while (0)
+
+#else
+
+#define ISTRING_HASH_1(KEY, RESULT) STRING_HASH_1 ((KEY), (RESULT))
+#define return_ISTRING_HASH_1(KEY) return_STRING_HASH_1 (KEY)
+
+#define ISTRING_HASH_2(KEY, RESULT) STRING_HASH_2 ((KEY), (RESULT))
+#define return_ISTRING_HASH_2(KEY) return_STRING_HASH_2 (KEY)
+
+#define ISTRING_COMPARE(X, Y, RESULT) STRING_COMPARE ((X), (Y), (RESULT))
+#define return_ISTRING_COMPARE(X, Y) return_STRING_COMPARE ((X), (Y))
+
+#endif
+
+/* hash and comparison macros for integer _key_s. */
+
+#define INTEGER_HASH_1(KEY, RESULT) do { \
+  (RESULT) += ((unsigned long)(KEY)); \
+} while (0)
+#define return_INTEGER_HASH_1(KEY) do { \
+  unsigned long _result_ = 0; \
+  INTEGER_HASH_1 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+#define INTEGER_HASH_2(KEY, RESULT) do { \
+  (RESULT) += ~((unsigned long)(KEY)); \
+} while (0)
+#define return_INTEGER_HASH_2(KEY) do { \
+  unsigned long _result_ = 0; \
+  INTEGER_HASH_2 ((KEY), _result_); \
+  return _result_; \
+} while (0)
+
+#define INTEGER_COMPARE(X, Y, RESULT) do { \
+  (RESULT) = X - Y; \
+} while (0)
+#define return_INTEGER_COMPARE(X, Y) do { \
+  int _result_; \
+  INTEGER_COMPARE (X, Y, _result_); \
+  return _result_; \
+} while (0)
+
+/* hash and comparison macros for address keys. */
+
+#define ADDRESS_HASH_1(KEY, RESULT) INTEGER_HASH_1 (((unsigned long)(KEY)) >> 3, (RESULT))
+#define ADDRESS_HASH_2(KEY, RESULT) INTEGER_HASH_2 (((unsigned long)(KEY)) >> 3, (RESULT))
+#define ADDRESS_COMPARE(X, Y, RESULT) INTEGER_COMPARE ((X), (Y), (RESULT))
+#define return_ADDRESS_HASH_1(KEY) return_INTEGER_HASH_1 (((unsigned long)(KEY)) >> 3)
+#define return_ADDRESS_HASH_2(KEY) return_INTEGER_HASH_2 (((unsigned long)(KEY)) >> 3)
+#define return_ADDRESS_COMPARE(X, Y) return_INTEGER_COMPARE ((X), (Y))
+
+#endif /* not _hash_h_ */

src/implicit.c

@@ -0,0 +1,999 @@
+/* Implicit rule searching for GNU Make.
+Copyright (C) 1988-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "filedef.h"
+#include "rule.h"
+#include "dep.h"
+#include "debug.h"
+#include "variable.h"
+#include "job.h"      /* struct child, used inside commands.h */
+#include "commands.h" /* set_file_variables */
+
+static int pattern_search (struct file *file, int archive,
+                           unsigned int depth, unsigned int recursions);
+
+/* For a FILE which has no commands specified, try to figure out some
+   from the implicit pattern rules.
+   Returns 1 if a suitable implicit rule was found,
+   after modifying FILE to contain the appropriate commands and deps,
+   or returns 0 if no implicit rule was found.  */
+
+int
+try_implicit_rule (struct file *file, unsigned int depth)
+{
+  DBF (DB_IMPLICIT, _("Looking for an implicit rule for '%s'.\n"));
+
+  /* The order of these searches was previously reversed.  My logic now is
+     that since the non-archive search uses more information in the target
+     (the archive search omits the archive name), it is more specific and
+     should come first.  */
+
+  if (pattern_search (file, 0, depth, 0))
+    return 1;
+
+#ifndef NO_ARCHIVES
+  /* If this is an archive member reference, use just the
+     archive member name to search for implicit rules.  */
+  if (ar_name (file->name))
+    {
+      DBF (DB_IMPLICIT,
+           _("Looking for archive-member implicit rule for '%s'.\n"));
+      if (pattern_search (file, 1, depth, 0))
+        return 1;
+    }
+#endif
+
+  return 0;
+}
+
+
+/* Scans the BUFFER for the next word with whitespace as a separator.
+   Returns the pointer to the beginning of the word. LENGTH hold the
+   length of the word.  */
+
+static const char *
+get_next_word (const char *buffer, size_t *length)
+{
+  const char *p = buffer, *beg;
+  char c;
+
+  /* Skip any leading whitespace.  */
+  NEXT_TOKEN (p);
+
+  beg = p;
+  c = *(p++);
+
+  if (c == '\0')
+    return 0;
+
+
+  /* We already found the first value of "c", above.  */
+  while (1)
+    {
+      char closeparen;
+      int count;
+
+      switch (c)
+        {
+        case '\0':
+        case ' ':
+        case '\t':
+          goto done_word;
+
+        case '$':
+          c = *(p++);
+          if (c == '$')
+            break;
+
+          /* This is a variable reference, so read it to the matching
+             close paren.  */
+
+          if (c == '(')
+            closeparen = ')';
+          else if (c == '{')
+            closeparen = '}';
+          else
+            /* This is a single-letter variable reference.  */
+            break;
+
+          for (count = 0; *p != '\0'; ++p)
+            {
+              if (*p == c)
+                ++count;
+              else if (*p == closeparen && --count < 0)
+                {
+                  ++p;
+                  break;
+                }
+            }
+          break;
+
+        case '|':
+          goto done;
+
+        default:
+          break;
+        }
+
+      c = *(p++);
+    }
+ done_word:
+  --p;
+
+ done:
+  if (length)
+    *length = p - beg;
+
+  return beg;
+}
+
+/* This structure stores information about the expanded prerequisites for a
+   pattern rule.  NAME is always set to the strcache'd name of the prereq.
+   FILE and PATTERN will be set for intermediate files only.  IGNORE_MTIME is
+   copied from the prerequisite we expanded.
+ */
+struct patdeps
+  {
+    const char *name;
+    const char *pattern;
+    struct file *file;
+    unsigned int ignore_mtime : 1;
+  };
+
+/* This structure stores information about pattern rules that we need
+   to try.
+*/
+struct tryrule
+  {
+    struct rule *rule;
+
+    /* Stem length for this match. */
+    size_t stemlen;
+
+    /* Index of the target in this rule that matched the file. */
+    unsigned int matches;
+
+    /* Definition order of this rule. Used to implement stable sort.*/
+    unsigned int order;
+
+    /* Nonzero if the LASTSLASH logic was used in matching this rule. */
+    char checked_lastslash;
+  };
+
+int
+stemlen_compare (const void *v1, const void *v2)
+{
+  const struct tryrule *r1 = v1;
+  const struct tryrule *r2 = v2;
+  int r = (int) (r1->stemlen - r2->stemlen);
+  return r != 0 ? r : (int) (r1->order - r2->order);
+}
+
+/* Search the pattern rules for a rule with an existing dependency to make
+   FILE.  If a rule is found, the appropriate commands and deps are put in FILE
+   and 1 is returned.  If not, 0 is returned.
+
+   If ARCHIVE is nonzero, FILE->name is of the form "LIB(MEMBER)".  A rule for
+   "(MEMBER)" will be searched for, and "(MEMBER)" will not be chopped up into
+   directory and filename parts.
+
+   If an intermediate file is found by pattern search, the intermediate file
+   is set up as a target by the recursive call and is also made a dependency
+   of FILE.
+
+   DEPTH is used for debugging messages.  */
+
+static int
+pattern_search (struct file *file, int archive,
+                unsigned int depth, unsigned int recursions)
+{
+  /* Filename we are searching for a rule for.  */
+  const char *filename = archive ? strchr (file->name, '(') : file->name;
+
+  /* Length of FILENAME.  */
+  size_t namelen = strlen (filename);
+
+  /* The last slash in FILENAME (or nil if there is none).  */
+  const char *lastslash;
+
+  /* This is a file-object used as an argument in
+     recursive calls.  It never contains any data
+     except during a recursive call.  */
+  struct file *int_file = 0;
+
+  /* List of dependencies found recursively.  */
+  unsigned int max_deps = max_pattern_deps;
+  struct patdeps *deplist = xmalloc (max_deps * sizeof (struct patdeps));
+  struct patdeps *pat = deplist;
+
+  /* Names of possible dependencies are constructed in this buffer.  */
+  char *depname = alloca (namelen + max_pattern_dep_length);
+
+  /* The start and length of the stem of FILENAME for the current rule.  */
+  const char *stem = 0;
+  size_t stemlen = 0;
+  size_t fullstemlen = 0;
+
+  /* Buffer in which we store all the rules that are possibly applicable.  */
+  struct tryrule *tryrules = xmalloc (num_pattern_rules * max_pattern_targets
+                                      * sizeof (struct tryrule));
+
+  /* Number of valid elements in TRYRULES.  */
+  unsigned int nrules;
+
+  /* The index in TRYRULES of the rule we found.  */
+  unsigned int foundrule;
+
+  /* Nonzero if should consider intermediate files as dependencies.  */
+  int intermed_ok;
+
+  /* Nonzero if we have initialized file variables for this target.  */
+  int file_vars_initialized = 0;
+
+  /* Nonzero if we have matched a pattern-rule target
+     that is not just '%'.  */
+  int specific_rule_matched = 0;
+
+  unsigned int ri;  /* uninit checks OK */
+  struct rule *rule;
+
+  char *pathdir = NULL;
+  size_t pathlen;
+
+  PATH_VAR (stem_str); /* @@ Need to get rid of stem, stemlen, etc. */
+
+#ifndef NO_ARCHIVES
+  if (archive || ar_name (filename))
+    lastslash = 0;
+  else
+#endif
+    {
+      /* Set LASTSLASH to point at the last slash in FILENAME
+         but not counting any slash at the end.  (foo/bar/ counts as
+         bar/ in directory foo/, not empty in directory foo/bar/.)  */
+      lastslash = strrchr (filename, '/');
+#ifdef VMS
+      if (lastslash == NULL)
+        lastslash = strrchr (filename, ']');
+      if (lastslash == NULL)
+        lastslash = strrchr (filename, '>');
+      if (lastslash == NULL)
+        lastslash = strrchr (filename, ':');
+#endif
+#ifdef HAVE_DOS_PATHS
+      /* Handle backslashes (possibly mixed with forward slashes)
+         and the case of "d:file".  */
+      {
+        char *bslash = strrchr (filename, '\\');
+        if (lastslash == 0 || bslash > lastslash)
+          lastslash = bslash;
+        if (lastslash == 0 && filename[0] && filename[1] == ':')
+          lastslash = filename + 1;
+      }
+#endif
+      if (lastslash != 0 && lastslash[1] == '\0')
+        lastslash = 0;
+    }
+
+  pathlen = lastslash - filename + 1;
+
+  /* First see which pattern rules match this target and may be considered.
+     Put them in TRYRULES.  */
+
+  nrules = 0;
+  for (rule = pattern_rules; rule != 0; rule = rule->next)
+    {
+      unsigned int ti;
+
+      /* If the pattern rule has deps but no commands, ignore it.
+         Users cancel built-in rules by redefining them without commands.  */
+      if (rule->deps != 0 && rule->cmds == 0)
+        continue;
+
+      /* If this rule is in use by a parent pattern_search,
+         don't use it here.  */
+      if (rule->in_use)
+        {
+          DBS (DB_IMPLICIT, (_("Avoiding implicit rule recursion.\n")));
+          continue;
+        }
+
+      for (ti = 0; ti < rule->num; ++ti)
+        {
+          const char *target = rule->targets[ti];
+          const char *suffix = rule->suffixes[ti];
+          char check_lastslash;
+
+          /* Rules that can match any filename and are not terminal
+             are ignored if we're recursing, so that they cannot be
+             intermediate files.  */
+          if (recursions > 0 && target[1] == '\0' && !rule->terminal)
+            continue;
+
+          if (rule->lens[ti] > namelen)
+            /* It can't possibly match.  */
+            continue;
+
+          /* From the lengths of the filename and the pattern parts,
+             find the stem: the part of the filename that matches the %.  */
+          stem = filename + (suffix - target - 1);
+          stemlen = namelen - rule->lens[ti] + 1;
+
+          /* Set CHECK_LASTSLASH if FILENAME contains a directory
+             prefix and the target pattern does not contain a slash.  */
+
+          check_lastslash = 0;
+          if (lastslash)
+            {
+#ifdef VMS
+              check_lastslash = strpbrk (target, "/]>:") == NULL;
+#else
+              check_lastslash = strchr (target, '/') == 0;
+#endif
+#ifdef HAVE_DOS_PATHS
+              /* Didn't find it yet: check for DOS-type directories.  */
+              if (check_lastslash)
+                {
+                  char *b = strchr (target, '\\');
+                  check_lastslash = !(b || (target[0] && target[1] == ':'));
+                }
+#endif
+            }
+          if (check_lastslash)
+            {
+              /* If so, don't include the directory prefix in STEM here.  */
+              if (pathlen > stemlen)
+                continue;
+              stemlen -= pathlen;
+              stem += pathlen;
+            }
+
+          /* Check that the rule pattern matches the text before the stem.  */
+          if (check_lastslash)
+            {
+              if (stem > (lastslash + 1)
+                  && !strneq (target, lastslash + 1, stem - lastslash - 1))
+                continue;
+            }
+          else if (stem > filename
+                   && !strneq (target, filename, stem - filename))
+            continue;
+
+          /* Check that the rule pattern matches the text after the stem.
+             We could test simply use streq, but this way we compare the
+             first two characters immediately.  This saves time in the very
+             common case where the first character matches because it is a
+             period.  */
+          if (*suffix != stem[stemlen]
+              || (*suffix != '\0' && !streq (&suffix[1], &stem[stemlen + 1])))
+            continue;
+
+          /* Record if we match a rule that not all filenames will match.  */
+          if (target[1] != '\0')
+            specific_rule_matched = 1;
+
+          /* A rule with no dependencies and no commands exists solely to set
+             specific_rule_matched when it matches.  Don't try to use it.  */
+          if (rule->deps == 0 && rule->cmds == 0)
+            continue;
+
+          /* Record this rule in TRYRULES and the index of the matching
+             target in MATCHES.  If several targets of the same rule match,
+             that rule will be in TRYRULES more than once.  */
+          tryrules[nrules].rule = rule;
+          tryrules[nrules].matches = ti;
+          tryrules[nrules].stemlen = stemlen + (check_lastslash ? pathlen : 0);
+          tryrules[nrules].order = nrules;
+          tryrules[nrules].checked_lastslash = check_lastslash;
+          ++nrules;
+        }
+    }
+
+  /* Bail out early if we haven't found any rules. */
+  if (nrules == 0)
+    goto done;
+
+  /* Sort the rules to place matches with the shortest stem first. This
+     way the most specific rules will be tried first. */
+  if (nrules > 1)
+    qsort (tryrules, nrules, sizeof (struct tryrule), stemlen_compare);
+
+  /* If we have found a matching rule that won't match all filenames,
+     retroactively reject any non-"terminal" rules that do always match.  */
+  if (specific_rule_matched)
+    for (ri = 0; ri < nrules; ++ri)
+      if (!tryrules[ri].rule->terminal)
+        {
+          unsigned int j;
+          for (j = 0; j < tryrules[ri].rule->num; ++j)
+            if (tryrules[ri].rule->targets[j][1] == '\0')
+              {
+                tryrules[ri].rule = 0;
+                break;
+              }
+        }
+
+  /* Try each rule once without intermediate files, then once with them.  */
+  for (intermed_ok = 0; intermed_ok < 2; ++intermed_ok)
+    {
+      pat = deplist;
+
+      /* Try each pattern rule till we find one that applies.  If it does,
+         expand its dependencies (as substituted) and chain them in DEPS.  */
+      for (ri = 0; ri < nrules; ri++)
+        {
+          struct dep *dep;
+          char check_lastslash;
+          unsigned int failed = 0;
+          int file_variables_set = 0;
+          unsigned int deps_found = 0;
+          /* NPTR points to the part of the prereq we haven't processed.  */
+          const char *nptr = 0;
+          const char *dir = NULL;
+          int order_only = 0;
+          unsigned int matches;
+
+          rule = tryrules[ri].rule;
+
+          /* RULE is nil when we discover that a rule, already placed in
+             TRYRULES, should not be applied.  */
+          if (rule == 0)
+            continue;
+
+          /* Reject any terminal rules if we're looking to make intermediate
+             files.  */
+          if (intermed_ok && rule->terminal)
+            continue;
+
+          /* From the lengths of the filename and the matching pattern parts,
+             find the stem: the part of the filename that matches the %.  */
+          matches = tryrules[ri].matches;
+          stem = filename + (rule->suffixes[matches]
+                             - rule->targets[matches]) - 1;
+          stemlen = (namelen - rule->lens[matches]) + 1;
+          check_lastslash = tryrules[ri].checked_lastslash;
+          if (check_lastslash)
+            {
+              stem += pathlen;
+              stemlen -= pathlen;
+
+              /* We need to add the directory prefix, so set it up.  */
+              if (! pathdir)
+                {
+                  pathdir = alloca (pathlen + 1);
+                  memcpy (pathdir, filename, pathlen);
+                  pathdir[pathlen] = '\0';
+                }
+              dir = pathdir;
+            }
+
+          if (stemlen > GET_PATH_MAX)
+            {
+              DBS (DB_IMPLICIT, (_("Stem too long: '%.*s'.\n"),
+                                 (int) stemlen, stem));
+              continue;
+            }
+
+          DBS (DB_IMPLICIT, (_("Trying pattern rule with stem '%.*s'.\n"),
+                             (int) stemlen, stem));
+
+          strncpy (stem_str, stem, stemlen);
+          stem_str[stemlen] = '\0';
+
+          /* If there are no prerequisites, then this rule matches.  */
+          if (rule->deps == 0)
+            break;
+
+          /* Temporary assign STEM to file->stem (needed to set file
+             variables below).   */
+          file->stem = stem_str;
+
+          /* Mark this rule as in use so a recursive pattern_search won't try
+             to use it.  */
+          rule->in_use = 1;
+
+          /* Try each prerequisite; see if it exists or can be created.  We'll
+             build a list of prereq info in DEPLIST.  Due to 2nd expansion we
+             may have to process multiple prereqs for a single dep entry.  */
+
+          pat = deplist;
+          dep = rule->deps;
+          nptr = dep_name (dep);
+          while (1)
+            {
+              struct dep *dl, *d;
+              char *p;
+
+              /* If we're out of name to parse, start the next prereq.  */
+              if (! nptr)
+                {
+                  dep = dep->next;
+                  if (dep == 0)
+                    break;
+                  nptr = dep_name (dep);
+                }
+
+              /* If we don't need a second expansion, just replace the %.  */
+              if (! dep->need_2nd_expansion)
+                {
+                  p = strchr (nptr, '%');
+                  if (p == 0)
+                    strcpy (depname, nptr);
+                  else
+                    {
+                      char *o = depname;
+                      if (check_lastslash)
+                        {
+                          memcpy (o, filename, pathlen);
+                          o += pathlen;
+                        }
+                      memcpy (o, nptr, p - nptr);
+                      o += p - nptr;
+                      memcpy (o, stem_str, stemlen);
+                      o += stemlen;
+                      strcpy (o, p + 1);
+                    }
+
+                  /* Parse the expanded string.  It might have wildcards.  */
+                  p = depname;
+                  dl = PARSE_SIMPLE_SEQ (&p, struct dep);
+                  for (d = dl; d != NULL; d = d->next)
+                    {
+                      ++deps_found;
+                      d->ignore_mtime = dep->ignore_mtime;
+                    }
+
+                  /* We've used up this dep, so next time get a new one.  */
+                  nptr = 0;
+                }
+
+              /* We have to perform second expansion on this prereq.  In an
+                 ideal world we would take the dependency line, substitute the
+                 stem, re-expand the whole line and chop it into individual
+                 prerequisites.  Unfortunately this won't work because of the
+                 "check_lastslash" twist.  Instead, we will have to go word by
+                 word, taking $()'s into account.  For each word we will
+                 substitute the stem, re-expand, chop it up, and, if
+                 check_lastslash != 0, add the directory part to each
+                 resulting prerequisite.  */
+              else
+                {
+                  int add_dir = 0;
+                  size_t len;
+                  struct dep **dptr;
+
+                  nptr = get_next_word (nptr, &len);
+                  if (nptr == 0)
+                    continue;
+
+                  /* See this is a transition to order-only prereqs.  */
+                  if (! order_only && len == 1 && nptr[0] == '|')
+                    {
+                      order_only = 1;
+                      nptr += len;
+                      continue;
+                    }
+
+                  /* If the dependency name has %, substitute the stem.  If we
+                     just replace % with the stem value then later, when we do
+                     the 2nd expansion, we will re-expand this stem value
+                     again.  This is not good if you have certain characters
+                     in your stem (like $).
+
+                     Instead, we will replace % with $* and allow the second
+                     expansion to take care of it for us.  This way (since $*
+                     is a simple variable) there won't be additional
+                     re-expansion of the stem.  */
+
+                  p = lindex (nptr, nptr + len, '%');
+                  if (p == 0)
+                    {
+                      memcpy (depname, nptr, len);
+                      depname[len] = '\0';
+                    }
+                  else
+                    {
+                      size_t i = p - nptr;
+                      memcpy (depname, nptr, i);
+                      memcpy (depname + i, "$*", 2);
+                      memcpy (depname + i + 2, p + 1, len - i - 1);
+                      depname[len + 2 - 1] = '\0';
+
+                      if (check_lastslash)
+                        add_dir = 1;
+                    }
+
+                  /* Set up for the next word.  */
+                  nptr += len;
+
+                  /* Initialize and set file variables if we haven't already
+                     done so. */
+                  if (!file_vars_initialized)
+                    {
+                      initialize_file_variables (file, 0);
+                      set_file_variables (file);
+                      file_vars_initialized = 1;
+                    }
+                  /* Update the stem value in $* for this rule.  */
+                  else if (!file_variables_set)
+                    {
+                      define_variable_for_file (
+                        "*", 1, file->stem, o_automatic, 0, file);
+                      file_variables_set = 1;
+                    }
+
+                  /* Perform the 2nd expansion.  */
+                  p = variable_expand_for_file (depname, file);
+                  dptr = &dl;
+
+                  /* Parse the results into a deps list.  */
+                  do
+                    {
+                      /* Parse the expanded string. */
+                      struct dep *dp = PARSE_FILE_SEQ (&p, struct dep,
+                                                       order_only ? MAP_NUL : MAP_PIPE,
+                                                       add_dir ? dir : NULL, PARSEFS_NONE);
+                      *dptr = dp;
+
+                      for (d = dp; d != NULL; d = d->next)
+                        {
+                          ++deps_found;
+                          if (order_only)
+                            d->ignore_mtime = 1;
+                          dptr = &d->next;
+                        }
+
+                      /* If we stopped due to an order-only token, note it.  */
+                      if (*p == '|')
+                        {
+                          order_only = 1;
+                          ++p;
+                        }
+                    }
+                  while (*p != '\0');
+                }
+
+              /* If there are more than max_pattern_deps prerequisites (due to
+                 2nd expansion), reset it and realloc the arrays.  */
+
+              if (deps_found > max_deps)
+                {
+                  size_t l = pat - deplist;
+                  /* This might have changed due to recursion.  */
+                  max_pattern_deps = MAX(max_pattern_deps, deps_found);
+                  max_deps = max_pattern_deps;
+                  deplist = xrealloc (deplist,
+                                      max_deps * sizeof (struct patdeps));
+                  pat = deplist + l;
+                }
+
+              /* Go through the nameseq and handle each as a prereq name.  */
+              for (d = dl; d != 0; d = d->next)
+                {
+                  struct dep *expl_d;
+                  int is_rule = d->name == dep_name (dep);
+
+                  if (file_impossible_p (d->name))
+                    {
+                      /* If this prereq has already been ruled "impossible",
+                         then the rule fails.  Don't bother trying it on the
+                         second pass either since we know that will fail.  */
+                      DBS (DB_IMPLICIT,
+                           (is_rule
+                            ? _("Rejecting impossible rule prerequisite '%s'.\n")
+                            : _("Rejecting impossible implicit prerequisite '%s'.\n"),
+                            d->name));
+                      tryrules[ri].rule = 0;
+
+                      failed = 1;
+                      break;
+                    }
+
+                  memset (pat, '\0', sizeof (struct patdeps));
+                  pat->ignore_mtime = d->ignore_mtime;
+
+                  DBS (DB_IMPLICIT,
+                       (is_rule
+                        ? _("Trying rule prerequisite '%s'.\n")
+                        : _("Trying implicit prerequisite '%s'.\n"), d->name));
+
+                  /* If this prereq is also explicitly mentioned for FILE,
+                     skip all tests below since it must be built no matter
+                     which implicit rule we choose. */
+
+                  for (expl_d = file->deps; expl_d != 0; expl_d = expl_d->next)
+                    if (streq (dep_name (expl_d), d->name))
+                      break;
+                  if (expl_d != 0)
+                    {
+                      (pat++)->name = d->name;
+                      continue;
+                    }
+
+                  /* The DEP->changed flag says that this dependency resides
+                     in a nonexistent directory.  So we normally can skip
+                     looking for the file.  However, if CHECK_LASTSLASH is
+                     set, then the dependency file we are actually looking for
+                     is in a different directory (the one gotten by prepending
+                     FILENAME's directory), so it might actually exist.  */
+
+                  /* @@ dep->changed check is disabled. */
+                  if (lookup_file (d->name) != 0
+                      /*|| ((!dep->changed || check_lastslash) && */
+                      || file_exists_p (d->name))
+                    {
+                      (pat++)->name = d->name;
+                      continue;
+                    }
+
+                  /* This code, given FILENAME = "lib/foo.o", dependency name
+                     "lib/foo.c", and VPATH=src, searches for
+                     "src/lib/foo.c".  */
+                  {
+                    const char *vname = vpath_search (d->name, 0, NULL, NULL);
+                    if (vname)
+                      {
+                        DBS (DB_IMPLICIT,
+                             (_("Found prerequisite '%s' as VPATH '%s'\n"),
+                              d->name, vname));
+                        (pat++)->name = d->name;
+                        continue;
+                      }
+                  }
+
+                  /* We could not find the file in any place we should look.
+                     Try to make this dependency as an intermediate file, but
+                     only on the second pass.  */
+
+                  if (intermed_ok)
+                    {
+                      DBS (DB_IMPLICIT,
+                           (_("Looking for a rule with intermediate file '%s'.\n"),
+                            d->name));
+
+                      if (int_file == 0)
+                        int_file = alloca (sizeof (struct file));
+                      memset (int_file, '\0', sizeof (struct file));
+                      int_file->name = d->name;
+
+                      if (pattern_search (int_file,
+                                          0,
+                                          depth + 1,
+                                          recursions + 1))
+                        {
+                          pat->pattern = int_file->name;
+                          int_file->name = d->name;
+                          pat->file = int_file;
+                          int_file = 0;
+                          (pat++)->name = d->name;
+                          continue;
+                        }
+
+                      /* If we have tried to find P as an intermediate file
+                         and failed, mark that name as impossible so we won't
+                         go through the search again later.  */
+                      if (int_file->variables)
+                        free_variable_set (int_file->variables);
+                      if (int_file->pat_variables)
+                        free_variable_set (int_file->pat_variables);
+                      file_impossible (d->name);
+                    }
+
+                  /* A dependency of this rule does not exist. Therefore, this
+                     rule fails.  */
+                  failed = 1;
+                  break;
+                }
+
+              /* Free the ns chain.  */
+              free_dep_chain (dl);
+
+              if (failed)
+                break;
+            }
+
+          /* Reset the stem in FILE. */
+
+          file->stem = 0;
+
+          /* This rule is no longer 'in use' for recursive searches.  */
+          rule->in_use = 0;
+
+          if (! failed)
+            /* This pattern rule does apply.  Stop looking for one.  */
+            break;
+
+          /* This pattern rule does not apply.  Keep looking.  */
+        }
+
+      /* If we found an applicable rule without intermediate files, don't try
+         with them.  */
+      if (ri < nrules)
+        break;
+
+      rule = 0;
+    }
+
+  /* RULE is nil if the loop went through the list but everything failed.  */
+  if (rule == 0)
+    goto done;
+
+  foundrule = ri;
+
+  /* If we are recursing, store the pattern that matched FILENAME in
+     FILE->name for use in upper levels.  */
+
+  if (recursions > 0)
+    /* Kludge-o-matic */
+    file->name = rule->targets[tryrules[foundrule].matches];
+
+  /* DEPLIST lists the prerequisites for the rule we found.  This includes the
+     intermediate files, if any.  Convert them into entries on the deps-chain
+     of FILE.  */
+
+  while (pat-- > deplist)
+    {
+      struct dep *dep;
+      const char *s;
+
+      if (pat->file != 0)
+        {
+          /* If we need to use an intermediate file, make sure it is entered
+             as a target, with the info that was found for it in the recursive
+             pattern_search call.  We know that the intermediate file did not
+             already exist as a target; therefore we can assume that the deps
+             and cmds of F below are null before we change them.  */
+
+          struct file *imf = pat->file;
+          struct file *f = lookup_file (imf->name);
+
+          /* We don't want to delete an intermediate file that happened
+             to be a prerequisite of some (other) target. Mark it as
+             secondary.  We don't want it to be precious as that disables
+             DELETE_ON_ERROR etc.  */
+          if (f != 0)
+            f->secondary = 1;
+          else
+            f = enter_file (imf->name);
+
+          f->deps = imf->deps;
+          f->cmds = imf->cmds;
+          f->stem = imf->stem;
+          f->variables = imf->variables;
+          f->pat_variables = imf->pat_variables;
+          f->pat_searched = imf->pat_searched;
+          f->also_make = imf->also_make;
+          f->is_target = 1;
+          f->intermediate = 1;
+          f->tried_implicit = 1;
+
+          imf = lookup_file (pat->pattern);
+          if (imf != 0 && imf->precious)
+            f->precious = 1;
+
+          for (dep = f->deps; dep != 0; dep = dep->next)
+            {
+              dep->file = enter_file (dep->name);
+              dep->name = 0;
+              dep->file->tried_implicit |= dep->changed;
+            }
+        }
+
+      dep = alloc_dep ();
+      dep->ignore_mtime = pat->ignore_mtime;
+      s = strcache_add (pat->name);
+      if (recursions)
+        dep->name = s;
+      else
+        {
+          dep->file = lookup_file (s);
+          if (dep->file == 0)
+            dep->file = enter_file (s);
+        }
+
+      if (pat->file == 0 && tryrules[foundrule].rule->terminal)
+        {
+          /* If the file actually existed (was not an intermediate file), and
+             the rule that found it was a terminal one, then we want to mark
+             the found file so that it will not have implicit rule search done
+             for it.  If we are not entering a 'struct file' for it now, we
+             indicate this with the 'changed' flag.  */
+          if (dep->file == 0)
+            dep->changed = 1;
+          else
+            dep->file->tried_implicit = 1;
+        }
+
+      dep->next = file->deps;
+      file->deps = dep;
+    }
+
+  if (!tryrules[foundrule].checked_lastslash)
+    {
+      /* Always allocate new storage, since STEM might be on the stack for an
+         intermediate file.  */
+      file->stem = strcache_add_len (stem, stemlen);
+      fullstemlen = stemlen;
+    }
+  else
+    {
+      size_t dirlen = (lastslash + 1) - filename;
+      char *sp;
+
+      /* We want to prepend the directory from
+         the original FILENAME onto the stem.  */
+      fullstemlen = dirlen + stemlen;
+      sp = alloca (fullstemlen + 1);
+      memcpy (sp, filename, dirlen);
+      memcpy (sp + dirlen, stem, stemlen);
+      sp[fullstemlen] = '\0';
+      file->stem = strcache_add (sp);
+    }
+
+  file->cmds = rule->cmds;
+  file->is_target = 1;
+
+  /* Set precious flag. */
+  {
+    struct file *f = lookup_file (rule->targets[tryrules[foundrule].matches]);
+    if (f && f->precious)
+      file->precious = 1;
+  }
+
+  /* If this rule builds other targets, too, put the others into FILE's
+     'also_make' member.  */
+
+  if (rule->num > 1)
+    for (ri = 0; ri < rule->num; ++ri)
+      if (ri != tryrules[foundrule].matches)
+        {
+          char *nm = alloca (rule->lens[ri] + fullstemlen + 1);
+          char *p = nm;
+          struct file *f;
+          struct dep *new = alloc_dep ();
+
+          /* GKM FIMXE: handle '|' here too */
+          memcpy (p, rule->targets[ri],
+                  rule->suffixes[ri] - rule->targets[ri] - 1);
+          p += rule->suffixes[ri] - rule->targets[ri] - 1;
+          memcpy (p, file->stem, fullstemlen);
+          p += fullstemlen;
+          memcpy (p, rule->suffixes[ri],
+                  rule->lens[ri] - (rule->suffixes[ri] - rule->targets[ri])+1);
+          new->name = strcache_add (nm);
+          new->file = enter_file (new->name);
+          new->next = file->also_make;
+
+          /* Set precious flag. */
+          f = lookup_file (rule->targets[ri]);
+          if (f && f->precious)
+            new->file->precious = 1;
+
+          /* Set the is_target flag so that this file is not treated as
+             intermediate by the pattern rule search algorithm and
+             file_exists_p cannot pick it up yet.  */
+          new->file->is_target = 1;
+
+          file->also_make = new;
+        }
+
+ done:
+  free (tryrules);
+  free (deplist);
+
+  return rule != 0;
+}

src/job.h

@@ -0,0 +1,83 @@
+/* Definitions for managing subprocesses in GNU Make.
+Copyright (C) 1992-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "output.h"
+
+/* Structure describing a running or dead child process.  */
+
+struct child
+  {
+    struct child *next;         /* Link in the chain.  */
+
+    struct file *file;          /* File being remade.  */
+
+    char **environment;         /* Environment for commands.  */
+
+    char *sh_batch_file;        /* Script file for shell commands */
+    char **command_lines;       /* Array of variable-expanded cmd lines.  */
+    char *command_ptr;          /* Ptr into command_lines[command_line].  */
+
+    struct output output;       /* Output for this child.  */
+
+#ifdef VMS
+    char *comname;              /* Temporary command file name */
+    int efn;                    /* Completion event flag number */
+    int cstatus;                /* Completion status */
+    int vms_launch_status;      /* non-zero if lib$spawn, etc failed */
+#endif
+
+    unsigned int  command_line; /* Index into command_lines.  */
+
+    pid_t         pid;          /* Child process's ID number.  */
+    unsigned int  remote:1;     /* Nonzero if executing remotely.  */
+    unsigned int  noerror:1;    /* Nonzero if commands contained a '-'.  */
+    unsigned int  good_stdin:1; /* Nonzero if this child has a good stdin.  */
+    unsigned int  deleted:1;    /* Nonzero if targets have been deleted.  */
+    unsigned int  recursive:1;  /* Nonzero for recursive command ('+' etc.)  */
+    unsigned int  dontcare:1;   /* Saved dontcare flag.  */
+  };
+
+extern struct child *children;
+
+/* A signal handler for SIGCHLD, if needed.  */
+RETSIGTYPE child_handler (int sig);
+int is_bourne_compatible_shell(const char *path);
+void new_job (struct file *file);
+void reap_children (int block, int err);
+void start_waiting_jobs (void);
+
+char **construct_command_argv (char *line, char **restp, struct file *file,
+                               int cmd_flags, char** batch_file);
+
+#ifdef VMS
+int child_execute_job (struct child *child, char *argv);
+#else
+pid_t child_execute_job (struct output *out, int good_stdin,
+                         char **argv, char **envp);
+#endif
+
+#ifdef _AMIGA
+void exec_command (char **argv) __attribute__ ((noreturn));
+#elif defined(__EMX__)
+int exec_command (char **argv, char **envp);
+#else
+void exec_command (char **argv, char **envp) __attribute__ ((noreturn));
+#endif
+
+void unblock_all_sigs (void);
+
+extern unsigned int job_slots_used;
+extern unsigned int jobserver_tokens;

src/load.c

@@ -0,0 +1,267 @@
+/* Loading dynamic objects for GNU Make.
+Copyright (C) 2012-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#if MAKE_LOAD
+
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <dlfcn.h>
+#include <errno.h>
+
+#define SYMBOL_EXTENSION        "_gmk_setup"
+
+#include "debug.h"
+#include "filedef.h"
+#include "variable.h"
+
+/* Tru64 V4.0 does not have this flag */
+#ifndef RTLD_GLOBAL
+# define RTLD_GLOBAL 0
+#endif
+
+struct load_list
+  {
+    struct load_list *next;
+    const char *name;
+    void *dlp;
+  };
+
+static struct load_list *loaded_syms = NULL;
+
+static load_func_t
+load_object (const floc *flocp, int noerror, const char *ldname,
+             const char *symname)
+{
+  static void *global_dl = NULL;
+  load_func_t symp;
+
+  if (! global_dl)
+    {
+      global_dl = dlopen (NULL, RTLD_NOW|RTLD_GLOBAL);
+      if (! global_dl)
+        {
+          const char *err = dlerror ();
+          OS (fatal, flocp, _("Failed to open global symbol table: %s"), err);
+        }
+    }
+
+  symp = (load_func_t) dlsym (global_dl, symname);
+  if (! symp)
+    {
+      struct load_list *new;
+      void *dlp = NULL;
+
+    /* If the path has no "/", try the current directory first.  */
+      if (! strchr (ldname, '/')
+#ifdef HAVE_DOS_PATHS
+          && ! strchr (ldname, '\\')
+#endif
+         )
+        dlp = dlopen (concat (2, "./", ldname), RTLD_LAZY|RTLD_GLOBAL);
+
+      /* If we haven't opened it yet, try the default search path.  */
+      if (! dlp)
+        dlp = dlopen (ldname, RTLD_LAZY|RTLD_GLOBAL);
+
+      /* Still no?  Then fail.  */
+      if (! dlp)
+        {
+          const char *err = dlerror ();
+          if (noerror)
+            DB (DB_BASIC, ("%s", err));
+          else
+            OS (error, flocp, "%s", err);
+          return NULL;
+        }
+
+      /* Assert that the GPL license symbol is defined.  */
+      symp = (load_func_t) dlsym (dlp, "plugin_is_GPL_compatible");
+      if (! symp)
+        OS (fatal, flocp,
+             _("Loaded object %s is not declared to be GPL compatible"),
+             ldname);
+
+      symp = (load_func_t) dlsym (dlp, symname);
+      if (! symp)
+        {
+          const char *err = dlerror ();
+          OSSS (fatal, flocp, _("Failed to load symbol %s from %s: %s"),
+                symname, ldname, err);
+        }
+
+      /* Add this symbol to a trivial lookup table.  This is not efficient but
+         it's highly unlikely we'll be loading lots of objects, and we only
+         need it to look them up on unload, if we rebuild them.  */
+      new = xmalloc (sizeof (struct load_list));
+      new->name = xstrdup (ldname);
+      new->dlp = dlp;
+      new->next = loaded_syms;
+      loaded_syms = new;
+    }
+
+  return symp;
+}
+
+int
+load_file (const floc *flocp, const char **ldname, int noerror)
+{
+  size_t nmlen = strlen (*ldname);
+  char *new = alloca (nmlen + CSTRLEN (SYMBOL_EXTENSION) + 1);
+  char *symname = NULL;
+  char *loaded;
+  const char *fp;
+  int r;
+  load_func_t symp;
+
+  /* Break the input into an object file name and a symbol name.  If no symbol
+     name was provided, compute one from the object file name.  */
+  fp = strchr (*ldname, '(');
+  if (fp)
+    {
+      const char *ep;
+
+      /* There's an open paren, so see if there's a close paren: if so use
+         that as the symbol name.  We can't have whitespace: it would have
+         been chopped up before this function is called.  */
+      ep = strchr (fp+1, ')');
+      if (ep && ep[1] == '\0')
+        {
+          size_t l = fp - *ldname;;
+
+          ++fp;
+          if (fp == ep)
+            OS (fatal, flocp, _("Empty symbol name for load: %s"), *ldname);
+
+          /* Make a copy of the ldname part.  */
+          memcpy (new, *ldname, l);
+          new[l] = '\0';
+          *ldname = new;
+          nmlen = l;
+
+          /* Make a copy of the symbol name part.  */
+          symname = new + l + 1;
+          memcpy (symname, fp, ep - fp);
+          symname[ep - fp] = '\0';
+        }
+    }
+
+  /* Add this name to the string cache so it can be reused later.  */
+  *ldname = strcache_add (*ldname);
+
+  /* If this object has been loaded, we're done.  */
+  loaded = allocated_variable_expand ("$(.LOADED)");
+  fp = strstr (loaded, *ldname);
+  r = fp && (fp==loaded || fp[-1]==' ') && (fp[nmlen]=='\0' || fp[nmlen]==' ');
+  if (r)
+    goto exit;
+
+  /* If we didn't find a symbol name yet, construct it from the ldname.  */
+  if (! symname)
+    {
+      char *p = new;
+
+      fp = strrchr (*ldname, '/');
+#ifdef HAVE_DOS_PATHS
+      if (fp)
+        {
+          const char *fp2 = strchr (fp, '\\');
+
+          if (fp2 > fp)
+            fp = fp2;
+        }
+      else
+        fp = strrchr (*ldname, '\\');
+      /* The (improbable) case of d:foo.  */
+      if (fp && *fp && fp[1] == ':')
+        fp++;
+#endif
+      if (!fp)
+        fp = *ldname;
+      else
+        ++fp;
+      while (isalnum (*fp) || *fp == '_')
+        *(p++) = *(fp++);
+      strcpy (p, SYMBOL_EXTENSION);
+      symname = new;
+    }
+
+  DB (DB_VERBOSE, (_("Loading symbol %s from %s\n"), symname, *ldname));
+
+  /* Load it!  */
+  symp = load_object (flocp, noerror, *ldname, symname);
+  if (! symp)
+    return 0;
+
+  /* Invoke the symbol.  */
+  r = (*symp) (flocp);
+
+  /* If it succeeded, add the load file to the loaded variable.  */
+  if (r > 0)
+    {
+      size_t loadlen = strlen (loaded);
+      char *newval = alloca (loadlen + strlen (*ldname) + 2);
+      /* Don't add a space if it's empty.  */
+      if (loadlen)
+        {
+          memcpy (newval, loaded, loadlen);
+          newval[loadlen++] = ' ';
+        }
+      strcpy (&newval[loadlen], *ldname);
+      do_variable_definition (flocp, ".LOADED", newval, o_default, f_simple, 0);
+    }
+
+ exit:
+  free (loaded);
+  return r;
+}
+
+void
+unload_file (const char *name)
+{
+  struct load_list *d;
+
+  for (d = loaded_syms; d != NULL; d = d->next)
+    if (streq (d->name, name) && d->dlp)
+      {
+        if (dlclose (d->dlp))
+          perror_with_name ("dlclose: ", d->name);
+        d->dlp = NULL;
+        break;
+      }
+}
+
+#else
+
+int
+load_file (const floc *flocp, const char **ldname UNUSED, int noerror)
+{
+  if (! noerror)
+    O (fatal, flocp,
+       _("The 'load' operation is not supported on this platform."));
+
+  return 0;
+}
+
+void
+unload_file (const char *name UNUSED)
+{
+  O (fatal, NILF, "INTERNAL: Cannot unload when load is not supported!");
+}
+
+#endif  /* MAKE_LOAD */

src/loadapi.c

@@ -0,0 +1,82 @@
+/* API for GNU Make dynamic objects.
+Copyright (C) 2013-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include "filedef.h"
+#include "variable.h"
+#include "dep.h"
+
+/* Allocate a buffer in our context, so we can free it.  */
+char *
+gmk_alloc (unsigned int len)
+{
+  return xmalloc (len);
+}
+
+/* Free a buffer returned by gmk_expand().  */
+void
+gmk_free (char *s)
+{
+  free (s);
+}
+
+/* Evaluate a buffer as make syntax.
+   Ideally eval_buffer() will take const char *, but not yet.  */
+void
+gmk_eval (const char *buffer, const gmk_floc *gfloc)
+{
+  /* Preserve existing variable buffer context.  */
+  char *pbuf;
+  size_t plen;
+  char *s;
+  floc fl;
+  floc *flp;
+
+  if (gfloc)
+    {
+      fl.filenm = gfloc->filenm;
+      fl.lineno = gfloc->lineno;
+      fl.offset = 0;
+      flp = &fl;
+    }
+  else
+    flp = NULL;
+
+  install_variable_buffer (&pbuf, &plen);
+
+  s = xstrdup (buffer);
+  eval_buffer (s, flp);
+  free (s);
+
+  restore_variable_buffer (pbuf, plen);
+}
+
+/* Expand a string and return an allocated buffer.
+   Caller must call gmk_free() with this buffer.  */
+char *
+gmk_expand (const char *ref)
+{
+  return allocated_variable_expand (ref);
+}
+
+/* Register a function to be called from makefiles.  */
+void
+gmk_add_function (const char *name, gmk_func_ptr func,
+                  unsigned int min, unsigned int max, unsigned int flags)
+{
+  define_new_function (reading_file, name, min, max, flags, func);
+}

src/makeint.h

@@ -0,0 +1,803 @@
+/* Miscellaneous global declarations and portability cruft for GNU Make.
+Copyright (C) 1988-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* We use <config.h> instead of "config.h" so that a compilation
+   using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
+   (which it would do because makeint.h was found in $srcdir).  */
+#include <config.h>
+#undef  HAVE_CONFIG_H
+#define HAVE_CONFIG_H 1
+
+/* Specify we want GNU source code.  This must be defined before any
+   system headers are included.  */
+
+#define _GNU_SOURCE 1
+
+/* AIX requires this to be the first thing in the file.  */
+#if HAVE_ALLOCA_H
+# include <alloca.h>
+#else
+# ifdef _AIX
+ #pragma alloca
+# else
+#  if !defined(__GNUC__) && !defined(WINDOWS32)
+#   ifndef alloca /* predefined by HP cc +Olibcalls */
+char *alloca ();
+#   endif
+#  endif
+# endif
+#endif
+
+/* Disable assert() unless we're a maintainer.
+   Some asserts are compute-intensive.  */
+#ifndef MAKE_MAINTAINER_MODE
+# define NDEBUG 1
+#endif
+
+/* Include the externally-visible content.
+   Be sure to use the local one, and not one installed on the system.
+   Define GMK_BUILDING_MAKE for proper selection of dllexport/dllimport
+   declarations for MS-Windows.  */
+#ifdef WINDOWS32
+# define GMK_BUILDING_MAKE
+#endif
+#include "gnumake.h"
+
+#ifdef  CRAY
+/* This must happen before #include <signal.h> so
+   that the declaration therein is changed.  */
+# define signal bsdsignal
+#endif
+
+/* If we're compiling for the dmalloc debugger, turn off string inlining.  */
+#if defined(HAVE_DMALLOC_H) && defined(__GNUC__)
+# define __NO_STRING_INLINES
+#endif
+
+#include <stddef.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <signal.h>
+#include <stdio.h>
+#include <ctype.h>
+
+#ifdef HAVE_SYS_TIMEB_H
+/* SCO 3.2 "devsys 4.2" has a prototype for 'ftime' in <time.h> that bombs
+   unless <sys/timeb.h> has been included first.  */
+# include <sys/timeb.h>
+#endif
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  include <time.h>
+# endif
+#endif
+
+#include <errno.h>
+
+#ifndef errno
+extern int errno;
+#endif
+
+#ifdef __VMS
+/* In strict ANSI mode, VMS compilers should not be defining the
+   VMS macro.  Define it here instead of a bulk edit for the correct code.
+ */
+# ifndef VMS
+#  define VMS
+# endif
+#endif
+
+#ifdef  HAVE_UNISTD_H
+# include <unistd.h>
+/* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get
+   POSIX.1 behavior with 'cc -YPOSIX', which predefines POSIX itself!  */
+# if defined (_POSIX_VERSION) && !defined (ultrix) && !defined (VMS)
+#  define POSIX 1
+# endif
+#endif
+
+/* Some systems define _POSIX_VERSION but are not really POSIX.1.  */
+#if (defined (butterfly) || defined (__arm) || (defined (__mips) && defined (_SYSTYPE_SVR3)) || (defined (sequent) && defined (i386)))
+# undef POSIX
+#endif
+
+#if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
+# define POSIX 1
+#endif
+
+#ifndef RETSIGTYPE
+# define RETSIGTYPE     void
+#endif
+
+#ifndef sigmask
+# define sigmask(sig)   (1 << ((sig) - 1))
+#endif
+
+#ifndef HAVE_SA_RESTART
+# define SA_RESTART 0
+#endif
+
+#ifdef HAVE_VFORK_H
+# include <vfork.h>
+#endif
+
+#ifdef  HAVE_LIMITS_H
+# include <limits.h>
+#endif
+#ifdef  HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+
+#ifndef PATH_MAX
+# ifndef POSIX
+#  define PATH_MAX      MAXPATHLEN
+# endif
+#endif
+#ifndef MAXPATHLEN
+# define MAXPATHLEN 1024
+#endif
+
+#ifdef  PATH_MAX
+# define GET_PATH_MAX   PATH_MAX
+# define PATH_VAR(var)  char var[PATH_MAX+1]
+#else
+# define NEED_GET_PATH_MAX 1
+# define GET_PATH_MAX   (get_path_max ())
+# define PATH_VAR(var)  char *var = alloca (GET_PATH_MAX+1)
+unsigned int get_path_max (void);
+#endif
+
+#ifndef CHAR_BIT
+# define CHAR_BIT 8
+#endif
+
+#ifndef USHRT_MAX
+# define USHRT_MAX 65535
+#endif
+
+/* Nonzero if the integer type T is signed.
+   Use <= to avoid GCC warnings about always-false expressions.  */
+#define INTEGER_TYPE_SIGNED(t) ((t) -1 <= 0)
+
+/* The minimum and maximum values for the integer type T.
+   Use ~ (t) 0, not -1, for portability to 1's complement hosts.  */
+#define INTEGER_TYPE_MINIMUM(t) \
+  (! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))
+#define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t))
+
+#ifndef CHAR_MAX
+# define CHAR_MAX INTEGER_TYPE_MAXIMUM (char)
+#endif
+
+#ifdef STAT_MACROS_BROKEN
+# ifdef S_ISREG
+#  undef S_ISREG
+# endif
+# ifdef S_ISDIR
+#  undef S_ISDIR
+# endif
+#endif  /* STAT_MACROS_BROKEN.  */
+
+#ifndef S_ISREG
+# define S_ISREG(mode)  (((mode) & S_IFMT) == S_IFREG)
+#endif
+#ifndef S_ISDIR
+# define S_ISDIR(mode)  (((mode) & S_IFMT) == S_IFDIR)
+#endif
+
+#ifdef VMS
+# include <fcntl.h>
+# include <types.h>
+# include <unixlib.h>
+# include <unixio.h>
+# include <perror.h>
+/* Needed to use alloca on VMS.  */
+# include <builtins.h>
+
+extern int vms_use_mcr_command;
+extern int vms_always_use_cmd_file;
+extern int vms_gnv_shell;
+extern int vms_comma_separator;
+extern int vms_legacy_behavior;
+extern int vms_unix_simulation;
+#endif
+
+#ifndef __attribute__
+/* This feature is available in gcc versions 2.5 and later.  */
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
+#  define __attribute__(x)
+# endif
+/* The __-protected variants of 'format' and 'printf' attributes
+   are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
+#  define __format__ format
+#  define __printf__ printf
+# endif
+#endif
+#define UNUSED  __attribute__ ((unused))
+
+#if defined (STDC_HEADERS) || defined (__GNU_LIBRARY__)
+# include <stdlib.h>
+# include <string.h>
+# define ANSI_STRING 1
+#else   /* No standard headers.  */
+# ifdef HAVE_STRING_H
+#  include <string.h>
+#  define ANSI_STRING 1
+# else
+#  include <strings.h>
+# endif
+# ifdef HAVE_MEMORY_H
+#  include <memory.h>
+# endif
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# else
+void *malloc (int);
+void *realloc (void *, int);
+void free (void *);
+
+void abort (void) __attribute__ ((noreturn));
+void exit (int) __attribute__ ((noreturn));
+# endif /* HAVE_STDLIB_H.  */
+
+#endif /* Standard headers.  */
+
+/* These should be in stdlib.h.  Make sure we have them.  */
+#ifndef EXIT_SUCCESS
+# define EXIT_SUCCESS 0
+#endif
+#ifndef EXIT_FAILURE
+# define EXIT_FAILURE 1
+#endif
+
+#ifndef  ANSI_STRING
+
+/* SCO Xenix has a buggy macro definition in <string.h>.  */
+#undef  strerror
+#if !defined(__DECC)
+char *strerror (int errnum);
+#endif
+
+#endif  /* !ANSI_STRING.  */
+#undef  ANSI_STRING
+
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+#if HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#define FILE_TIMESTAMP uintmax_t
+
+#if !defined(HAVE_STRSIGNAL)
+char *strsignal (int signum);
+#endif
+
+#if defined(HAVE_UMASK)
+# define UMASK(_m)  umask (_m)
+# define MODE_T     mode_t
+#else
+# define UMASK(_m)  0
+# define MODE_T     int
+#endif
+
+/* ISDIGIT offers the following features:
+   - Its arg may be any int or unsigned int; it need not be an unsigned char.
+   - It's guaranteed to evaluate its argument exactly once.
+      NOTE!  Make relies on this behavior, don't change it!
+   - It's typically faster.
+   POSIX 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
+   only '0' through '9' are digits.  Prefer ISDIGIT to isdigit() unless
+   it's important to use the locale's definition of 'digit' even when the
+   host does not conform to POSIX.  */
+#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
+
+/* Test if two strings are equal. Is this worthwhile?  Should be profiled.  */
+#define streq(a, b) \
+   ((a) == (b) || \
+    (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1))))
+
+/* Test if two strings are equal, but match case-insensitively on systems
+   which have case-insensitive filesystems.  Should only be used for
+   filenames!  */
+#ifdef HAVE_CASE_INSENSITIVE_FS
+# define patheq(a, b) \
+    ((a) == (b) \
+     || (tolower((unsigned char)*(a)) == tolower((unsigned char)*(b)) \
+         && (*(a) == '\0' || !strcasecmp ((a) + 1, (b) + 1))))
+#else
+# define patheq(a, b) streq(a, b)
+#endif
+
+#define strneq(a, b, l) (strncmp ((a), (b), (l)) == 0)
+
+#if defined(__GNUC__) || defined(ENUM_BITFIELDS)
+# define ENUM_BITFIELD(bits)    :bits
+#else
+# define ENUM_BITFIELD(bits)
+#endif
+
+/* Handle gettext and locales.  */
+
+#if HAVE_LOCALE_H
+# include <locale.h>
+#else
+# define setlocale(category, locale)
+#endif
+
+#include <gettext.h>
+
+#define _(msgid)            gettext (msgid)
+#define N_(msgid)           gettext_noop (msgid)
+#define S_(msg1,msg2,num)   ngettext (msg1,msg2,num)
+
+/* This is needed for getcwd() and chdir(), on some W32 systems.  */
+#if defined(HAVE_DIRECT_H)
+# include <direct.h>
+#endif
+
+#ifdef WINDOWS32
+# include <fcntl.h>
+# include <malloc.h>
+# define pipe(_p)        _pipe((_p), 512, O_BINARY)
+# define kill(_pid,_sig) w32_kill((_pid),(_sig))
+/* MSVC and Watcom C don't have ftruncate.  */
+# if defined(_MSC_VER) || defined(__WATCOMC__)
+#  define ftruncate(_fd,_len) _chsize(_fd,_len)
+# endif
+/* MinGW64 doesn't have _S_ISDIR.  */
+# ifndef _S_ISDIR
+#  define _S_ISDIR(m)  S_ISDIR(m)
+# endif
+
+void sync_Path_environment (void);
+int w32_kill (pid_t pid, int sig);
+int find_and_set_default_shell (const char *token);
+
+/* indicates whether or not we have Bourne shell */
+extern int no_default_sh_exe;
+
+/* is default_shell unixy? */
+extern int unixy_shell;
+
+/* We don't have a preferred fixed value for LOCALEDIR.  */
+# ifndef LOCALEDIR
+#  define LOCALEDIR NULL
+# endif
+
+/* Include only the minimal stuff from windows.h.   */
+# define WIN32_LEAN_AND_MEAN
+#endif  /* WINDOWS32 */
+
+#define ANY_SET(_v,_m)  (((_v)&(_m)) != 0)
+#define NONE_SET(_v,_m) (! ANY_SET ((_v),(_m)))
+
+#define MAP_NUL         0x0001
+#define MAP_BLANK       0x0002
+#define MAP_NEWLINE     0x0004
+#define MAP_COMMENT     0x0008
+#define MAP_SEMI        0x0010
+#define MAP_EQUALS      0x0020
+#define MAP_COLON       0x0040
+#define MAP_VARSEP      0x0080
+#define MAP_PIPE        0x0100
+#define MAP_DOT         0x0200
+#define MAP_COMMA       0x0400
+
+/* These are the valid characters for a user-defined function.  */
+#define MAP_USERFUNC    0x2000
+/* This means not only a '$', but skip the variable reference.  */
+#define MAP_VARIABLE    0x4000
+/* The set of characters which are directory separators is OS-specific.  */
+#define MAP_DIRSEP      0x8000
+
+#ifdef VMS
+# define MAP_VMSCOMMA   MAP_COMMA
+#else
+# define MAP_VMSCOMMA   0x0000
+#endif
+
+#define MAP_SPACE       (MAP_BLANK|MAP_NEWLINE)
+
+/* Handle other OSs.
+   To overcome an issue parsing paths in a DOS/Windows environment when
+   built in a unix based environment, override the PATH_SEPARATOR_CHAR
+   definition unless being built for Cygwin. */
+#if defined(HAVE_DOS_PATHS) && !defined(__CYGWIN__)
+# undef PATH_SEPARATOR_CHAR
+# define PATH_SEPARATOR_CHAR ';'
+# define MAP_PATHSEP    MAP_SEMI
+#elif !defined(PATH_SEPARATOR_CHAR)
+# if defined (VMS)
+#  define PATH_SEPARATOR_CHAR (vms_comma_separator ? ',' : ':')
+#  define MAP_PATHSEP    (vms_comma_separator ? MAP_COMMA : MAP_SEMI)
+# else
+#  define PATH_SEPARATOR_CHAR ':'
+#  define MAP_PATHSEP    MAP_COLON
+# endif
+#elif PATH_SEPARATOR_CHAR == ':'
+# define MAP_PATHSEP     MAP_COLON
+#elif PATH_SEPARATOR_CHAR == ';'
+# define MAP_PATHSEP     MAP_SEMI
+#elif PATH_SEPARATOR_CHAR == ','
+# define MAP_PATHSEP     MAP_COMMA
+#else
+# error "Unknown PATH_SEPARATOR_CHAR"
+#endif
+
+#define STOP_SET(_v,_m) ANY_SET(stopchar_map[(unsigned char)(_v)],(_m))
+
+#define ISBLANK(c)      STOP_SET((c),MAP_BLANK)
+#define ISSPACE(c)      STOP_SET((c),MAP_SPACE)
+#define NEXT_TOKEN(s)   while (ISSPACE (*(s))) ++(s)
+#define END_OF_TOKEN(s) while (! STOP_SET (*(s), MAP_SPACE|MAP_NUL)) ++(s)
+
+#if defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT) && defined(HAVE_SETRLIMIT)
+# define SET_STACK_SIZE
+#endif
+#ifdef SET_STACK_SIZE
+# include <sys/resource.h>
+extern struct rlimit stack_limit;
+#endif
+
+#include <glob.h>
+
+#define NILF ((floc *)0)
+
+#define CSTRLEN(_s)           (sizeof (_s)-1)
+#define STRING_SIZE_TUPLE(_s) (_s), CSTRLEN(_s)
+
+/* The number of bytes needed to represent the largest integer as a string.  */
+#define INTSTR_LENGTH         CSTRLEN ("18446744073709551616")
+
+#define DEFAULT_TTYNAME "true"
+#ifdef HAVE_TTYNAME
+# define TTYNAME(_f) ttyname (_f)
+#else
+# define TTYNAME(_f) DEFAULT_TTYNAME
+#endif
+
+
+
+/* Specify the location of elements read from makefiles.  */
+typedef struct
+  {
+    const char *filenm;
+    unsigned long lineno;
+    unsigned long offset;
+  } floc;
+
+const char *concat (unsigned int, ...);
+void message (int prefix, size_t length, const char *fmt, ...)
+              __attribute__ ((__format__ (__printf__, 3, 4)));
+void error (const floc *flocp, size_t length, const char *fmt, ...)
+            __attribute__ ((__format__ (__printf__, 3, 4)));
+void fatal (const floc *flocp, size_t length, const char *fmt, ...)
+            __attribute__ ((noreturn, __format__ (__printf__, 3, 4)));
+void out_of_memory () __attribute__((noreturn));
+
+/* When adding macros to this list be sure to update the value of
+   XGETTEXT_OPTIONS in the po/Makevars file.  */
+#define O(_t,_a,_f)           _t((_a), 0, (_f))
+#define OS(_t,_a,_f,_s)       _t((_a), strlen (_s), (_f), (_s))
+#define OSS(_t,_a,_f,_s1,_s2) _t((_a), strlen (_s1) + strlen (_s2), \
+                                 (_f), (_s1), (_s2))
+#define OSSS(_t,_a,_f,_s1,_s2,_s3) _t((_a), strlen (_s1) + strlen (_s2) + strlen (_s3), \
+                                      (_f), (_s1), (_s2), (_s3))
+#define ON(_t,_a,_f,_n)       _t((_a), INTSTR_LENGTH, (_f), (_n))
+#define ONN(_t,_a,_f,_n1,_n2) _t((_a), INTSTR_LENGTH*2, (_f), (_n1), (_n2))
+
+#define OSN(_t,_a,_f,_s,_n)   _t((_a), strlen (_s) + INTSTR_LENGTH, \
+                                 (_f), (_s), (_n))
+#define ONS(_t,_a,_f,_n,_s)   _t((_a), INTSTR_LENGTH + strlen (_s), \
+                                 (_f), (_n), (_s))
+
+void die (int) __attribute__ ((noreturn));
+void pfatal_with_name (const char *) __attribute__ ((noreturn));
+void perror_with_name (const char *, const char *);
+#define xstrlen(_s) ((_s)==NULL ? 0 : strlen (_s))
+void *xmalloc (size_t);
+void *xcalloc (size_t);
+void *xrealloc (void *, size_t);
+char *xstrdup (const char *);
+char *xstrndup (const char *, size_t);
+char *find_next_token (const char **, size_t *);
+char *next_token (const char *);
+char *end_of_token (const char *);
+void collapse_continuations (char *);
+char *lindex (const char *, const char *, int);
+int alpha_compare (const void *, const void *);
+void print_spaces (unsigned int);
+char *find_percent (char *);
+const char *find_percent_cached (const char **);
+FILE *get_tmpfile (char **, const char *);
+ssize_t writebuf (int, const void*, size_t);
+ssize_t readbuf (int, void*, size_t);
+
+#ifndef NO_ARCHIVES
+int ar_name (const char *);
+void ar_parse_name (const char *, char **, char **);
+int ar_touch (const char *);
+time_t ar_member_date (const char *);
+
+typedef long int (*ar_member_func_t) (int desc, const char *mem, int truncated,
+                                      long int hdrpos, long int datapos,
+                                      long int size, long int date, int uid,
+                                      int gid, unsigned int mode,
+                                      const void *arg);
+
+long int ar_scan (const char *archive, ar_member_func_t function, const void *arg);
+int ar_name_equal (const char *name, const char *mem, int truncated);
+#ifndef VMS
+int ar_member_touch (const char *arname, const char *memname);
+#endif
+#endif
+
+int dir_file_exists_p (const char *, const char *);
+int file_exists_p (const char *);
+int file_impossible_p (const char *);
+void file_impossible (const char *);
+const char *dir_name (const char *);
+void print_dir_data_base (void);
+void dir_setup_glob (glob_t *);
+void hash_init_directories (void);
+
+void define_default_variables (void);
+void undefine_default_variables (void);
+void set_default_suffixes (void);
+void install_default_suffix_rules (void);
+void install_default_implicit_rules (void);
+
+void build_vpath_lists (void);
+void construct_vpath_list (char *pattern, char *dirpath);
+const char *vpath_search (const char *file, FILE_TIMESTAMP *mtime_ptr,
+                          unsigned int* vpath_index, unsigned int* path_index);
+int gpath_search (const char *file, size_t len);
+
+void construct_include_path (const char **arg_dirs);
+
+void user_access (void);
+void make_access (void);
+void child_access (void);
+
+char *strip_whitespace (const char **begpp, const char **endpp);
+
+void show_goal_error (void);
+
+/* String caching  */
+void strcache_init (void);
+void strcache_print_stats (const char *prefix);
+int strcache_iscached (const char *str);
+const char *strcache_add (const char *str);
+const char *strcache_add_len (const char *str, size_t len);
+
+/* Guile support  */
+int guile_gmake_setup (const floc *flocp);
+
+/* Loadable object support.  Sets to the strcached name of the loaded file.  */
+typedef int (*load_func_t)(const floc *flocp);
+int load_file (const floc *flocp, const char **filename, int noerror);
+void unload_file (const char *name);
+
+/* Maintainer mode support */
+#ifdef MAKE_MAINTAINER_MODE
+# define SPIN(_s) spin (_s)
+void spin (const char* suffix);
+#else
+# define SPIN(_s)
+#endif
+
+/* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
+   because such systems often declare them in header files anyway.  */
+
+#if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32)
+
+long int atol ();
+# ifndef VMS
+long int lseek ();
+# endif
+
+# ifdef  HAVE_GETCWD
+#  if !defined(VMS) && !defined(__DECC)
+char *getcwd ();
+#  endif
+# else
+char *getwd ();
+#  define getcwd(buf, len)       getwd (buf)
+# endif
+
+#endif  /* Not GNU C library or POSIX.  */
+
+#if !HAVE_STRCASECMP
+# if HAVE_STRICMP
+#  define strcasecmp stricmp
+# elif HAVE_STRCMPI
+#  define strcasecmp strcmpi
+# else
+/* Create our own, in misc.c */
+int strcasecmp (const char *s1, const char *s2);
+# endif
+#endif
+
+#if !HAVE_STRNCASECMP
+# if HAVE_STRNICMP
+#  define strncasecmp strnicmp
+# elif HAVE_STRNCMPI
+#  define strncasecmp strncmpi
+# else
+/* Create our own, in misc.c */
+int strncasecmp (const char *s1, const char *s2, int n);
+# endif
+#endif
+
+#define OUTPUT_SYNC_NONE    0
+#define OUTPUT_SYNC_LINE    1
+#define OUTPUT_SYNC_TARGET  2
+#define OUTPUT_SYNC_RECURSE 3
+
+/* Non-GNU systems may not declare this in unistd.h.  */
+extern char **environ;
+
+extern const floc *reading_file;
+extern const floc **expanding_var;
+
+extern unsigned short stopchar_map[];
+
+extern int just_print_flag, run_silent, ignore_errors_flag, keep_going_flag;
+extern int print_data_base_flag, question_flag, touch_flag, always_make_flag;
+extern int env_overrides, no_builtin_rules_flag, no_builtin_variables_flag;
+extern int print_version_flag, print_directory_flag, check_symlink_flag;
+extern int warn_undefined_variables_flag, trace_flag, posix_pedantic;
+extern int not_parallel, second_expansion, clock_skew_detected;
+extern int rebuilding_makefiles, one_shell, output_sync, verify_flag;
+
+extern const char *default_shell;
+
+/* can we run commands via 'sh -c xxx' or must we use batch files? */
+extern int batch_mode_shell;
+
+/* Resetting the command script introduction prefix character.  */
+#define RECIPEPREFIX_NAME          ".RECIPEPREFIX"
+#define RECIPEPREFIX_DEFAULT       '\t'
+extern char cmd_prefix;
+
+extern unsigned int job_slots;
+extern double max_load_average;
+
+extern const char *program;
+
+#ifdef VMS
+const char *vms_command (const char *argv0);
+const char *vms_progname (const char *argv0);
+
+void vms_exit (int);
+# define _exit(foo) vms_exit(foo)
+# define exit(foo) vms_exit(foo)
+
+extern char *program_name;
+
+void
+set_program_name (const char *arv0);
+
+int
+need_vms_symbol (void);
+
+int
+create_foreign_command (const char *command, const char *image);
+
+int
+vms_export_dcl_symbol (const char *name, const char *value);
+
+int
+vms_putenv_symbol (const char *string);
+
+void
+vms_restore_symbol (const char *string);
+
+#endif
+
+void remote_setup (void);
+void remote_cleanup (void);
+int start_remote_job_p (int);
+int start_remote_job (char **, char **, int, int *, pid_t *, int *);
+int remote_status (int *, int *, int *, int);
+void block_remote_children (void);
+void unblock_remote_children (void);
+int remote_kill (pid_t id, int sig);
+void print_variable_data_base (void);
+void print_vpath_data_base (void);
+
+extern char *starting_directory;
+extern unsigned int makelevel;
+extern char *version_string, *remote_description, *make_host;
+
+extern unsigned int commands_started;
+
+extern int handling_fatal_signal;
+
+#ifndef MIN
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+#ifndef MAX
+#define MAX(_a,_b) ((_a)>(_b)?(_a):(_b))
+#endif
+
+#define MAKE_SUCCESS 0
+#define MAKE_TROUBLE 1
+#define MAKE_FAILURE 2
+
+/* Set up heap debugging library dmalloc.  */
+
+#ifdef HAVE_DMALLOC_H
+#include <dmalloc.h>
+#endif
+
+#ifndef initialize_main
+# ifdef __EMX__
+#  define initialize_main(pargc, pargv) \
+                          { _wildcard(pargc, pargv); _response(pargc, pargv); }
+# else
+#  define initialize_main(pargc, pargv)
+# endif
+#endif
+
+#ifdef __EMX__
+# if !defined chdir
+#  define chdir _chdir2
+# endif
+# if !defined getcwd
+#  define getcwd _getcwd2
+# endif
+
+/* NO_CHDIR2 causes make not to use _chdir2() and _getcwd2() instead of
+   chdir() and getcwd(). This avoids some error messages for the
+   make testsuite but restricts the drive letter support. */
+# ifdef NO_CHDIR2
+#  warning NO_CHDIR2: usage of drive letters restricted
+#  undef chdir
+#  undef getcwd
+# endif
+#endif
+
+#ifndef initialize_main
+# define initialize_main(pargc, pargv)
+#endif
+
+
+/* Some systems (like Solaris, PTX, etc.) do not support the SA_RESTART flag
+   properly according to POSIX.  So, we try to wrap common system calls with
+   checks for EINTR.  Note that there are still plenty of system calls that
+   can fail with EINTR but this, reportedly, gets the vast majority of
+   failure cases.  If you still experience failures you'll need to either get
+   a system where SA_RESTART works, or you need to avoid -j.  */
+
+#define EINTRLOOP(_v,_c)   while (((_v)=_c)==-1 && errno==EINTR)
+
+/* While system calls that return integers are pretty consistent about
+   returning -1 on failure and setting errno in that case, functions that
+   return pointers are not always so well behaved.  Sometimes they return
+   NULL for expected behavior: one good example is readdir() which returns
+   NULL at the end of the directory--and _doesn't_ reset errno.  So, we have
+   to do it ourselves here.  */
+
+#define ENULLLOOP(_v,_c)   do { errno = 0; (_v) = _c; } \
+                           while((_v)==0 && errno==EINTR)

src/misc.c

@@ -0,0 +1,809 @@
+/* Miscellaneous generic support functions for GNU Make.
+Copyright (C) 1988-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "filedef.h"
+#include "dep.h"
+#include "debug.h"
+
+/* GNU make no longer supports pre-ANSI89 environments.  */
+
+#include <stdarg.h>
+
+#ifdef WINDOWS32
+# include <io.h>
+#endif
+
+#ifdef HAVE_FCNTL_H
+# include <fcntl.h>
+#else
+# include <sys/file.h>
+#endif
+
+/* Compare strings *S1 and *S2.
+   Return negative if the first is less, positive if it is greater,
+   zero if they are equal.  */
+
+int
+alpha_compare (const void *v1, const void *v2)
+{
+  const char *s1 = *((char **)v1);
+  const char *s2 = *((char **)v2);
+
+  if (*s1 != *s2)
+    return *s1 - *s2;
+  return strcmp (s1, s2);
+}
+
+/* Discard each backslash-newline combination from LINE.
+   Backslash-backslash-newline combinations become backslash-newlines.
+   This is done by copying the text at LINE into itself.  */
+
+void
+collapse_continuations (char *line)
+{
+  char *out = line;
+  char *in = line;
+  char *q;
+
+  q = strchr(in, '\n');
+  if (q == 0)
+    return;
+
+  do
+    {
+      char *p = q;
+      int i;
+      size_t out_line_length;
+
+      if (q > line && q[-1] == '\\')
+        {
+          /* Search for more backslashes.  */
+          i = -2;
+          while (&p[i] >= line && p[i] == '\\')
+            --i;
+          ++i;
+        }
+      else
+        i = 0;
+
+      /* The number of backslashes is now -I, keep half of them.  */
+      out_line_length = (p - in) + i - i/2;
+      if (out != in)
+        memmove (out, in, out_line_length);
+      out += out_line_length;
+
+      /* When advancing IN, skip the newline too.  */
+      in = q + 1;
+
+      if (i & 1)
+        {
+          /* Backslash/newline handling:
+             In traditional GNU make all trailing whitespace, consecutive
+             backslash/newlines, and any leading non-newline whitespace on the
+             next line is reduced to a single space.
+             In POSIX, each backslash/newline and is replaced by a space.  */
+          while (ISBLANK (*in))
+            ++in;
+          if (! posix_pedantic)
+            while (out > line && ISBLANK (out[-1]))
+              --out;
+          *out++ = ' ';
+        }
+      else
+        {
+          /* If the newline isn't quoted, put it in the output.  */
+          *out++ = '\n';
+        }
+
+      q = strchr(in, '\n');
+    }
+  while (q);
+
+  memmove(out, in, strlen(in) + 1);
+}
+
+/* Print N spaces (used in debug for target-depth).  */
+
+void
+print_spaces (unsigned int n)
+{
+  while (n-- > 0)
+    putchar (' ');
+}
+
+
+/* Return a string whose contents concatenate the NUM strings provided
+   This string lives in static, re-used memory.  */
+
+const char *
+concat (unsigned int num, ...)
+{
+  static size_t rlen = 0;
+  static char *result = NULL;
+  size_t ri = 0;
+  va_list args;
+
+  va_start (args, num);
+
+  while (num-- > 0)
+    {
+      const char *s = va_arg (args, const char *);
+      size_t l = xstrlen (s);
+
+      if (l == 0)
+        continue;
+
+      if (ri + l > rlen)
+        {
+          rlen = ((rlen ? rlen : 60) + l) * 2;
+          result = xrealloc (result, rlen);
+        }
+
+      memcpy (result + ri, s, l);
+      ri += l;
+    }
+
+  va_end (args);
+
+  /* Get some more memory if we don't have enough space for the
+     terminating '\0'.   */
+  if (ri == rlen)
+    {
+      rlen = (rlen ? rlen : 60) * 2;
+      result = xrealloc (result, rlen);
+    }
+
+  result[ri] = '\0';
+
+  return result;
+}
+
+/* Like malloc but get fatal error if memory is exhausted.  */
+/* Don't bother if we're using dmalloc; it provides these for us.  */
+
+#ifndef HAVE_DMALLOC_H
+
+#undef xmalloc
+#undef xcalloc
+#undef xrealloc
+#undef xstrdup
+
+void *
+xmalloc (size_t size)
+{
+  /* Make sure we don't allocate 0, for pre-ISO implementations.  */
+  void *result = malloc (size ? size : 1);
+  if (result == 0)
+    out_of_memory ();
+  return result;
+}
+
+
+void *
+xcalloc (size_t size)
+{
+  /* Make sure we don't allocate 0, for pre-ISO implementations.  */
+  void *result = calloc (size ? size : 1, 1);
+  if (result == 0)
+    out_of_memory ();
+  return result;
+}
+
+
+void *
+xrealloc (void *ptr, size_t size)
+{
+  void *result;
+
+  /* Some older implementations of realloc() don't conform to ISO.  */
+  if (! size)
+    size = 1;
+  result = ptr ? realloc (ptr, size) : malloc (size);
+  if (result == 0)
+    out_of_memory ();
+  return result;
+}
+
+
+char *
+xstrdup (const char *ptr)
+{
+  char *result;
+
+#ifdef HAVE_STRDUP
+  result = strdup (ptr);
+#else
+  result = malloc (strlen (ptr) + 1);
+#endif
+
+  if (result == 0)
+    out_of_memory ();
+
+#ifdef HAVE_STRDUP
+  return result;
+#else
+  return strcpy (result, ptr);
+#endif
+}
+
+#endif  /* HAVE_DMALLOC_H */
+
+char *
+xstrndup (const char *str, size_t length)
+{
+  char *result;
+
+#ifdef HAVE_STRNDUP
+  result = strndup (str, length);
+  if (result == 0)
+    out_of_memory ();
+#else
+  result = xmalloc (length + 1);
+  if (length > 0)
+    strncpy (result, str, length);
+  result[length] = '\0';
+#endif
+
+  return result;
+}
+
+
+/* Limited INDEX:
+   Search through the string STRING, which ends at LIMIT, for the character C.
+   Returns a pointer to the first occurrence, or nil if none is found.
+   Like INDEX except that the string searched ends where specified
+   instead of at the first null.  */
+
+char *
+lindex (const char *s, const char *limit, int c)
+{
+  while (s < limit)
+    if (*s++ == c)
+      return (char *)(s - 1);
+
+  return 0;
+}
+
+/* Return the address of the first whitespace or null in the string S.  */
+
+char *
+end_of_token (const char *s)
+{
+  END_OF_TOKEN (s);
+  return (char *)s;
+}
+
+/* Return the address of the first nonwhitespace or null in the string S.  */
+
+char *
+next_token (const char *s)
+{
+  NEXT_TOKEN (s);
+  return (char *)s;
+}
+
+/* Find the next token in PTR; return the address of it, and store the length
+   of the token into *LENGTHPTR if LENGTHPTR is not nil.  Set *PTR to the end
+   of the token, so this function can be called repeatedly in a loop.  */
+
+char *
+find_next_token (const char **ptr, size_t *lengthptr)
+{
+  const char *p = next_token (*ptr);
+
+  if (*p == '\0')
+    return 0;
+
+  *ptr = end_of_token (p);
+  if (lengthptr != 0)
+    *lengthptr = *ptr - p;
+
+  return (char *)p;
+}
+
+/* Write a BUFFER of size LEN to file descriptor FD.
+   Retry short writes from EINTR.  Return LEN, or -1 on error.  */
+ssize_t
+writebuf (int fd, const void *buffer, size_t len)
+{
+  const char *msg = buffer;
+  size_t l = len;
+  while (l)
+    {
+      ssize_t r;
+
+      EINTRLOOP (r, write (fd, msg, l));
+      if (r < 0)
+        return r;
+
+      l -= r;
+      msg += r;
+    }
+
+  return (ssize_t)len;
+}
+
+/* Read until we get LEN bytes from file descriptor FD, into BUFFER.
+   Retry short reads on EINTR.  If we get an error, return it.
+   Return 0 at EOF.  */
+ssize_t
+readbuf (int fd, void *buffer, size_t len)
+{
+  char *msg = buffer;
+  while (len)
+    {
+      ssize_t r;
+
+      EINTRLOOP (r, read (fd, msg, len));
+      if (r < 0)
+        return r;
+      if (r == 0)
+        break;
+
+      len -= r;
+      msg += r;
+    }
+
+  return (ssize_t)(msg - (char*)buffer);
+}
+
+
+/* Copy a chain of 'struct dep'.  For 2nd expansion deps, dup the name.  */
+
+struct dep *
+copy_dep_chain (const struct dep *d)
+{
+  struct dep *firstnew = 0;
+  struct dep *lastnew = 0;
+
+  while (d != 0)
+    {
+      struct dep *c = xmalloc (sizeof (struct dep));
+      memcpy (c, d, sizeof (struct dep));
+
+      if (c->need_2nd_expansion)
+        c->name = xstrdup (c->name);
+
+      c->next = 0;
+      if (firstnew == 0)
+        firstnew = lastnew = c;
+      else
+        lastnew = lastnew->next = c;
+
+      d = d->next;
+    }
+
+  return firstnew;
+}
+
+/* Free a chain of struct nameseq.
+   For struct dep chains use free_dep_chain.  */
+
+void
+free_ns_chain (struct nameseq *ns)
+{
+  while (ns != 0)
+    {
+      struct nameseq *t = ns;
+      ns = ns->next;
+      free_ns (t);
+    }
+}
+
+
+#ifdef MAKE_MAINTAINER_MODE
+
+void spin(const char* type)
+{
+  char filenm[256];
+  struct stat dummy;
+
+  sprintf (filenm, ".make-spin-%s", type);
+
+  if (stat (filenm, &dummy) == 0)
+    {
+      fprintf (stderr, "SPIN on %s\n", filenm);
+      do
+        sleep (1);
+      while (stat (filenm, &dummy) == 0);
+    }
+}
+
+#endif
+
+
+
+/* Provide support for temporary files.  */
+
+#ifndef HAVE_STDLIB_H
+# ifdef HAVE_MKSTEMP
+int mkstemp (char *template);
+# else
+char *mktemp (char *template);
+# endif
+#endif
+
+FILE *
+get_tmpfile (char **name, const char *template)
+{
+  FILE *file;
+#ifdef HAVE_FDOPEN
+  int fd;
+#endif
+
+  /* Preserve the current umask, and set a restrictive one for temp files.  */
+  MODE_T mask = UMASK (0077);
+
+#if defined(HAVE_MKSTEMP) || defined(HAVE_MKTEMP)
+# define TEMPLATE_LEN   strlen (template)
+#else
+# define TEMPLATE_LEN   L_tmpnam
+#endif
+  *name = xmalloc (TEMPLATE_LEN + 1);
+  strcpy (*name, template);
+
+#if defined(HAVE_MKSTEMP) && defined(HAVE_FDOPEN)
+  /* It's safest to use mkstemp(), if we can.  */
+  EINTRLOOP (fd, mkstemp (*name));
+  if (fd == -1)
+    file = NULL;
+  else
+    file = fdopen (fd, "w");
+#else
+# ifdef HAVE_MKTEMP
+  (void) mktemp (*name);
+# else
+  (void) tmpnam (*name);
+# endif
+
+# ifdef HAVE_FDOPEN
+  /* Can't use mkstemp(), but guard against a race condition.  */
+  EINTRLOOP (fd, open (*name, O_CREAT|O_EXCL|O_WRONLY, 0600));
+  if (fd == -1)
+    return 0;
+  file = fdopen (fd, "w");
+# else
+  /* Not secure, but what can we do?  */
+  file = fopen (*name, "w");
+# endif
+#endif
+
+  UMASK (mask);
+
+  return file;
+}
+
+
+#if !HAVE_STRCASECMP && !HAVE_STRICMP && !HAVE_STRCMPI
+/* If we don't have strcasecmp() (from POSIX), or anything that can substitute
+   for it, define our own version.  */
+
+int
+strcasecmp (const char *s1, const char *s2)
+{
+  while (1)
+    {
+      int c1 = (int) *(s1++);
+      int c2 = (int) *(s2++);
+
+      if (isalpha (c1))
+        c1 = tolower (c1);
+      if (isalpha (c2))
+        c2 = tolower (c2);
+
+      if (c1 != '\0' && c1 == c2)
+        continue;
+
+      return (c1 - c2);
+    }
+}
+#endif
+
+#if !HAVE_STRNCASECMP && !HAVE_STRNICMP && !HAVE_STRNCMPI
+/* If we don't have strncasecmp() (from POSIX), or anything that can
+   substitute for it, define our own version.  */
+
+int
+strncasecmp (const char *s1, const char *s2, int n)
+{
+  while (n-- > 0)
+    {
+      int c1 = (int) *(s1++);
+      int c2 = (int) *(s2++);
+
+      if (isalpha (c1))
+        c1 = tolower (c1);
+      if (isalpha (c2))
+        c2 = tolower (c2);
+
+      if (c1 != '\0' && c1 == c2)
+        continue;
+
+      return (c1 - c2);
+    }
+
+  return 0;
+}
+#endif
+
+#ifdef  GETLOADAVG_PRIVILEGED
+
+#ifdef POSIX
+
+/* Hopefully if a system says it's POSIX.1 and has the setuid and setgid
+   functions, they work as POSIX.1 says.  Some systems (Alpha OSF/1 1.2,
+   for example) which claim to be POSIX.1 also have the BSD setreuid and
+   setregid functions, but they don't work as in BSD and only the POSIX.1
+   way works.  */
+
+#undef HAVE_SETREUID
+#undef HAVE_SETREGID
+
+#else   /* Not POSIX.  */
+
+/* Some POSIX.1 systems have the seteuid and setegid functions.  In a
+   POSIX-like system, they are the best thing to use.  However, some
+   non-POSIX systems have them too but they do not work in the POSIX style
+   and we must use setreuid and setregid instead.  */
+
+#undef HAVE_SETEUID
+#undef HAVE_SETEGID
+
+#endif  /* POSIX.  */
+
+#ifndef HAVE_UNISTD_H
+extern int getuid (), getgid (), geteuid (), getegid ();
+extern int setuid (), setgid ();
+#ifdef HAVE_SETEUID
+extern int seteuid ();
+#else
+#ifdef  HAVE_SETREUID
+extern int setreuid ();
+#endif  /* Have setreuid.  */
+#endif  /* Have seteuid.  */
+#ifdef HAVE_SETEGID
+extern int setegid ();
+#else
+#ifdef  HAVE_SETREGID
+extern int setregid ();
+#endif  /* Have setregid.  */
+#endif  /* Have setegid.  */
+#endif  /* No <unistd.h>.  */
+
+/* Keep track of the user and group IDs for user- and make- access.  */
+static int user_uid = -1, user_gid = -1, make_uid = -1, make_gid = -1;
+#define access_inited   (user_uid != -1)
+static enum { make, user } current_access;
+
+
+/* Under -d, write a message describing the current IDs.  */
+
+static void
+log_access (const char *flavor)
+{
+  if (! ISDB (DB_JOBS))
+    return;
+
+  /* All the other debugging messages go to stdout,
+     but we write this one to stderr because it might be
+     run in a child fork whose stdout is piped.  */
+
+  fprintf (stderr, _("%s: user %lu (real %lu), group %lu (real %lu)\n"),
+           flavor, (unsigned long) geteuid (), (unsigned long) getuid (),
+           (unsigned long) getegid (), (unsigned long) getgid ());
+  fflush (stderr);
+}
+
+
+static void
+init_access (void)
+{
+#ifndef VMS
+  user_uid = getuid ();
+  user_gid = getgid ();
+
+  make_uid = geteuid ();
+  make_gid = getegid ();
+
+  /* Do these ever fail?  */
+  if (user_uid == -1 || user_gid == -1 || make_uid == -1 || make_gid == -1)
+    pfatal_with_name ("get{e}[gu]id");
+
+  log_access (_("Initialized access"));
+
+  current_access = make;
+#endif
+}
+
+#endif  /* GETLOADAVG_PRIVILEGED */
+
+/* Give the process appropriate permissions for access to
+   user data (i.e., to stat files, or to spawn a child process).  */
+void
+user_access (void)
+{
+#ifdef  GETLOADAVG_PRIVILEGED
+
+  if (!access_inited)
+    init_access ();
+
+  if (current_access == user)
+    return;
+
+  /* We are in "make access" mode.  This means that the effective user and
+     group IDs are those of make (if it was installed setuid or setgid).
+     We now want to set the effective user and group IDs to the real IDs,
+     which are the IDs of the process that exec'd make.  */
+
+#ifdef  HAVE_SETEUID
+
+  /* Modern systems have the seteuid/setegid calls which set only the
+     effective IDs, which is ideal.  */
+
+  if (seteuid (user_uid) < 0)
+    pfatal_with_name ("user_access: seteuid");
+
+#else   /* Not HAVE_SETEUID.  */
+
+#ifndef HAVE_SETREUID
+
+  /* System V has only the setuid/setgid calls to set user/group IDs.
+     There is an effective ID, which can be set by setuid/setgid.
+     It can be set (unless you are root) only to either what it already is
+     (returned by geteuid/getegid, now in make_uid/make_gid),
+     the real ID (return by getuid/getgid, now in user_uid/user_gid),
+     or the saved set ID (what the effective ID was before this set-ID
+     executable (make) was exec'd).  */
+
+  if (setuid (user_uid) < 0)
+    pfatal_with_name ("user_access: setuid");
+
+#else   /* HAVE_SETREUID.  */
+
+  /* In 4BSD, the setreuid/setregid calls set both the real and effective IDs.
+     They may be set to themselves or each other.  So you have two alternatives
+     at any one time.  If you use setuid/setgid, the effective will be set to
+     the real, leaving only one alternative.  Using setreuid/setregid, however,
+     you can toggle between your two alternatives by swapping the values in a
+     single setreuid or setregid call.  */
+
+  if (setreuid (make_uid, user_uid) < 0)
+    pfatal_with_name ("user_access: setreuid");
+
+#endif  /* Not HAVE_SETREUID.  */
+#endif  /* HAVE_SETEUID.  */
+
+#ifdef  HAVE_SETEGID
+  if (setegid (user_gid) < 0)
+    pfatal_with_name ("user_access: setegid");
+#else
+#ifndef HAVE_SETREGID
+  if (setgid (user_gid) < 0)
+    pfatal_with_name ("user_access: setgid");
+#else
+  if (setregid (make_gid, user_gid) < 0)
+    pfatal_with_name ("user_access: setregid");
+#endif
+#endif
+
+  current_access = user;
+
+  log_access (_("User access"));
+
+#endif  /* GETLOADAVG_PRIVILEGED */
+}
+
+/* Give the process appropriate permissions for access to
+   make data (i.e., the load average).  */
+void
+make_access (void)
+{
+#ifdef  GETLOADAVG_PRIVILEGED
+
+  if (!access_inited)
+    init_access ();
+
+  if (current_access == make)
+    return;
+
+  /* See comments in user_access, above.  */
+
+#ifdef  HAVE_SETEUID
+  if (seteuid (make_uid) < 0)
+    pfatal_with_name ("make_access: seteuid");
+#else
+#ifndef HAVE_SETREUID
+  if (setuid (make_uid) < 0)
+    pfatal_with_name ("make_access: setuid");
+#else
+  if (setreuid (user_uid, make_uid) < 0)
+    pfatal_with_name ("make_access: setreuid");
+#endif
+#endif
+
+#ifdef  HAVE_SETEGID
+  if (setegid (make_gid) < 0)
+    pfatal_with_name ("make_access: setegid");
+#else
+#ifndef HAVE_SETREGID
+  if (setgid (make_gid) < 0)
+    pfatal_with_name ("make_access: setgid");
+#else
+  if (setregid (user_gid, make_gid) < 0)
+    pfatal_with_name ("make_access: setregid");
+#endif
+#endif
+
+  current_access = make;
+
+  log_access (_("Make access"));
+
+#endif  /* GETLOADAVG_PRIVILEGED */
+}
+
+/* Give the process appropriate permissions for a child process.
+   This is like user_access, but you can't get back to make_access.  */
+void
+child_access (void)
+{
+#ifdef  GETLOADAVG_PRIVILEGED
+
+  if (!access_inited)
+    abort ();
+
+  /* Set both the real and effective UID and GID to the user's.
+     They cannot be changed back to make's.  */
+
+#ifndef HAVE_SETREUID
+  if (setuid (user_uid) < 0)
+    pfatal_with_name ("child_access: setuid");
+#else
+  if (setreuid (user_uid, user_uid) < 0)
+    pfatal_with_name ("child_access: setreuid");
+#endif
+
+#ifndef HAVE_SETREGID
+  if (setgid (user_gid) < 0)
+    pfatal_with_name ("child_access: setgid");
+#else
+  if (setregid (user_gid, user_gid) < 0)
+    pfatal_with_name ("child_access: setregid");
+#endif
+
+  log_access (_("Child access"));
+
+#endif  /* GETLOADAVG_PRIVILEGED */
+}
+
+#ifdef NEED_GET_PATH_MAX
+unsigned int
+get_path_max (void)
+{
+  static unsigned int value;
+
+  if (value == 0)
+    {
+      long int x = pathconf ("/", _PC_PATH_MAX);
+      if (x > 0)
+        value = x;
+      else
+        return MAXPATHLEN;
+    }
+
+  return value;
+}
+#endif

src/os.h

@@ -0,0 +1,93 @@
+/* Declarations for operating system interfaces for GNU Make.
+Copyright (C) 2016-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+
+/* This section provides OS-specific functions to support the jobserver.  */
+
+#ifdef MAKE_JOBSERVER
+
+/* Returns 1 if the jobserver is enabled, else 0.  */
+unsigned int jobserver_enabled (void);
+
+/* Called in the master instance to set up the jobserver initially.  */
+unsigned int jobserver_setup (int job_slots);
+
+/* Called in a child instance to connect to the jobserver.  */
+unsigned int jobserver_parse_auth (const char* auth);
+
+/* Returns an allocated buffer used to pass to child instances.  */
+char *jobserver_get_auth (void);
+
+/* Clear this instance's jobserver configuration.  */
+void jobserver_clear (void);
+
+/* Recover all the jobserver tokens and return the number we got.  */
+unsigned int jobserver_acquire_all (void);
+
+/* Release a jobserver token.  If it fails and is_fatal is 1, fatal.  */
+void jobserver_release (int is_fatal);
+
+/* Notify the jobserver that a child exited.  */
+void jobserver_signal (void);
+
+/* Get ready to start a non-recursive child.  */
+void jobserver_pre_child (int);
+
+/* Complete starting a non-recursive child.  */
+void jobserver_post_child (int);
+
+/* Set up to acquire a new token.  */
+void jobserver_pre_acquire (void);
+
+/* Wait until we can acquire a jobserver token.
+   TIMEOUT is 1 if we have other jobs waiting for the load to go down;
+   in this case we won't wait forever, so we can check the load.
+   Returns 1 if we got a token, or 0 if we stopped waiting due to a child
+   exiting or a timeout.    */
+unsigned int jobserver_acquire (int timeout);
+
+#else
+
+#define jobserver_enabled()         (0)
+#define jobserver_setup(_slots)     (0)
+#define jobserver_parse_auth(_auth) (0)
+#define jobserver_get_auth()        (NULL)
+#define jobserver_clear()           (void)(0)
+#define jobserver_release(_fatal)   (void)(0)
+#define jobserver_acquire_all()     (0)
+#define jobserver_signal()          (void)(0)
+#define jobserver_pre_child(_r)     (void)(0)
+#define jobserver_post_child(_r)    (void)(0)
+#define jobserver_pre_acquire()     (void)(0)
+#define jobserver_acquire(_tmout)   (0)
+
+#endif
+
+/* Create a "bad" file descriptor for stdin when parallel jobs are run.  */
+#if defined(VMS) || defined(WINDOWS32) || defined(_AMIGA) || defined(__MSDOS__)
+# define get_bad_stdin() (-1)
+#else
+int get_bad_stdin (void);
+#endif
+
+/* Set a file descriptor to close/not close in a subprocess.  */
+#if defined(VMS) || defined(_AMIGA) || defined(__MSDOS__)
+# define fd_inherit(_i)   0
+# define fd_noinherit(_i) 0
+#else
+void fd_inherit (int);
+void fd_noinherit (int);
+#endif

src/output.c

@@ -0,0 +1,682 @@
+/* Output to stdout / stderr for GNU make
+Copyright (C) 2013-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "os.h"
+#include "output.h"
+
+/* GNU make no longer supports pre-ANSI89 environments.  */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#ifdef HAVE_FCNTL_H
+# include <fcntl.h>
+#else
+# include <sys/file.h>
+#endif
+
+#ifdef WINDOWS32
+# include <windows.h>
+# include <io.h>
+# include "sub_proc.h"
+#endif /* WINDOWS32 */
+
+struct output *output_context = NULL;
+unsigned int stdio_traced = 0;
+
+#define OUTPUT_NONE (-1)
+
+#define OUTPUT_ISSET(_out) ((_out)->out >= 0 || (_out)->err >= 0)
+
+#ifdef HAVE_FCNTL_H
+# define STREAM_OK(_s) ((fcntl (fileno (_s), F_GETFD) != -1) || (errno != EBADF))
+#else
+# define STREAM_OK(_s) 1
+#endif
+
+/* Write a string to the current STDOUT or STDERR.  */
+static void
+_outputs (struct output *out, int is_err, const char *msg)
+{
+  if (! out || ! out->syncout)
+    {
+      FILE *f = is_err ? stderr : stdout;
+      fputs (msg, f);
+      fflush (f);
+    }
+  else
+    {
+      int fd = is_err ? out->err : out->out;
+      size_t len = strlen (msg);
+      int r;
+      EINTRLOOP (r, lseek (fd, 0, SEEK_END));
+      writebuf (fd, msg, len);
+    }
+}
+
+/* Write a message indicating that we've just entered or
+   left (according to ENTERING) the current directory.  */
+
+static int
+log_working_directory (int entering)
+{
+  static char *buf = NULL;
+  static size_t len = 0;
+  size_t need;
+  const char *fmt;
+  char *p;
+
+  /* Get enough space for the longest possible output.  */
+  need = strlen (program) + INTSTR_LENGTH + 2 + 1;
+  if (starting_directory)
+    need += strlen (starting_directory);
+
+  /* Use entire sentences to give the translators a fighting chance.  */
+  if (makelevel == 0)
+    if (starting_directory == 0)
+      if (entering)
+        fmt = _("%s: Entering an unknown directory\n");
+      else
+        fmt = _("%s: Leaving an unknown directory\n");
+    else
+      if (entering)
+        fmt = _("%s: Entering directory '%s'\n");
+      else
+        fmt = _("%s: Leaving directory '%s'\n");
+  else
+    if (starting_directory == 0)
+      if (entering)
+        fmt = _("%s[%u]: Entering an unknown directory\n");
+      else
+        fmt = _("%s[%u]: Leaving an unknown directory\n");
+    else
+      if (entering)
+        fmt = _("%s[%u]: Entering directory '%s'\n");
+      else
+        fmt = _("%s[%u]: Leaving directory '%s'\n");
+
+  need += strlen (fmt);
+
+  if (need > len)
+    {
+      buf = xrealloc (buf, need);
+      len = need;
+    }
+
+  p = buf;
+  if (print_data_base_flag)
+    {
+      *(p++) = '#';
+      *(p++) = ' ';
+    }
+
+  if (makelevel == 0)
+    if (starting_directory == 0)
+      sprintf (p, fmt , program);
+    else
+      sprintf (p, fmt, program, starting_directory);
+  else if (starting_directory == 0)
+    sprintf (p, fmt, program, makelevel);
+  else
+    sprintf (p, fmt, program, makelevel, starting_directory);
+
+  _outputs (NULL, 0, buf);
+
+  return 1;
+}
+
+/* Set a file descriptor to be in O_APPEND mode.
+   If it fails, just ignore it.  */
+
+static void
+set_append_mode (int fd)
+{
+#if defined(F_GETFL) && defined(F_SETFL) && defined(O_APPEND)
+  int flags = fcntl (fd, F_GETFL, 0);
+  if (flags >= 0)
+    {
+      int r;
+      EINTRLOOP(r, fcntl (fd, F_SETFL, flags | O_APPEND));
+    }
+#endif
+}
+
+
+#ifndef NO_OUTPUT_SYNC
+
+/* Semaphore for use in -j mode with output_sync. */
+static sync_handle_t sync_handle = -1;
+
+#define FD_NOT_EMPTY(_f) ((_f) != OUTPUT_NONE && lseek ((_f), 0, SEEK_END) > 0)
+
+/* Set up the sync handle.  Disables output_sync on error.  */
+static int
+sync_init (void)
+{
+  int combined_output = 0;
+
+#ifdef WINDOWS32
+  if ((!STREAM_OK (stdout) && !STREAM_OK (stderr))
+      || (sync_handle = create_mutex ()) == -1)
+    {
+      perror_with_name ("output-sync suppressed: ", "stderr");
+      output_sync = 0;
+    }
+  else
+    {
+      combined_output = same_stream (stdout, stderr);
+      prepare_mutex_handle_string (sync_handle);
+    }
+
+#else
+  if (STREAM_OK (stdout))
+    {
+      struct stat stbuf_o, stbuf_e;
+
+      sync_handle = fileno (stdout);
+      combined_output = (fstat (fileno (stdout), &stbuf_o) == 0
+                         && fstat (fileno (stderr), &stbuf_e) == 0
+                         && stbuf_o.st_dev == stbuf_e.st_dev
+                         && stbuf_o.st_ino == stbuf_e.st_ino);
+    }
+  else if (STREAM_OK (stderr))
+    sync_handle = fileno (stderr);
+  else
+    {
+      perror_with_name ("output-sync suppressed: ", "stderr");
+      output_sync = 0;
+    }
+#endif
+
+  return combined_output;
+}
+
+/* Support routine for output_sync() */
+static void
+pump_from_tmp (int from, FILE *to)
+{
+  static char buffer[8192];
+
+#ifdef WINDOWS32
+  int prev_mode;
+
+  /* "from" is opened by open_tmpfd, which does it in binary mode, so
+     we need the mode of "to" to match that.  */
+  prev_mode = _setmode (fileno (to), _O_BINARY);
+#endif
+
+  if (lseek (from, 0, SEEK_SET) == -1)
+    perror ("lseek()");
+
+  while (1)
+    {
+      int len;
+      EINTRLOOP (len, read (from, buffer, sizeof (buffer)));
+      if (len < 0)
+        perror ("read()");
+      if (len <= 0)
+        break;
+      if (fwrite (buffer, len, 1, to) < 1)
+        {
+          perror ("fwrite()");
+          break;
+        }
+      fflush (to);
+    }
+
+#ifdef WINDOWS32
+  /* Switch "to" back to its original mode, so that log messages by
+     Make have the same EOL format as without --output-sync.  */
+  _setmode (fileno (to), prev_mode);
+#endif
+}
+
+/* Obtain the lock for writing output.  */
+static void *
+acquire_semaphore (void)
+{
+  static struct flock fl;
+
+  fl.l_type = F_WRLCK;
+  fl.l_whence = SEEK_SET;
+  fl.l_start = 0;
+  fl.l_len = 1;
+  if (fcntl (sync_handle, F_SETLKW, &fl) != -1)
+    return &fl;
+  perror ("fcntl()");
+  return NULL;
+}
+
+/* Release the lock for writing output.  */
+static void
+release_semaphore (void *sem)
+{
+  struct flock *flp = (struct flock *)sem;
+  flp->l_type = F_UNLCK;
+  if (fcntl (sync_handle, F_SETLKW, flp) == -1)
+    perror ("fcntl()");
+}
+
+/* Returns a file descriptor to a temporary file.  The file is automatically
+   closed/deleted on exit.  Don't use a FILE* stream.  */
+int
+output_tmpfd (void)
+{
+  MODE_T mask = UMASK (0077);
+  int fd = -1;
+  FILE *tfile = tmpfile ();
+
+  if (! tfile)
+    pfatal_with_name ("tmpfile");
+
+  /* Create a duplicate so we can close the stream.  */
+  fd = dup (fileno (tfile));
+  if (fd < 0)
+    pfatal_with_name ("dup");
+
+  fclose (tfile);
+
+  set_append_mode (fd);
+
+  UMASK (mask);
+
+  return fd;
+}
+
+/* Adds file descriptors to the child structure to support output_sync; one
+   for stdout and one for stderr as long as they are open.  If stdout and
+   stderr share a device they can share a temp file too.
+   Will reset output_sync on error.  */
+static void
+setup_tmpfile (struct output *out)
+{
+  /* Is make's stdout going to the same place as stderr?  */
+  static int combined_output = -1;
+
+  if (combined_output < 0)
+    combined_output = sync_init ();
+
+  if (STREAM_OK (stdout))
+    {
+      int fd = output_tmpfd ();
+      if (fd < 0)
+        goto error;
+      fd_noinherit (fd);
+      out->out = fd;
+    }
+
+  if (STREAM_OK (stderr))
+    {
+      if (out->out != OUTPUT_NONE && combined_output)
+        out->err = out->out;
+      else
+        {
+          int fd = output_tmpfd ();
+          if (fd < 0)
+            goto error;
+          fd_noinherit (fd);
+          out->err = fd;
+        }
+    }
+
+  return;
+
+  /* If we failed to create a temp file, disable output sync going forward.  */
+ error:
+  output_close (out);
+  output_sync = OUTPUT_SYNC_NONE;
+}
+
+/* Synchronize the output of jobs in -j mode to keep the results of
+   each job together. This is done by holding the results in temp files,
+   one for stdout and potentially another for stderr, and only releasing
+   them to "real" stdout/stderr when a semaphore can be obtained. */
+
+void
+output_dump (struct output *out)
+{
+  int outfd_not_empty = FD_NOT_EMPTY (out->out);
+  int errfd_not_empty = FD_NOT_EMPTY (out->err);
+
+  if (outfd_not_empty || errfd_not_empty)
+    {
+      int traced = 0;
+
+      /* Try to acquire the semaphore.  If it fails, dump the output
+         unsynchronized; still better than silently discarding it.
+         We want to keep this lock for as little time as possible.  */
+      void *sem = acquire_semaphore ();
+
+      /* Log the working directory for this dump.  */
+      if (print_directory_flag && output_sync != OUTPUT_SYNC_RECURSE)
+        traced = log_working_directory (1);
+
+      if (outfd_not_empty)
+        pump_from_tmp (out->out, stdout);
+      if (errfd_not_empty && out->err != out->out)
+        pump_from_tmp (out->err, stderr);
+
+      if (traced)
+        log_working_directory (0);
+
+      /* Exit the critical section.  */
+      if (sem)
+        release_semaphore (sem);
+
+      /* Truncate and reset the output, in case we use it again.  */
+      if (out->out != OUTPUT_NONE)
+        {
+          int e;
+          lseek (out->out, 0, SEEK_SET);
+          EINTRLOOP (e, ftruncate (out->out, 0));
+        }
+      if (out->err != OUTPUT_NONE && out->err != out->out)
+        {
+          int e;
+          lseek (out->err, 0, SEEK_SET);
+          EINTRLOOP (e, ftruncate (out->err, 0));
+        }
+    }
+}
+#endif /* NO_OUTPUT_SYNC */
+
+
+/* This code is stolen from gnulib.
+   If/when we abandon the requirement to work with K&R compilers, we can
+   remove this (and perhaps other parts of GNU make!) and migrate to using
+   gnulib directly.
+
+   This is called only through atexit(), which means die() has already been
+   invoked.  So, call exit() here directly.  Apparently that works...?
+*/
+
+/* Close standard output, exiting with status 'exit_failure' on failure.
+   If a program writes *anything* to stdout, that program should close
+   stdout and make sure that it succeeds before exiting.  Otherwise,
+   suppose that you go to the extreme of checking the return status
+   of every function that does an explicit write to stdout.  The last
+   printf can succeed in writing to the internal stream buffer, and yet
+   the fclose(stdout) could still fail (due e.g., to a disk full error)
+   when it tries to write out that buffered data.  Thus, you would be
+   left with an incomplete output file and the offending program would
+   exit successfully.  Even calling fflush is not always sufficient,
+   since some file systems (NFS and CODA) buffer written/flushed data
+   until an actual close call.
+
+   Besides, it's wasteful to check the return value from every call
+   that writes to stdout -- just let the internal stream state record
+   the failure.  That's what the ferror test is checking below.
+
+   It's important to detect such failures and exit nonzero because many
+   tools (most notably 'make' and other build-management systems) depend
+   on being able to detect failure in other tools via their exit status.  */
+
+static void
+close_stdout (void)
+{
+  int prev_fail = ferror (stdout);
+  int fclose_fail = fclose (stdout);
+
+  if (prev_fail || fclose_fail)
+    {
+      if (fclose_fail)
+        perror_with_name (_("write error: stdout"), "");
+      else
+        O (error, NILF, _("write error: stdout"));
+      exit (MAKE_TROUBLE);
+    }
+}
+
+
+void
+output_init (struct output *out)
+{
+  if (out)
+    {
+      out->out = out->err = OUTPUT_NONE;
+      out->syncout = !!output_sync;
+      return;
+    }
+
+  /* Configure this instance of make.  Be sure stdout is line-buffered.  */
+
+#ifdef HAVE_SETVBUF
+# ifdef SETVBUF_REVERSED
+  setvbuf (stdout, _IOLBF, xmalloc (BUFSIZ), BUFSIZ);
+# else  /* setvbuf not reversed.  */
+  /* Some buggy systems lose if we pass 0 instead of allocating ourselves.  */
+  setvbuf (stdout, 0, _IOLBF, BUFSIZ);
+# endif /* setvbuf reversed.  */
+#elif HAVE_SETLINEBUF
+  setlinebuf (stdout);
+#endif  /* setlinebuf missing.  */
+
+  /* Force stdout/stderr into append mode.  This ensures parallel jobs won't
+     lose output due to overlapping writes.  */
+  set_append_mode (fileno (stdout));
+  set_append_mode (fileno (stderr));
+
+#ifdef HAVE_ATEXIT
+  if (STREAM_OK (stdout))
+    atexit (close_stdout);
+#endif
+}
+
+void
+output_close (struct output *out)
+{
+  if (! out)
+    {
+      if (stdio_traced)
+        log_working_directory (0);
+      return;
+    }
+
+#ifndef NO_OUTPUT_SYNC
+  output_dump (out);
+#endif
+
+  if (out->out >= 0)
+    close (out->out);
+  if (out->err >= 0 && out->err != out->out)
+    close (out->err);
+
+  output_init (out);
+}
+
+/* We're about to generate output: be sure it's set up.  */
+void
+output_start (void)
+{
+#ifndef NO_OUTPUT_SYNC
+  /* If we're syncing output make sure the temporary file is set up.  */
+  if (output_context && output_context->syncout)
+    if (! OUTPUT_ISSET(output_context))
+      setup_tmpfile (output_context);
+#endif
+
+  /* If we're not syncing this output per-line or per-target, make sure we emit
+     the "Entering..." message where appropriate.  */
+  if (output_sync == OUTPUT_SYNC_NONE || output_sync == OUTPUT_SYNC_RECURSE)
+    if (! stdio_traced && print_directory_flag)
+      stdio_traced = log_working_directory (1);
+}
+
+void
+outputs (int is_err, const char *msg)
+{
+  if (! msg || *msg == '\0')
+    return;
+
+  output_start ();
+
+  _outputs (output_context, is_err, msg);
+}
+
+
+static struct fmtstring
+  {
+    char *buffer;
+    size_t size;
+  } fmtbuf = { NULL, 0 };
+
+static char *
+get_buffer (size_t need)
+{
+  /* Make sure we have room.  NEED includes space for \0.  */
+  if (need > fmtbuf.size)
+    {
+      fmtbuf.size += need * 2;
+      fmtbuf.buffer = xrealloc (fmtbuf.buffer, fmtbuf.size);
+    }
+
+  fmtbuf.buffer[need-1] = '\0';
+
+  return fmtbuf.buffer;
+}
+
+/* Print a message on stdout.  */
+
+void
+message (int prefix, size_t len, const char *fmt, ...)
+{
+  va_list args;
+  char *p;
+
+  len += strlen (fmt) + strlen (program) + INTSTR_LENGTH + 4 + 1 + 1;
+  p = get_buffer (len);
+
+  if (prefix)
+    {
+      if (makelevel == 0)
+        sprintf (p, "%s: ", program);
+      else
+        sprintf (p, "%s[%u]: ", program, makelevel);
+      p += strlen (p);
+    }
+
+  va_start (args, fmt);
+  vsprintf (p, fmt, args);
+  va_end (args);
+
+  strcat (p, "\n");
+
+  assert (fmtbuf.buffer[len-1] == '\0');
+  outputs (0, fmtbuf.buffer);
+}
+
+/* Print an error message.  */
+
+void
+error (const floc *flocp, size_t len, const char *fmt, ...)
+{
+  va_list args;
+  char *p;
+
+  len += (strlen (fmt) + strlen (program)
+          + (flocp && flocp->filenm ? strlen (flocp->filenm) : 0)
+          + INTSTR_LENGTH + 4 + 1 + 1);
+  p = get_buffer (len);
+
+  if (flocp && flocp->filenm)
+    sprintf (p, "%s:%lu: ", flocp->filenm, flocp->lineno + flocp->offset);
+  else if (makelevel == 0)
+    sprintf (p, "%s: ", program);
+  else
+    sprintf (p, "%s[%u]: ", program, makelevel);
+  p += strlen (p);
+
+  va_start (args, fmt);
+  vsprintf (p, fmt, args);
+  va_end (args);
+
+  strcat (p, "\n");
+
+  assert (fmtbuf.buffer[len-1] == '\0');
+  outputs (1, fmtbuf.buffer);
+}
+
+/* Print an error message and exit.  */
+
+void
+fatal (const floc *flocp, size_t len, const char *fmt, ...)
+{
+  va_list args;
+  const char *stop = _(".  Stop.\n");
+  char *p;
+
+  len += (strlen (fmt) + strlen (program)
+          + (flocp && flocp->filenm ? strlen (flocp->filenm) : 0)
+          + INTSTR_LENGTH + 8 + strlen (stop) + 1);
+  p = get_buffer (len);
+
+  if (flocp && flocp->filenm)
+    sprintf (p, "%s:%lu: *** ", flocp->filenm, flocp->lineno + flocp->offset);
+  else if (makelevel == 0)
+    sprintf (p, "%s: *** ", program);
+  else
+    sprintf (p, "%s[%u]: *** ", program, makelevel);
+  p += strlen (p);
+
+  va_start (args, fmt);
+  vsprintf (p, fmt, args);
+  va_end (args);
+
+  strcat (p, stop);
+
+  assert (fmtbuf.buffer[len-1] == '\0');
+  outputs (1, fmtbuf.buffer);
+
+  die (MAKE_FAILURE);
+}
+
+/* Print an error message from errno.  */
+
+void
+perror_with_name (const char *str, const char *name)
+{
+  const char *err = strerror (errno);
+  OSSS (error, NILF, _("%s%s: %s"), str, name, err);
+}
+
+/* Print an error message from errno and exit.  */
+
+void
+pfatal_with_name (const char *name)
+{
+  const char *err = strerror (errno);
+  OSS (fatal, NILF, _("%s: %s"), name, err);
+
+  /* NOTREACHED */
+}
+
+/* Print a message about out of memory (not using more heap) and exit.
+   Our goal here is to be sure we don't try to allocate more memory, which
+   means we don't want to use string translations or normal cleanup.  */
+
+void
+out_of_memory ()
+{
+  writebuf (FD_STDOUT, program, strlen (program));
+  writebuf (FD_STDOUT, STRING_SIZE_TUPLE (": *** virtual memory exhausted\n"));
+  exit (MAKE_FAILURE);
+}

src/output.h

@@ -0,0 +1,106 @@
+/* Output to stdout / stderr for GNU make
+Copyright (C) 2013-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+struct output
+  {
+    int out;
+    int err;
+    unsigned int syncout:1;     /* True if we want to synchronize output.  */
+ };
+
+extern struct output *output_context;
+extern unsigned int stdio_traced;
+
+#define FD_STDIN  (fileno (stdin))
+#define FD_STDOUT (fileno (stdout))
+#define FD_STDERR (fileno (stderr))
+
+#define OUTPUT_SET(_new)    do{ output_context = (_new)->syncout ? (_new) : NULL; }while(0)
+#define OUTPUT_UNSET()      do{ output_context = NULL; }while(0)
+
+#define OUTPUT_TRACED()     do{ stdio_traced = 1; }while(0)
+#define OUTPUT_IS_TRACED()  (!!stdio_traced)
+
+/* Write a buffer directly to the given file descriptor.
+   This handles errors etc.  */
+int output_write (int fd, const void *buffer, size_t len);
+
+/* Initialize and close a child output structure: if NULL do this program's
+   output (this should only be done once).  */
+void output_init (struct output *out);
+void output_close (struct output *out);
+
+/* In situations where output may be about to be displayed but we're not
+   sure if we've set it up yet, call this.  */
+void output_start (void);
+
+/* Show a message on stdout or stderr.  Will start the output if needed.  */
+void outputs (int is_err, const char *msg);
+
+#if defined(HAVE_FCNTL_H)
+# include <fcntl.h>
+#elif defined(HAVE_SYS_FILE_H)
+# include <sys/file.h>
+#endif
+
+#ifdef NO_OUTPUT_SYNC
+# define RECORD_SYNC_MUTEX(m) \
+    O (error, NILF,                                                    \
+       _("-O[TYPE] (--output-sync[=TYPE]) is not configured for this build."));
+#else
+int output_tmpfd (void);
+/* Dump any child output content to stdout, and reset it.  */
+void output_dump (struct output *out);
+
+# ifdef WINDOWS32
+/* For emulations in w32/compat/posixfcn.c.  */
+#  define F_GETFD 1
+#  define F_SETLKW 2
+/* Implementation note: None of the values of l_type below can be zero
+   -- they are compared with a static instance of the struct, so zero
+   means unknown/invalid, see w32/compat/posixfcn.c. */
+#  define F_WRLCK 1
+#  define F_UNLCK 2
+
+struct flock
+  {
+    short l_type;
+    short l_whence;
+    off_t l_start;
+    off_t l_len;
+    pid_t l_pid;
+  };
+
+/* This type is actually a HANDLE, but we want to avoid including
+   windows.h as much as possible.  */
+typedef intptr_t sync_handle_t;
+
+/* Public functions emulated/provided in posixfcn.c.  */
+int fcntl (intptr_t fd, int cmd, ...);
+intptr_t create_mutex (void);
+int same_stream (FILE *f1, FILE *f2);
+
+#  define RECORD_SYNC_MUTEX(m) record_sync_mutex(m)
+void record_sync_mutex (const char *str);
+void prepare_mutex_handle_string (intptr_t hdl);
+# else  /* !WINDOWS32 */
+
+typedef int sync_handle_t;      /* file descriptor */
+
+#  define RECORD_SYNC_MUTEX(m) (void)(m)
+
+# endif
+#endif  /* !NO_OUTPUT_SYNC */

src/posixos.c

@@ -0,0 +1,512 @@
+/* POSIX-based operating system interface for GNU Make.
+Copyright (C) 2016-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include <stdio.h>
+
+#ifdef HAVE_FCNTL_H
+# include <fcntl.h>
+#elif defined(HAVE_SYS_FILE_H)
+# include <sys/file.h>
+#endif
+
+#if defined(HAVE_PSELECT) && defined(HAVE_SYS_SELECT_H)
+# include <sys/select.h>
+#endif
+
+#include "debug.h"
+#include "job.h"
+#include "os.h"
+
+#ifdef MAKE_JOBSERVER
+
+/* This section provides OS-specific functions to support the jobserver.  */
+
+/* These track the state of the jobserver pipe.  Passed to child instances.  */
+static int job_fds[2] = { -1, -1 };
+
+/* Used to signal read() that a SIGCHLD happened.  Always CLOEXEC.
+   If we use pselect() this will never be created and always -1.
+ */
+static int job_rfd = -1;
+
+/* Token written to the pipe (could be any character...)  */
+static char token = '+';
+
+static int
+make_job_rfd (void)
+{
+#ifdef HAVE_PSELECT
+  /* Pretend we succeeded.  */
+  return 0;
+#else
+  EINTRLOOP (job_rfd, dup (job_fds[0]));
+  if (job_rfd >= 0)
+    fd_noinherit (job_rfd);
+
+  return job_rfd;
+#endif
+}
+
+static void
+set_blocking (int fd, int blocking)
+{
+  /* If we're not using pselect() don't change the blocking.  */
+#ifdef HAVE_PSELECT
+  int flags;
+  EINTRLOOP (flags, fcntl (fd, F_GETFL));
+  if (flags >= 0)
+    {
+      int r;
+      flags = blocking ? (flags & ~O_NONBLOCK) : (flags | O_NONBLOCK);
+      EINTRLOOP (r, fcntl (fd, F_SETFL, flags));
+      if (r < 0)
+        pfatal_with_name ("fcntl(O_NONBLOCK)");
+    }
+#endif
+}
+
+unsigned int
+jobserver_setup (int slots)
+{
+  int r;
+
+  EINTRLOOP (r, pipe (job_fds));
+  if (r < 0)
+    pfatal_with_name (_("creating jobs pipe"));
+
+  /* By default we don't send the job pipe FDs to our children.
+     See jobserver_pre_child() and jobserver_post_child().  */
+  fd_noinherit (job_fds[0]);
+  fd_noinherit (job_fds[1]);
+
+  if (make_job_rfd () < 0)
+    pfatal_with_name (_("duping jobs pipe"));
+
+  while (slots--)
+    {
+      EINTRLOOP (r, write (job_fds[1], &token, 1));
+      if (r != 1)
+        pfatal_with_name (_("init jobserver pipe"));
+    }
+
+  /* When using pselect() we want the read to be non-blocking.  */
+  set_blocking (job_fds[0], 0);
+
+  return 1;
+}
+
+unsigned int
+jobserver_parse_auth (const char *auth)
+{
+  /* Given the command-line parameter, parse it.  */
+  if (sscanf (auth, "%d,%d", &job_fds[0], &job_fds[1]) != 2)
+    OS (fatal, NILF,
+        _("internal error: invalid --jobserver-auth string '%s'"), auth);
+
+  DB (DB_JOBS,
+      (_("Jobserver client (fds %d,%d)\n"), job_fds[0], job_fds[1]));
+
+#ifdef HAVE_FCNTL_H
+# define FD_OK(_f) (fcntl ((_f), F_GETFD) != -1)
+#else
+# define FD_OK(_f) 1
+#endif
+
+  /* Make sure our pipeline is valid, and (possibly) create a duplicate pipe,
+     that will be closed in the SIGCHLD handler.  If this fails with EBADF,
+     the parent has closed the pipe on us because it didn't think we were a
+     submake.  If so, warn and default to -j1.  */
+
+  if (!FD_OK (job_fds[0]) || !FD_OK (job_fds[1]) || make_job_rfd () < 0)
+    {
+      if (errno != EBADF)
+        pfatal_with_name (_("jobserver pipeline"));
+
+      job_fds[0] = job_fds[1] = -1;
+
+      return 0;
+    }
+
+  /* When using pselect() we want the read to be non-blocking.  */
+  set_blocking (job_fds[0], 0);
+
+  return 1;
+}
+
+char *
+jobserver_get_auth (void)
+{
+  char *auth = xmalloc ((INTSTR_LENGTH * 2) + 2);
+  sprintf (auth, "%d,%d", job_fds[0], job_fds[1]);
+  return auth;
+}
+
+unsigned int
+jobserver_enabled (void)
+{
+  return job_fds[0] >= 0;
+}
+
+void
+jobserver_clear (void)
+{
+  if (job_fds[0] >= 0)
+    close (job_fds[0]);
+  if (job_fds[1] >= 0)
+    close (job_fds[1]);
+  if (job_rfd >= 0)
+    close (job_rfd);
+
+  job_fds[0] = job_fds[1] = job_rfd = -1;
+}
+
+void
+jobserver_release (int is_fatal)
+{
+  int r;
+  EINTRLOOP (r, write (job_fds[1], &token, 1));
+  if (r != 1)
+    {
+      if (is_fatal)
+        pfatal_with_name (_("write jobserver"));
+      perror_with_name ("write", "");
+    }
+}
+
+unsigned int
+jobserver_acquire_all (void)
+{
+  unsigned int tokens = 0;
+
+  /* Use blocking reads to wait for all outstanding jobs.  */
+  set_blocking (job_fds[0], 1);
+
+  /* Close the write side, so the read() won't hang forever.  */
+  close (job_fds[1]);
+  job_fds[1] = -1;
+
+  while (1)
+    {
+      char intake;
+      int r;
+      EINTRLOOP (r, read (job_fds[0], &intake, 1));
+      if (r != 1)
+        return tokens;
+      ++tokens;
+    }
+}
+
+/* Prepare the jobserver to start a child process.  */
+void
+jobserver_pre_child (int recursive)
+{
+  if (recursive && job_fds[0] >= 0)
+    {
+      fd_inherit (job_fds[0]);
+      fd_inherit (job_fds[1]);
+    }
+}
+
+/* Reconfigure the jobserver after starting a child process.  */
+void
+jobserver_post_child (int recursive)
+{
+  if (recursive && job_fds[0] >= 0)
+    {
+      fd_noinherit (job_fds[0]);
+      fd_noinherit (job_fds[1]);
+    }
+}
+
+void
+jobserver_signal (void)
+{
+  if (job_rfd >= 0)
+    {
+      close (job_rfd);
+      job_rfd = -1;
+    }
+}
+
+void
+jobserver_pre_acquire (void)
+{
+  /* Make sure we have a dup'd FD.  */
+  if (job_rfd < 0 && job_fds[0] >= 0 && make_job_rfd () < 0)
+    pfatal_with_name (_("duping jobs pipe"));
+}
+
+#ifdef HAVE_PSELECT
+
+/* Use pselect() to atomically wait for both a signal and a file descriptor.
+   It also provides a timeout facility so we don't need to use SIGALRM.
+
+   This method relies on the fact that SIGCHLD will be blocked everywhere,
+   and only unblocked (atomically) within the pselect() call, so we can
+   never miss a SIGCHLD.
+ */
+unsigned int
+jobserver_acquire (int timeout)
+{
+  struct timespec spec;
+  struct timespec *specp = NULL;
+  sigset_t empty;
+
+  sigemptyset (&empty);
+
+  if (timeout)
+    {
+      /* Alarm after one second (is this too granular?)  */
+      spec.tv_sec = 1;
+      spec.tv_nsec = 0;
+      specp = &spec;
+    }
+
+  while (1)
+    {
+      fd_set readfds;
+      int r;
+      char intake;
+
+      FD_ZERO (&readfds);
+      FD_SET (job_fds[0], &readfds);
+
+      r = pselect (job_fds[0]+1, &readfds, NULL, NULL, specp, &empty);
+      if (r < 0)
+        switch (errno)
+          {
+          case EINTR:
+            /* SIGCHLD will show up as an EINTR.  */
+            return 0;
+
+          case EBADF:
+            /* Someone closed the jobs pipe.
+               That shouldn't happen but if it does we're done.  */
+              O (fatal, NILF, _("job server shut down"));
+
+          default:
+            pfatal_with_name (_("pselect jobs pipe"));
+          }
+
+      if (r == 0)
+        /* Timeout.  */
+        return 0;
+
+      /* The read FD is ready: read it!  This is non-blocking.  */
+      EINTRLOOP (r, read (job_fds[0], &intake, 1));
+
+      if (r < 0)
+        {
+          /* Someone sniped our token!  Try again.  */
+          if (errno == EAGAIN)
+            continue;
+
+          pfatal_with_name (_("read jobs pipe"));
+        }
+
+      /* read() should never return 0: only the master make can reap all the
+         tokens and close the write side...??  */
+      return r > 0;
+    }
+}
+
+#else
+
+/* This method uses a "traditional" UNIX model for waiting on both a signal
+   and a file descriptor.  However, it's complex and since we have a SIGCHLD
+   handler installed we need to check ALL system calls for EINTR: painful!
+
+   Read a token.  As long as there's no token available we'll block.  We
+   enable interruptible system calls before the read(2) so that if we get a
+   SIGCHLD while we're waiting, we'll return with EINTR and we can process the
+   death(s) and return tokens to the free pool.
+
+   Once we return from the read, we immediately reinstate restartable system
+   calls.  This allows us to not worry about checking for EINTR on all the
+   other system calls in the program.
+
+   There is one other twist: there is a span between the time reap_children()
+   does its last check for dead children and the time the read(2) call is
+   entered, below, where if a child dies we won't notice.  This is extremely
+   serious as it could cause us to deadlock, given the right set of events.
+
+   To avoid this, we do the following: before we reap_children(), we dup(2)
+   the read FD on the jobserver pipe.  The read(2) call below uses that new
+   FD.  In the signal handler, we close that FD.  That way, if a child dies
+   during the section mentioned above, the read(2) will be invoked with an
+   invalid FD and will return immediately with EBADF.  */
+
+static RETSIGTYPE
+job_noop (int sig UNUSED)
+{
+}
+
+/* Set the child handler action flags to FLAGS.  */
+static void
+set_child_handler_action_flags (int set_handler, int set_alarm)
+{
+  struct sigaction sa;
+
+#ifdef __EMX__
+  /* The child handler must be turned off here.  */
+  signal (SIGCHLD, SIG_DFL);
+#endif
+
+  memset (&sa, '\0', sizeof sa);
+  sa.sa_handler = child_handler;
+  sa.sa_flags = set_handler ? 0 : SA_RESTART;
+
+#if defined SIGCHLD
+  if (sigaction (SIGCHLD, &sa, NULL) < 0)
+    pfatal_with_name ("sigaction: SIGCHLD");
+#endif
+
+#if defined SIGCLD && SIGCLD != SIGCHLD
+  if (sigaction (SIGCLD, &sa, NULL) < 0)
+    pfatal_with_name ("sigaction: SIGCLD");
+#endif
+
+#if defined SIGALRM
+  if (set_alarm)
+    {
+      /* If we're about to enter the read(), set an alarm to wake up in a
+         second so we can check if the load has dropped and we can start more
+         work.  On the way out, turn off the alarm and set SIG_DFL.  */
+      if (set_handler)
+        {
+          sa.sa_handler = job_noop;
+          sa.sa_flags = 0;
+          if (sigaction (SIGALRM, &sa, NULL) < 0)
+            pfatal_with_name ("sigaction: SIGALRM");
+          alarm (1);
+        }
+      else
+        {
+          alarm (0);
+          sa.sa_handler = SIG_DFL;
+          sa.sa_flags = 0;
+          if (sigaction (SIGALRM, &sa, NULL) < 0)
+            pfatal_with_name ("sigaction: SIGALRM");
+        }
+    }
+#endif
+}
+
+unsigned int
+jobserver_acquire (int timeout)
+{
+  char intake;
+  int got_token;
+  int saved_errno;
+
+  /* Set interruptible system calls, and read() for a job token.  */
+  set_child_handler_action_flags (1, timeout);
+
+  EINTRLOOP (got_token, read (job_rfd, &intake, 1));
+  saved_errno = errno;
+
+  set_child_handler_action_flags (0, timeout);
+
+  if (got_token == 1)
+    return 1;
+
+  /* If the error _wasn't_ expected (EINTR or EBADF), fatal.  Otherwise,
+     go back and reap_children(), and try again.  */
+  errno = saved_errno;
+
+  if (errno != EINTR && errno != EBADF)
+    pfatal_with_name (_("read jobs pipe"));
+
+  if (errno == EBADF)
+    DB (DB_JOBS, ("Read returned EBADF.\n"));
+
+  return 0;
+}
+
+#endif /* HAVE_PSELECT */
+
+#endif /* MAKE_JOBSERVER */
+
+/* Create a "bad" file descriptor for stdin when parallel jobs are run.  */
+int
+get_bad_stdin (void)
+{
+  static int bad_stdin = -1;
+
+  /* Set up a bad standard input that reads from a broken pipe.  */
+
+  if (bad_stdin == -1)
+    {
+      /* Make a file descriptor that is the read end of a broken pipe.
+         This will be used for some children's standard inputs.  */
+      int pd[2];
+      if (pipe (pd) == 0)
+        {
+          /* Close the write side.  */
+          (void) close (pd[1]);
+          /* Save the read side.  */
+          bad_stdin = pd[0];
+
+          /* Set the descriptor to close on exec, so it does not litter any
+             child's descriptor table.  When it is dup2'd onto descriptor 0,
+             that descriptor will not close on exec.  */
+          fd_noinherit (bad_stdin);
+        }
+    }
+
+  return bad_stdin;
+}
+
+/* Set file descriptors to be inherited / not inherited by subprocesses.  */
+
+#if !defined(F_SETFD) || !defined(F_GETFD)
+void fd_inherit (int fd) {}
+void fd_noinherit (int fd) {}
+
+#else
+
+# ifndef FD_CLOEXEC
+#  define FD_CLOEXEC 1
+# endif
+
+void
+fd_inherit (int fd)
+{
+  int flags;
+  EINTRLOOP (flags, fcntl (fd, F_GETFD));
+  if (flags >= 0)
+    {
+      int r;
+      flags &= ~FD_CLOEXEC;
+      EINTRLOOP (r, fcntl (fd, F_SETFD, flags));
+    }
+}
+
+void
+fd_noinherit (int fd)
+{
+    int flags;
+    EINTRLOOP(flags, fcntl(fd, F_GETFD));
+    if (flags >= 0)
+      {
+        int r;
+        flags |= FD_CLOEXEC;
+        EINTRLOOP(r, fcntl(fd, F_SETFD, flags));
+      }
+}
+#endif

src/remote-cstms.c

@@ -0,0 +1,300 @@
+/* GNU Make remote job exportation interface to the Customs daemon.
+   THIS CODE IS NOT SUPPORTED BY THE GNU PROJECT.
+   Please do not send bug reports or questions about it to
+   the Make maintainers.
+
+Copyright (C) 1988-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "filedef.h"
+#include "commands.h"
+#include "job.h"
+#include "debug.h"
+
+#include <sys/time.h>
+#include <netdb.h>
+
+#include "customs.h"
+
+char *remote_description = "Customs";
+
+/* File name of the Customs 'export' client command.
+   A full path name can be used to avoid some path-searching overhead.  */
+#define EXPORT_COMMAND  "/usr/local/bin/export"
+
+/* ExportPermit gotten by start_remote_job_p, and used by start_remote_job.  */
+static ExportPermit permit;
+
+/* Normalized path name of the current directory.  */
+static char *normalized_cwd;
+
+/* Call once at startup even if no commands are run.  */
+
+void
+remote_setup (void)
+{
+}
+
+/* Called before exit.  */
+
+void
+remote_cleanup (void)
+{
+}
+
+/* Return nonzero if the next job should be done remotely.  */
+
+int
+start_remote_job_p (int first_p)
+{
+  static int inited = 0;
+  int status;
+  int njobs;
+
+  if (!inited)
+    {
+      /* Allow the user to turn off job exportation (useful while he is
+         debugging Customs, for example).  */
+      if (getenv ("GNU_MAKE_NO_CUSTOMS") != 0)
+        {
+          inited = -1;
+          return 0;
+        }
+
+      /* For secure Customs, make is installed setuid root and
+         Customs requires a privileged source port be used.  */
+      make_access ();
+
+      if (ISDB (DB_JOBS))
+        Rpc_Debug (1);
+
+      /* Ping the daemon once to see if it is there.  */
+      inited = Customs_Ping () == RPC_SUCCESS ? 1 : -1;
+
+      /* Return to normal user access.  */
+      user_access ();
+
+      if (starting_directory == 0)
+        /* main couldn't figure it out.  */
+        inited = -1;
+      else
+        {
+          /* Normalize the current directory path name to something
+             that should work on all machines exported to.  */
+
+          normalized_cwd = xmalloc (GET_PATH_MAX);
+          strcpy (normalized_cwd, starting_directory);
+          if (Customs_NormPath (normalized_cwd, GET_PATH_MAX) < 0)
+            /* Path normalization failure means using Customs
+               won't work, but it's not really an error.  */
+            inited = -1;
+        }
+    }
+
+  if (inited < 0)
+    return 0;
+
+  njobs = job_slots_used;
+  if (!first_p)
+    njobs -= 1;         /* correction for being called from reap_children() */
+
+  /* the first job should run locally, or, if the -l flag is given, we use
+     that as clue as to how many local jobs should be scheduled locally */
+  if (max_load_average < 0 && njobs == 0 || njobs < max_load_average)
+     return 0;
+
+  status = Customs_Host (EXPORT_SAME, &permit);
+  if (status != RPC_SUCCESS)
+    {
+      DB (DB_JOBS, (_("Customs won't export: %s\n"),
+                    Rpc_ErrorMessage (status)));
+      return 0;
+    }
+
+  return !CUSTOMS_FAIL (&permit.addr);
+}
+
+/* Start a remote job running the command in ARGV, with environment from
+   ENVP.  It gets standard input from STDIN_FD.  On failure, return
+   nonzero.  On success, return zero, and set *USED_STDIN to nonzero if it
+   will actually use STDIN_FD, zero if not, set *ID_PTR to a unique
+   identification, and set *IS_REMOTE to nonzero if the job is remote, zero
+   if it is local (meaning *ID_PTR is a process ID).  */
+
+int
+start_remote_job (char **argv, char **envp, int stdin_fd,
+                  int *is_remote, pid_t *id_ptr, int *used_stdin)
+{
+  char waybill[MAX_DATA_SIZE], msg[128];
+  struct hostent *host;
+  struct timeval timeout;
+  struct sockaddr_in sin;
+  int len;
+  int retsock, retport, sock;
+  Rpc_Stat status;
+  pid_t pid;
+
+  /* Create the return socket.  */
+  retsock = Rpc_UdpCreate (True, 0);
+  if (retsock < 0)
+    {
+      O (error, NILF, "exporting: Couldn't create return socket.");
+      return 1;
+    }
+
+  /* Get the return socket's port number.  */
+  len = sizeof (sin);
+  if (getsockname (retsock, (struct sockaddr *) &sin, &len) < 0)
+    {
+      (void) close (retsock);
+      perror_with_name ("exporting: ", "getsockname");
+      return 1;
+    }
+  retport = sin.sin_port;
+
+  /* Create the TCP socket for talking to the remote child.  */
+  sock = Rpc_TcpCreate (False, 0);
+
+  /* Create a WayBill to give to the server.  */
+  len = Customs_MakeWayBill (&permit, normalized_cwd, argv[0], argv,
+                             envp, retport, waybill);
+
+  /* Modify the waybill as if the remote child had done 'child_access ()'.  */
+  {
+    WayBill *wb = (WayBill *) waybill;
+    wb->ruid = wb->euid;
+    wb->rgid = wb->egid;
+  }
+
+  /* Send the request to the server, timing out in 20 seconds.  */
+  timeout.tv_usec = 0;
+  timeout.tv_sec = 20;
+  sin.sin_family = AF_INET;
+  sin.sin_port = htons (Customs_Port ());
+  sin.sin_addr = permit.addr;
+  status = Rpc_Call (sock, &sin, (Rpc_Proc) CUSTOMS_IMPORT,
+                     len, (Rpc_Opaque) waybill,
+                     sizeof (msg), (Rpc_Opaque) msg,
+                     1, &timeout);
+
+  host = gethostbyaddr ((char *)&permit.addr, sizeof(permit.addr), AF_INET);
+
+  {
+    const char *hnm = host ? host->h_name : inet_ntoa (permit.addr);
+    size_t hlen = strlen (hnm);
+
+    if (status != RPC_SUCCESS)
+      {
+        const char *err = Rpc_ErrorMessage (status);
+        (void) close (retsock);
+        (void) close (sock);
+        error (NILF, hlen + strlen (err),
+               "exporting to %s: %s", hnm, err);
+        return 1;
+      }
+    else if (msg[0] != 'O' || msg[1] != 'k' || msg[2] != '\0')
+      {
+        (void) close (retsock);
+        (void) close (sock);
+        error (NILF, hlen + strlen (msg), "exporting to %s: %s", hnm, msg);
+        return 1;
+      }
+    else
+      {
+        error (NILF, hlen + INTSTR_LENGTH,
+               "*** exported to %s (id %u)", hnm, permit.id);
+      }
+
+    fflush (stdout);
+    fflush (stderr);
+  }
+
+  pid = vfork ();
+  if (pid < 0)
+    {
+      /* The fork failed!  */
+      perror_with_name ("fork", "");
+      return 1;
+    }
+  else if (pid == 0)
+    {
+      /* Child side.  Run 'export' to handle the connection.  */
+      static char sock_buf[20], retsock_buf[20], id_buf[20];
+      static char *new_argv[6] =
+        { EXPORT_COMMAND, "-id", sock_buf, retsock_buf, id_buf, 0 };
+
+      /* Set up the arguments.  */
+      (void) sprintf (sock_buf, "%d", sock);
+      (void) sprintf (retsock_buf, "%d", retsock);
+      (void) sprintf (id_buf, "%x", permit.id);
+
+      /* Get the right stdin.  */
+      if (stdin_fd != 0)
+        (void) dup2 (stdin_fd, 0);
+
+      /* Unblock signals in the child.  */
+      unblock_all_sigs ();
+
+      /* Run the command.  */
+      exec_command (new_argv, envp);
+    }
+
+  /* Parent side.  Return the 'export' process's ID.  */
+  (void) close (retsock);
+  (void) close (sock);
+  *is_remote = 0;
+  *id_ptr = pid;
+  *used_stdin = 1;
+  return 0;
+}
+
+/* Get the status of a dead remote child.  Block waiting for one to die
+   if BLOCK is nonzero.  Set *EXIT_CODE_PTR to the exit status, *SIGNAL_PTR
+   to the termination signal or zero if it exited normally, and *COREDUMP_PTR
+   nonzero if it dumped core.  Return the ID of the child that died,
+   0 if we would have to block and !BLOCK, or < 0 if there were none.  */
+
+int
+remote_status (int *exit_code_ptr, int *signal_ptr, int *coredump_ptr,
+               int block)
+{
+  return -1;
+}
+
+/* Block asynchronous notification of remote child death.
+   If this notification is done by raising the child termination
+   signal, do not block that signal.  */
+void
+block_remote_children (void)
+{
+  return;
+}
+
+/* Restore asynchronous notification of remote child death.
+   If this is done by raising the child termination signal,
+   do not unblock that signal.  */
+void
+unblock_remote_children (void)
+{
+  return;
+}
+
+/* Send signal SIG to child ID.  Return 0 if successful, -1 if not.  */
+int
+remote_kill (pid_t id, int sig)
+{
+  return -1;
+}

src/remote-stub.c

@@ -0,0 +1,99 @@
+/* Template for the remote job exportation interface to GNU Make.
+Copyright (C) 1988-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+#include "filedef.h"
+#include "job.h"
+#include "commands.h"
+
+
+char *remote_description = 0;
+
+/* Call once at startup even if no commands are run.  */
+
+void
+remote_setup (void)
+{
+}
+
+/* Called before exit.  */
+
+void
+remote_cleanup (void)
+{
+}
+
+/* Return nonzero if the next job should be done remotely.  */
+
+int
+start_remote_job_p (int first_p UNUSED)
+{
+  return 0;
+}
+
+/* Start a remote job running the command in ARGV,
+   with environment from ENVP.  It gets standard input from STDIN_FD.  On
+   failure, return nonzero.  On success, return zero, and set *USED_STDIN
+   to nonzero if it will actually use STDIN_FD, zero if not, set *ID_PTR to
+   a unique identification, and set *IS_REMOTE to zero if the job is local,
+   nonzero if it is remote (meaning *ID_PTR is a process ID).  */
+
+int
+start_remote_job (char **argv UNUSED, char **envp UNUSED, int stdin_fd UNUSED,
+                  int *is_remote UNUSED, pid_t *id_ptr UNUSED,
+                  int *used_stdin UNUSED)
+{
+  return -1;
+}
+
+/* Get the status of a dead remote child.  Block waiting for one to die
+   if BLOCK is nonzero.  Set *EXIT_CODE_PTR to the exit status, *SIGNAL_PTR
+   to the termination signal or zero if it exited normally, and *COREDUMP_PTR
+   nonzero if it dumped core.  Return the ID of the child that died,
+   0 if we would have to block and !BLOCK, or < 0 if there were none.  */
+
+int
+remote_status (int *exit_code_ptr UNUSED, int *signal_ptr UNUSED,
+               int *coredump_ptr UNUSED, int block UNUSED)
+{
+  errno = ECHILD;
+  return -1;
+}
+
+/* Block asynchronous notification of remote child death.
+   If this notification is done by raising the child termination
+   signal, do not block that signal.  */
+void
+block_remote_children (void)
+{
+  return;
+}
+
+/* Restore asynchronous notification of remote child death.
+   If this is done by raising the child termination signal,
+   do not unblock that signal.  */
+void
+unblock_remote_children (void)
+{
+  return;
+}
+
+/* Send signal SIG to child ID.  Return 0 if successful, -1 if not.  */
+int
+remote_kill (pid_t id UNUSED, int sig UNUSED)
+{
+  return -1;
+}

src/rule.c

@@ -0,0 +1,529 @@
+/* Pattern and suffix rule internals for GNU Make.
+Copyright (C) 1988-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "makeint.h"
+
+#include <assert.h>
+
+#include "filedef.h"
+#include "dep.h"
+#include "job.h"
+#include "commands.h"
+#include "variable.h"
+#include "rule.h"
+
+static void freerule (struct rule *rule, struct rule *lastrule);
+
+/* Chain of all pattern rules.  */
+
+struct rule *pattern_rules;
+
+/* Pointer to last rule in the chain, so we can add onto the end.  */
+
+struct rule *last_pattern_rule;
+
+/* Number of rules in the chain.  */
+
+unsigned int num_pattern_rules;
+
+/* Maximum number of target patterns of any pattern rule.  */
+
+unsigned int max_pattern_targets;
+
+/* Maximum number of dependencies of any pattern rule.  */
+
+unsigned int max_pattern_deps;
+
+/* Maximum length of the name of a dependencies of any pattern rule.  */
+
+size_t max_pattern_dep_length;
+
+/* Pointer to structure for the file .SUFFIXES
+   whose dependencies are the suffixes to be searched.  */
+
+struct file *suffix_file;
+
+/* Maximum length of a suffix.  */
+
+static size_t maxsuffix;
+
+/* Compute the maximum dependency length and maximum number of
+   dependencies of all implicit rules.  Also sets the subdir
+   flag for a rule when appropriate, possibly removing the rule
+   completely when appropriate.  */
+
+void
+count_implicit_rule_limits (void)
+{
+  char *name;
+  size_t namelen;
+  struct rule *rule;
+
+  num_pattern_rules = max_pattern_targets = max_pattern_deps = 0;
+  max_pattern_dep_length = 0;
+
+  name = 0;
+  namelen = 0;
+  rule = pattern_rules;
+  while (rule != 0)
+    {
+      unsigned int ndeps = 0;
+      struct dep *dep;
+      struct rule *next = rule->next;
+
+      ++num_pattern_rules;
+
+      if (rule->num > max_pattern_targets)
+        max_pattern_targets = rule->num;
+
+      for (dep = rule->deps; dep != 0; dep = dep->next)
+        {
+          const char *dname = dep_name (dep);
+          size_t len = strlen (dname);
+
+#ifdef VMS
+          const char *p = strrchr (dname, ']');
+          const char *p2;
+          if (p == 0)
+            p = strrchr (dname, ':');
+          p2 = p != 0 ? strchr (dname, '%') : 0;
+#else
+          const char *p = strrchr (dname, '/');
+          const char *p2 = p != 0 ? strchr (dname, '%') : 0;
+#endif
+          ndeps++;
+
+          if (len > max_pattern_dep_length)
+            max_pattern_dep_length = len;
+
+          if (p != 0 && p2 > p)
+            {
+              /* There is a slash before the % in the dep name.
+                 Extract the directory name.  */
+              if (p == dname)
+                ++p;
+              if ((size_t) (p - dname) > namelen)
+                {
+                  namelen = p - dname;
+                  name = xrealloc (name, namelen + 1);
+                }
+              memcpy (name, dname, p - dname);
+              name[p - dname] = '\0';
+
+              /* In the deps of an implicit rule the 'changed' flag
+                 actually indicates that the dependency is in a
+                 nonexistent subdirectory.  */
+
+              dep->changed = !dir_file_exists_p (name, "");
+            }
+          else
+            /* This dependency does not reside in a subdirectory.  */
+            dep->changed = 0;
+        }
+
+      if (ndeps > max_pattern_deps)
+        max_pattern_deps = ndeps;
+
+      rule = next;
+    }
+
+  free (name);
+}
+
+/* Create a pattern rule from a suffix rule.
+   TARGET is the target suffix; SOURCE is the source suffix.
+   CMDS are the commands.
+   If TARGET is nil, it means the target pattern should be '(%.o)'.
+   If SOURCE is nil, it means there should be no deps.  */
+
+static void
+convert_suffix_rule (const char *target, const char *source,
+                     struct commands *cmds)
+{
+  const char **names, **percents;
+  struct dep *deps;
+
+  names = xmalloc (sizeof (const char *));
+  percents = xmalloc (sizeof (const char *));
+
+  if (target == 0)
+    {
+      /* Special case: TARGET being nil means we are defining a '.X.a' suffix
+         rule; the target pattern is always '(%.o)'.  */
+#ifdef VMS
+      *names = strcache_add_len ("(%.obj)", 7);
+#else
+      *names = strcache_add_len ("(%.o)", 5);
+#endif
+      *percents = *names + 1;
+    }
+  else
+    {
+      /* Construct the target name.  */
+      size_t len = strlen (target);
+      char *p = alloca (1 + len + 1);
+      p[0] = '%';
+      memcpy (p + 1, target, len + 1);
+      *names = strcache_add_len (p, len + 1);
+      *percents = *names;
+    }
+
+  if (source == 0)
+    deps = 0;
+  else
+    {
+      /* Construct the dependency name.  */
+      size_t len = strlen (source);
+      char *p = alloca (1 + len + 1);
+      p[0] = '%';
+      memcpy (p + 1, source, len + 1);
+      deps = alloc_dep ();
+      deps->name = strcache_add_len (p, len + 1);
+    }
+
+  create_pattern_rule (names, percents, 1, 0, deps, cmds, 0);
+}
+
+/* Convert old-style suffix rules to pattern rules.
+   All rules for the suffixes on the .SUFFIXES list are converted and added to
+   the chain of pattern rules.  */
+
+void
+convert_to_pattern (void)
+{
+  struct dep *d, *d2;
+  char *rulename;
+
+  /* We will compute every potential suffix rule (.x.y) from the list of
+     suffixes in the .SUFFIXES target's dependencies and see if it exists.
+     First find the longest of the suffixes.  */
+
+  maxsuffix = 0;
+  for (d = suffix_file->deps; d != 0; d = d->next)
+    {
+      size_t l = strlen (dep_name (d));
+      if (l > maxsuffix)
+        maxsuffix = l;
+    }
+
+  /* Space to construct the suffix rule target name.  */
+  rulename = alloca ((maxsuffix * 2) + 1);
+
+  for (d = suffix_file->deps; d != 0; d = d->next)
+    {
+      size_t slen;
+
+      /* Make a rule that is just the suffix, with no deps or commands.
+         This rule exists solely to disqualify match-anything rules.  */
+      convert_suffix_rule (dep_name (d), 0, 0);
+
+      if (d->file->cmds != 0)
+        /* Record a pattern for this suffix's null-suffix rule.  */
+        convert_suffix_rule ("", dep_name (d), d->file->cmds);
+
+      /* Add every other suffix to this one and see if it exists as a
+         two-suffix rule.  */
+      slen = strlen (dep_name (d));
+      memcpy (rulename, dep_name (d), slen);
+
+      for (d2 = suffix_file->deps; d2 != 0; d2 = d2->next)
+        {
+          struct file *f;
+          size_t s2len;
+
+          s2len = strlen (dep_name (d2));
+
+          /* Can't build something from itself.  */
+          if (slen == s2len && streq (dep_name (d), dep_name (d2)))
+            continue;
+
+          memcpy (rulename + slen, dep_name (d2), s2len + 1);
+          f = lookup_file (rulename);
+
+          /* No target, or no commands, or it has deps: it can't be a
+             suffix rule.  */
+          if (f == 0 || f->cmds == 0 || f->deps != 0)
+            continue;
+
+          if (s2len == 2 && rulename[slen] == '.' && rulename[slen + 1] == 'a')
+            /* A suffix rule '.X.a:' generates the pattern rule '(%.o): %.X'.
+               It also generates a normal '%.a: %.X' rule below.  */
+            convert_suffix_rule (NULL, /* Indicates '(%.o)'.  */
+                                 dep_name (d),
+                                 f->cmds);
+
+          /* The suffix rule '.X.Y:' is converted
+             to the pattern rule '%.Y: %.X'.  */
+          convert_suffix_rule (dep_name (d2), dep_name (d), f->cmds);
+        }
+    }
+}
+
+
+/* Install the pattern rule RULE (whose fields have been filled in) at the end
+   of the list (so that any rules previously defined will take precedence).
+   If this rule duplicates a previous one (identical target and dependencies),
+   the old one is replaced if OVERRIDE is nonzero, otherwise this new one is
+   thrown out.  When an old rule is replaced, the new one is put at the end of
+   the list.  Return nonzero if RULE is used; zero if not.  */
+
+static int
+new_pattern_rule (struct rule *rule, int override)
+{
+  struct rule *r, *lastrule;
+  unsigned int i, j;
+
+  rule->in_use = 0;
+  rule->terminal = 0;
+
+  rule->next = 0;
+
+  /* Search for an identical rule.  */
+  lastrule = 0;
+  for (r = pattern_rules; r != 0; lastrule = r, r = r->next)
+    for (i = 0; i < rule->num; ++i)
+      {
+        for (j = 0; j < r->num; ++j)
+          if (!streq (rule->targets[i], r->targets[j]))
+            break;
+        /* If all the targets matched...  */
+        if (j == r->num)
+          {
+            struct dep *d, *d2;
+            for (d = rule->deps, d2 = r->deps;
+                 d != 0 && d2 != 0; d = d->next, d2 = d2->next)
+              if (!streq (dep_name (d), dep_name (d2)))
+                break;
+            if (d == 0 && d2 == 0)
+              {
+                /* All the dependencies matched.  */
+                if (override)
+                  {
+                    /* Remove the old rule.  */
+                    freerule (r, lastrule);
+                    /* Install the new one.  */
+                    if (pattern_rules == 0)
+                      pattern_rules = rule;
+                    else
+                      last_pattern_rule->next = rule;
+                    last_pattern_rule = rule;
+
+                    /* We got one.  Stop looking.  */
+                    goto matched;
+                  }
+                else
+                  {
+                    /* The old rule stays intact.  Destroy the new one.  */
+                    freerule (rule, (struct rule *) 0);
+                    return 0;
+                  }
+              }
+          }
+      }
+
+ matched:;
+
+  if (r == 0)
+    {
+      /* There was no rule to replace.  */
+      if (pattern_rules == 0)
+        pattern_rules = rule;
+      else
+        last_pattern_rule->next = rule;
+      last_pattern_rule = rule;
+    }
+
+  return 1;
+}
+
+
+/* Install an implicit pattern rule based on the three text strings
+   in the structure P points to.  These strings come from one of
+   the arrays of default implicit pattern rules.
+   TERMINAL specifies what the 'terminal' field of the rule should be.  */
+
+void
+install_pattern_rule (struct pspec *p, int terminal)
+{
+  struct rule *r;
+  const char *ptr;
+
+  r = xmalloc (sizeof (struct rule));
+
+  r->num = 1;
+  r->targets = xmalloc (sizeof (const char *));
+  r->suffixes = xmalloc (sizeof (const char *));
+  r->lens = xmalloc (sizeof (unsigned int));
+
+  r->lens[0] = (unsigned int) strlen (p->target);
+  r->targets[0] = p->target;
+  r->suffixes[0] = find_percent_cached (&r->targets[0]);
+  assert (r->suffixes[0] != NULL);
+  ++r->suffixes[0];
+
+  ptr = p->dep;
+  r->deps = PARSE_SIMPLE_SEQ ((char **)&ptr, struct dep);
+
+  if (new_pattern_rule (r, 0))
+    {
+      r->terminal = terminal ? 1 : 0;
+      r->cmds = xmalloc (sizeof (struct commands));
+      r->cmds->fileinfo.filenm = 0;
+      r->cmds->fileinfo.lineno = 0;
+      r->cmds->fileinfo.offset = 0;
+      /* These will all be string literals, but we malloc space for them
+         anyway because somebody might want to free them later.  */
+      r->cmds->commands = xstrdup (p->commands);
+      r->cmds->command_lines = 0;
+      r->cmds->recipe_prefix = RECIPEPREFIX_DEFAULT;
+    }
+}
+
+
+/* Free all the storage used in RULE and take it out of the
+   pattern_rules chain.  LASTRULE is the rule whose next pointer
+   points to RULE.  */
+
+static void
+freerule (struct rule *rule, struct rule *lastrule)
+{
+  struct rule *next = rule->next;
+
+  free_dep_chain (rule->deps);
+
+  /* MSVC erroneously warns without a cast here.  */
+  free ((void *)rule->targets);
+  free ((void *)rule->suffixes);
+  free (rule->lens);
+
+  /* We can't free the storage for the commands because there
+     are ways that they could be in more than one place:
+       * If the commands came from a suffix rule, they could also be in
+       the 'struct file's for other suffix rules or plain targets given
+       on the same makefile line.
+       * If two suffixes that together make a two-suffix rule were each
+       given twice in the .SUFFIXES list, and in the proper order, two
+       identical pattern rules would be created and the second one would
+       be discarded here, but both would contain the same 'struct commands'
+       pointer from the 'struct file' for the suffix rule.  */
+
+  free (rule);
+
+  if (pattern_rules == rule)
+    if (lastrule != 0)
+      abort ();
+    else
+      pattern_rules = next;
+  else if (lastrule != 0)
+    lastrule->next = next;
+  if (last_pattern_rule == rule)
+    last_pattern_rule = lastrule;
+}
+
+/* Create a new pattern rule with the targets in the nil-terminated array
+   TARGETS.  TARGET_PERCENTS is an array of pointers to the % in each element
+   of TARGETS.  N is the number of items in the array (not counting the nil
+   element).  The new rule has dependencies DEPS and commands from COMMANDS.
+   It is a terminal rule if TERMINAL is nonzero.  This rule overrides
+   identical rules with different commands if OVERRIDE is nonzero.
+
+   The storage for TARGETS and its elements and TARGET_PERCENTS is used and
+   must not be freed until the rule is destroyed.  */
+
+void
+create_pattern_rule (const char **targets, const char **target_percents,
+                     unsigned short n, int terminal, struct dep *deps,
+                     struct commands *commands, int override)
+{
+  unsigned int i;
+  struct rule *r = xmalloc (sizeof (struct rule));
+
+  r->num = n;
+  r->cmds = commands;
+  r->deps = deps;
+  r->targets = targets;
+  r->suffixes = target_percents;
+  r->lens = xmalloc (n * sizeof (unsigned int));
+
+  for (i = 0; i < n; ++i)
+    {
+      r->lens[i] = (unsigned int) strlen (targets[i]);
+      assert (r->suffixes[i] != NULL);
+      ++r->suffixes[i];
+    }
+
+  if (new_pattern_rule (r, override))
+    r->terminal = terminal ? 1 : 0;
+}
+
+/* Print the data base of rules.  */
+
+static void                     /* Useful to call from gdb.  */
+print_rule (struct rule *r)
+{
+  unsigned int i;
+
+  for (i = 0; i < r->num; ++i)
+    {
+      fputs (r->targets[i], stdout);
+      putchar ((i + 1 == r->num) ? ':' : ' ');
+    }
+  if (r->terminal)
+    putchar (':');
+
+  print_prereqs (r->deps);
+
+  if (r->cmds != 0)
+    print_commands (r->cmds);
+}
+
+void
+print_rule_data_base (void)
+{
+  unsigned int rules, terminal;
+  struct rule *r;
+
+  puts (_("\n# Implicit Rules"));
+
+  rules = terminal = 0;
+  for (r = pattern_rules; r != 0; r = r->next)
+    {
+      ++rules;
+
+      putchar ('\n');
+      print_rule (r);
+
+      if (r->terminal)
+        ++terminal;
+    }
+
+  if (rules == 0)
+    puts (_("\n# No implicit rules."));
+  else
+    {
+      printf (_("\n# %u implicit rules, %u (%.1f%%) terminal."),
+              rules, terminal, (double) terminal / (double) rules * 100.0);
+    }
+
+  if (num_pattern_rules != rules)
+    {
+      /* This can happen if a fatal error was detected while reading the
+         makefiles and thus count_implicit_rule_limits wasn't called yet.  */
+      if (num_pattern_rules != 0)
+        ONN (fatal, NILF, _("BUG: num_pattern_rules is wrong!  %u != %u"),
+             num_pattern_rules, rules);
+    }
+}

src/rule.h

@@ -0,0 +1,57 @@
+/* Definitions for using pattern rules in GNU Make.
+Copyright (C) 1988-2019 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+
+/* Structure used for pattern (implicit) rules.  */
+
+struct rule
+  {
+    struct rule *next;
+    const char **targets;       /* Targets of the rule.  */
+    unsigned int *lens;         /* Lengths of each target.  */
+    const char **suffixes;      /* Suffixes (after '%') of each target.  */
+    struct dep *deps;           /* Dependencies of the rule.  */
+    struct commands *cmds;      /* Commands to execute.  */
+    unsigned short num;         /* Number of targets.  */
+    char terminal;              /* If terminal (double-colon).  */
+    char in_use;                /* If in use by a parent pattern_search.  */
+  };
+
+/* For calling install_pattern_rule.  */
+struct pspec
+  {
+    const char *target, *dep, *commands;
+  };
+
+
+extern struct rule *pattern_rules;
+extern struct rule *last_pattern_rule;
+extern unsigned int num_pattern_rules;
+
+extern unsigned int max_pattern_deps;
+extern unsigned int max_pattern_targets;
+extern size_t max_pattern_dep_length;
+
+extern struct file *suffix_file;
+
+
+void count_implicit_rule_limits (void);
+void convert_to_pattern (void);
+void install_pattern_rule (struct pspec *p, int terminal);
+void create_pattern_rule (const char **targets, const char **target_percents,
+                          unsigned short num, int terminal, struct dep *deps,
+                          struct commands *commands, int override);
+void print_rule_data_base (void);