Check for mktemp.

before calling notice_finished_file.
(notice_finished_file): Touch only when FILE->update_status is zero.
(remake_file): Set FILE->update_status to zero after not calling
execute_file_command and deciding to touch instead.

acconfig.h

@@ -12,3 +12,6 @@
 
 /* Define this if you have the `union wait' type in <sys/wait.h>.  */
 #undef HAVE_UNION_WAIT
+
+/* Define this if the POSIX.1 call `sysconf (_SC_OPEN_MAX)' works properly.  */
+#undef HAVE_SYSCONF_OPEN_MAX

compatMakefile

@@ -249,6 +249,7 @@ distclean: clean glob-realclean
 	-rm -f make.?? make.??s make.log make.toc make.*aux
 	-rm -f loadavg.c
 realclean: distclean
+	-rm -f make.info*
 mostlyclean: clean
 
 .PHONY: glob-clean glob-realclean

configure.in

@@ -43,7 +43,7 @@ changequote([,])dnl
 fi
 AC_MSG_RESULT($ac_cv_check_symbol_$1)])dnl
 
-AC_CHECK_FUNCS(getdtablesize psignal \
+AC_CHECK_FUNCS(getdtablesize psignal mktemp \
 	       dup2 getcwd sigsetmask getgroups setlinebuf \
 	       seteuid setegid setreuid setregid strerror)
 AC_CHECK_SYMBOL(sys_siglist)
@@ -54,6 +54,17 @@ AC_FUNC_SETVBUF_REVERSED
 AC_FUNC_GETLOADAVG
 AC_FUNC_STRCOLL
 
+if test $ac_cv_func_getdtablesize = no; then
+  AC_MSG_CHECKING(for sysconf (_SC_OPEN_MAX))
+  AC_CACHE_VAL(make_cv_sysconf_open_max, [dnl
+  AC_TRY_LINK([#include <unistd.h>], [int max = sysconf (_SC_OPEN_MAX);],
+	      [make_cv_sysconf_open_max=yes], [make_cv_sysconf_open_max=no])])
+  if test $make_cv_sysconf_open_max = yes; then
+    AC_DEFINE(HAVE_SYSCONF_OPEN_MAX)
+  fi
+  AC_MSG_RESULT($make_cv_sysconf_open_max)
+fi
+
 # Check out the wait reality.
 AC_CHECK_HEADERS(sys/wait.h) AC_CHECK_FUNCS(waitpid wait3)
 AC_MSG_CHECKING(for union wait)

job.c

@@ -122,6 +122,9 @@ extern int setgid (), getgid ();
 #ifdef HAVE_GETDTABLESIZE
 extern int getdtablesize ();
 #else
+#ifdef HAVE_SYSCONF_OPEN_MAX
+#define getdtablesize()		((int) sysconf (_SC_OPEN_MAX))
+#else
 #include <sys/param.h>
 #define getdtablesize() NOFILE
 #if !defined (NOFILE) && defined (NOFILES_MAX)
@@ -130,6 +133,7 @@ extern int getdtablesize ();
 #endif
 #endif
 #endif
+#endif
 
 extern int getloadavg ();
 extern int start_remote_job_p ();

main.c

@@ -397,6 +397,15 @@ enter_command_line_file (name)
   return enter_file (savestring (name, strlen (name)));
 }
 
+/* Toggle -d on receipt of SIGUSR1.  */
+
+static RETSIGTYPE
+debug_signal_handler (sig)
+     int sig;
+{
+  debug_flag = ! debug_flag;
+}
+
 int
 main (argc, argv, envp)
      int argc;
@@ -691,11 +700,16 @@ main (argc, argv, envp)
 	    /* This makefile is standard input.  Since we may re-exec
 	       and thus re-read the makefiles, we read standard input
 	       into a temporary file and read from that.  */
-	    static char name[] = "/tmp/GmXXXXXX";
 	    FILE *outfile;
 
 	    /* Make a unique filename.  */
+#ifdef HAVE_MKTEMP
+	    static char name[] = "/tmp/GmXXXXXX";
 	    (void) mktemp (name);
+#else
+	    static char name[L_tmpnam];
+	    (void) tmpnam ();
+#endif
 
 	    outfile = fopen (name, "w");
 	    if (outfile == 0)
@@ -744,6 +758,11 @@ main (argc, argv, envp)
   (void) signal (SIGCLD, child_handler);
 #endif
 
+  /* Let the user send us SIGUSR1 to toggle the -d flag during the run.  */
+#ifdef SIGUSR1
+  (void) signal (SIGUSR1, debug_signal_handler);
+#endif
+
   /* Define the initial list of suffixes for old-style rules.  */
 
   set_default_suffixes ();

remake.c

@@ -1,5 +1,5 @@
 /* Basic dependency engine for GNU Make.
-Copyright (C) 1988, 89, 90, 91, 92, 93, 94 Free Software Foundation, Inc.
+Copyright (C) 1988, 89, 90, 91, 92, 93, 94, 1995 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify
@@ -556,7 +556,6 @@ update_file_1 (file, depth)
   if (!must_make)
     {
       DEBUGPR ("No need to remake target `%s'.\n");
-      file->update_status = 0;
       notice_finished_file (file);
       return 0;
     }
@@ -605,12 +604,12 @@ notice_finished_file (file)
 
   if (touch_flag
       /* The update status will be:
-	 	-1	if no commands were run;
-		0	if some commands (+ or ${MAKE}) were run and won;
+	 	-1	if this target was not remade;
+		0	if 0 or more commands (+ or ${MAKE}) were run and won;
 		1	if some commands were run and lost.
-	 The only time we don't want to touch the target is if
-	 it had some recursive commands, and they lost.  */
-      && file->update_status != 1)
+	 We touch the target if it has commands which either were not run
+	 or won when they ran (i.e. status is 0).  */
+      && file->update_status == 0)
     {
       if (file->cmds != 0 && file->cmds->any_recurse)
 	{
@@ -854,6 +853,9 @@ remake_file (file)
 	  execute_file_commands (file);
 	  return;
 	}
+      else
+	/* This tells notice_finished_file it is ok to touch the file.  */
+	file->update_status = 0;
     }
 
   /* This does the touching under -t.  */