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Implement linker-compatible library search.

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This commit is contained in:
Boris Kolpackov
2009-11-12 16:42:36 +00:00
parent 5f188b39a4
commit fe43fa9de3
9 changed files with 193 additions and 53 deletions
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11
doc/make.texi
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@@ -2425,17 +2425,15 @@ file, and the @emph{file name} of a library generally looks like
@file{lib@var{name}.a}, not like @samp{-l@var{name}}.)@refill
When a prerequisite's name has the form @samp{-l@var{name}}, @code{make}
handles it specially by searching for the file @file{lib@var{name}.so} in
the current directory, in directories specified by matching @code{vpath}
handles it specially by searching for the file @file{lib@var{name}.so},
and, if it is not found, for the file @file{lib@var{name}.a} in the current
directory, in directories specified by matching @code{vpath}
search paths and the @code{VPATH} search path, and then in the
directories @file{/lib}, @file{/usr/lib}, and @file{@var{prefix}/lib}
(normally @file{/usr/local/lib}, but MS-DOS/MS-Windows versions of
@code{make} behave as if @var{prefix} is defined to be the root of the
DJGPP installation tree).
If that file is not found, then the file @file{lib@var{name}.a} is
searched for, in the same directories as above.
For example, if there is a @file{/usr/lib/libcurses.a} library on your
system (and no @file{/usr/lib/libcurses.so} file), then
@@ -2457,8 +2455,7 @@ via the @code{.LIBPATTERNS} variable. Each word in the value of this
variable is a pattern string. When a prerequisite like
@samp{-l@var{name}} is seen, @code{make} will replace the percent in
each pattern in the list with @var{name} and perform the above directory
searches using that library filename. If no library is found, the next
word in the list will be used.
searches using each library filename.
The default value for @code{.LIBPATTERNS} is @samp{lib%.so lib%.a},
which provides the default behavior described above.