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PKG_CHECK_MODULES: Check if $pkg_cv_[]$1[]_LIBS works

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It is quite normal to have headers without library on multilib OSes.
Add AC_TRY_LINK to PKG_CHECK_MODULES to check if $pkg_cv_[]$1[]_LIBS
works.

config/

	PR binutils/26301
	* pkg.m4 (PKG_CHECK_MODULES): Add AC_TRY_LINK to check if
	$pkg_cv_[]$1[]_LIBS works.

binutils/

	PR binutils/26301
	* configure: Regenerated.

gdb/

	PR binutils/26301
	* configure: Regenerated.
This commit is contained in:
H.J. Lu
2020-07-28 03:50:10 -07:00
parent 1a02d6b0ff
commit d70f978b44
7 changed files with 71 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
config/ChangeLog
View File

@ -1,3 +1,14 @@
2020-07-28 H.J. Lu <hongjiu.lu@intel.com>
PR binutils/26301
* pkg.m4 (PKG_CHECK_MODULES): Add AC_TRY_LINK to check if
$pkg_cv_[]$1[]_LIBS works.
2020-07-24 Aaron Merey <amerey@redhat.com>
* debuginfod.m4: use PKG_CHECK_MODULES.
* pkg.m4: New file.
2020-07-04 Nick Clifton <nickc@redhat.com>
Binutils 2.35 branch created.

6
config/pkg.m4
View File

@ -147,6 +147,12 @@ AC_MSG_CHECKING([for $2])
_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
_PKG_CONFIG([$1][_LIBS], [libs], [$2])
dnl Check whether $pkg_cv_[]$1[]_LIBS works.
pkg_save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS $pkg_cv_[]$1[]_LIBS"
AC_TRY_LINK([],[return 0;], [pkg_failed=no], [pkg_failed=yes])
LDFLAGS=$pkg_save_LDFLAGS
m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
and $1[]_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.])