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authorH.J. Lu <hjl.tools@gmail.com>2020-07-28 03:50:10 -0700
committerH.J. Lu <hjl.tools@gmail.com>2020-07-28 03:56:34 -0700
commitd70f978b44aafc22d87c0e72d0875008c3d9e311 (patch)
treed53f7d66d27b619f747638e4088006abdc923197 /config/pkg.m4
parent1a02d6b0ff80048df106cbb776a550278f8c9d9c (diff)
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PKG_CHECK_MODULES: Check if $pkg_cv_[]$1[]_LIBS works
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.
Diffstat (limited to 'config/pkg.m4')
-rw-r--r--config/pkg.m46
1 files changed, 6 insertions, 0 deletions
diff --git a/config/pkg.m4 b/config/pkg.m4
index 13a8890..45587e9 100644
--- a/config/pkg.m4
+++ b/config/pkg.m4
@@ -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.])