From de9e7e9e4afb956710293ef73f6b53c41e10fcd4 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Tue, 28 Jul 2020 03:50:10 -0700 Subject: [PATCH] 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/ChangeLog: * pkg.m4 (PKG_CHECK_MODULES): Add AC_TRY_LINK to check if $pkg_cv_[]$1[]_LIBS works. --- config/pkg.m4 | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/config/pkg.m4 b/config/pkg.m4 index 13a889017866..45587e97c8b4 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.]) -- 2.47.2