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.
This commit is contained in:
H.J. Lu
2020-07-28 03:50:10 -07:00
committed by Arsen Arsenović
parent 9fc0ae6033
commit de9e7e9e4a

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.])