alsa.m4: another fix to not link all binaries with -latopology

Preserve LIBS when the -latopology is tested. It's added later.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>

diff --git a/utils/alsa.m4 b/utils/alsa.m4
index 320e4336a925bc7e2ebe4c585d7ebc0371ba7234..04cc8808902e561d1c507765c4ba6881f56e7ede 100644 (file)
--- a/utils/alsa.m4
+++ b/utils/alsa.m4
@@ -160,11 +160,13 @@ AC_CHECK_LIB([asound], [snd_ctl_open],,
 )
 if test "x$enable_atopology" = "xyes"; then
 alsa_topology_found=yes
+alsa_save_LIBS2="$LIBS"
 AC_CHECK_LIB([atopology], [snd_tplg_new],,
        [ifelse([$3], , [AC_MSG_ERROR(No linkable libatopology was found.)])
         alsa_topology_found=no,
 ]
 )
+LIBS="$alsa_save_LIBS2"
 fi
 else
 if test "x$enable_atopology" = "xyes"; then