From 2aba563bd077fda94fb9c2c33002ee0ac119b345 Mon Sep 17 00:00:00 2001 From: Thomas De Schampheleire Date: Fri, 13 Apr 2018 09:13:46 +0200 Subject: [PATCH] alsa-lib: conditionally enable libdl in AM_PATH_ALSA m4 macro MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The AM_PATH_ALSA macro in utils/alsa.m4 unconditionally uses -ldl. This breaks compilation of alsa-utils (and probably other packages using this macro) for targets that do not support dynamic loading, such as for Blackfin FLAT binaries. This patch updates the macro to check if dlopen is available, and use that result to conditionally add -ldl to the list of libraries. Signed-off-by: Thomas De Schampheleire [Jörg: update for 1.1.6] Signed-off-by: Jörg Krause --- utils/alsa.m4 | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/utils/alsa.m4 b/utils/alsa.m4 index e12310df..a5c5a292 100644 --- a/utils/alsa.m4 +++ b/utils/alsa.m4 @@ -44,6 +44,8 @@ if test "$alsa_inc_prefix" != "" ; then fi AC_MSG_RESULT($ALSA_CFLAGS) +AC_CHECK_LIB(c, dlopen, LIBDL="", [AC_CHECK_LIB(dl, dlopen, LIBDL="-ldl")]) + dnl add any special lib dirs AC_MSG_CHECKING(for ALSA LDFLAGS) if test "$alsa_prefix" != "" ; then @@ -52,7 +54,7 @@ if test "$alsa_prefix" != "" ; then fi dnl add the alsa library -ALSA_LIBS="$ALSA_LIBS -lasound -lm -ldl -lpthread" +ALSA_LIBS="$ALSA_LIBS -lasound -lm $LIBDL -lpthread" LIBS="$ALSA_LIBS $LIBS" AC_MSG_RESULT($ALSA_LIBS) -- 2.14.3