| From 2aba563bd077fda94fb9c2c33002ee0ac119b345 Mon Sep 17 00:00:00 2001 |
| From: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com> |
| Date: Fri, 13 Apr 2018 09:13:46 +0200 |
| Subject: [PATCH] alsa-lib: conditionally enable libdl in AM_PATH_ALSA m4 macro |
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| |
| 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 <thomas.de.schampheleire@gmail.com> |
| [Jörg: update for 1.1.6] |
| Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks> |
| --- |
| 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 |
| |
