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- alsa-lib: conditionally enable libdl in AM_PATH_ALSA m4 macro
- 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>
- ---
- diff --git a/utils/alsa.m4 b/utils/alsa.m4
- --- 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)
-
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