Simplify alsa checking: we can use the standard AM_PATH_ALSA macro to check that we don't have alsa 0.9.x: we just ne...

Original commit message from CVS:
Simplify alsa checking: we can use the standard AM_PATH_ALSA macro to
check that we don't have alsa 0.9.x: we just need to specify something
for ACTION_NOT_FOUND to override the default AC_MSG_ERROR behaviour, so
I've put a colon for ACTION_NOT_FOUND. ;-)
Also, update the alsa macro in acinclude with the latest from the alsa
project CVS.

acinclude.m4

@@ -53,6 +53,9 @@ fi
 
 dnl add the alsa library
 ALSA_LIBS="$ALSA_LIBS -lasound -lm -ldl"
+LIBS=`echo $LIBS | sed 's/-lm//'`
+LIBS=`echo $LIBS | sed 's/-ldl//'`
+LIBS=`echo $LIBS | sed 's/  //'`
 LIBS="$ALSA_LIBS $LIBS"
 AC_MSG_RESULT($ALSA_LIBS)
 
@@ -122,6 +125,9 @@ AC_CHECK_LIB([asound], [snd_defaults_card],,
 
 if test "x$alsa_found" = "xyes" ; then
    ifelse([$2], , :, [$2])
+   LIBS=`echo $LIBS | sed 's/-lasound//g'`
+   LIBS=`echo $LIBS | sed 's/  //'`
+   LIBS="-lasound $LIBS"
 fi
 if test "x$alsa_found" = "xno" ; then
    ifelse([$3], , :, [$3])

configure.ac

@@ -254,37 +254,13 @@ dnl AM_PATH_XMMS(0.1.0, HAVE_LIBXMMS=yes, HAVE_LIBXMMS=no)
 dnl Check for libasound
 alsa_save_LIBS=$LIBS
 alsa_save_CFLAGS=$CFLAGS
-AM_PATH_ALSA(0.5.0, HAVE_LIBASOUND=yes,
+AM_PATH_ALSA(0.5.0, HAVE_LIBASOUND=yes, HAVE_LIBASOUND=no)
+AM_PATH_ALSA(0.9.0,
   HAVE_LIBASOUND=no
-  AC_MSG_WARN(
+  AC_MSG_WARN(Alsa 0.9.x not yet supported.
-***** NOTE: These plugins won't be built: gstalsa
-))
-if test x$HAVE_LIBASOUND = xyes;then
-  AC_MSG_CHECKING(alsa libs == 0.5.x, not 0.9.x)
-  AC_TRY_COMPILE([
-#include <sys/asoundlib.h>
-], [
-#if !defined(SND_LIB_MINOR) && defined(SOUNDLIB_VERSION_MINOR)
-#define SND_LIB_MINOR SOUNDLIB_VERSION_MINOR
-#endif
-
-void main(void) {
-  // succeed only if it's 0.5.x
-#if (SND_LIB_MINOR == 5)
-  exit(0);
-#else
-#error not 0.5.x
-#endif
-
-  exit(1);
-}
-],AC_MSG_RESULT(0.5.x),
-  AC_MSG_RESULT(no)
-  AC_MSG_WARN(
 ***** NOTE: These plugins won't be built: gstalsa
 )
-  HAVE_LIBASOUND=no)
+  ,:)
-fi
 
 LIBS=$alsa_save_LIBS
 CFLAGS=$alsa_save_CFLAGS

configure.in

@@ -251,37 +251,13 @@ dnl AM_PATH_XMMS(0.1.0, HAVE_LIBXMMS=yes, HAVE_LIBXMMS=no)
 dnl Check for libasound
 alsa_save_LIBS=$LIBS
 alsa_save_CFLAGS=$CFLAGS
-AM_PATH_ALSA(0.5.0, HAVE_LIBASOUND=yes,
+AM_PATH_ALSA(0.5.0, HAVE_LIBASOUND=yes, HAVE_LIBASOUND=no)
+AM_PATH_ALSA(0.9.0,
   HAVE_LIBASOUND=no
-  AC_MSG_WARN(
+  AC_MSG_WARN(Alsa 0.9.x not yet supported.
-***** NOTE: These plugins won't be built: gstalsa
-))
-if test x$HAVE_LIBASOUND = xyes;then
-  AC_MSG_CHECKING(alsa libs == 0.5.x, not 0.9.x)
-  AC_TRY_COMPILE([
-#include <sys/asoundlib.h>
-], [
-#if !defined(SND_LIB_MINOR) && defined(SOUNDLIB_VERSION_MINOR)
-#define SND_LIB_MINOR SOUNDLIB_VERSION_MINOR
-#endif
-
-void main(void) {
-  // succeed only if it's 0.5.x
-#if (SND_LIB_MINOR == 5)
-    exit(0);
-#else
-#error not 0.5.x
-#endif
-
-  exit(1);
-}
-],AC_MSG_RESULT(0.5.x),
-  AC_MSG_RESULT(no)
-  AC_MSG_WARN(
 ***** NOTE: These plugins won't be built: gstalsa
 )
-  HAVE_LIBASOUND=no)
+  ,:)
-fi
 
 LIBS=$alsa_save_LIBS
 CFLAGS=$alsa_save_CFLAGS