Added shout m4

Original commit message from CVS:
Added shout m4

m4/gst-shout2.m4

@@ -0,0 +1,99 @@
+# Configure paths for libshout
+# Jack Moffitt <jack@icecast.org> 08-06-2001
+# Shamelessly stolen from Owen Taylor and Manish Singh
+
+dnl AM_PATH_SHOUT2([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
+dnl Test for libshout, and define SHOUT2_CFLAGS and SHOUT2_LIBS
+dnl
+AC_DEFUN(AM_PATH_SHOUT2,
+[dnl 
+dnl Get the cflags and libraries
+dnl
+AC_ARG_WITH(shout-prefix,[  --with-shout2-prefix=PFX   Prefix where libshout2 is installed (optional)], shout2_prefix="$withval", shout2_prefix="")
+AC_ARG_ENABLE(shout2test, [  --disable-shout2test       Do not try to compile and run a test Shout2 program],, enable_shout2test=yes)
+
+  if test "x$shout2_prefix" != "xNONE" ; then
+    shout2_args="$shout2_args --prefix=$shout2_prefix"
+    SHOUT2_CFLAGS="-I$shout2_prefix/include"
+    SHOUT2_LIBS="-L$shout2_prefix/lib"
+  elif test "$prefix" != ""; then
+    shout2_args="$shout2_args --prefix=$prefix"
+    SHOUT2_CFLAGS="-I$prefix/include"
+    SHOUT2_LIBS="-L$prefix/lib"
+  fi
+
+  SHOUT2_LIBS="$SHOUT2_LIBS -lshout -lpthread"
+
+  case $host in
+  *-*-solaris*)
+  	SHOUT2_LIBS="$SHOUT2_LIBS -lnsl -lsocket -lresolv"
+  esac
+
+  AC_MSG_CHECKING(for Shout2)
+  no_shout2=""
+
+  if test "x$enable_shout2test" = "xyes" ; then
+    ac_save_CFLAGS="$CFLAGS"
+    ac_save_LIBS="$LIBS"
+    CFLAGS="$CFLAGS $SHOUT2_CFLAGS $OGG_CFLAGS $VORBIS_CFLAGS"
+    LIBS="$LIBS $SHOUT2_LIBS $OGG_LIBS $VORBIS_LIBS"
+dnl
+dnl Now check if the installed Shout2 is sufficiently new.
+dnl
+      rm -f conf.shout2test
+      AC_TRY_RUN([
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <shout/shout.h>
+
+int main ()
+{
+  system("touch conf.shout2test");
+  return 0;
+}
+
+],, no_shout2=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
+       CFLAGS="$ac_save_CFLAGS"
+       LIBS="$ac_save_LIBS"
+  fi
+
+  if test "x$no_shout2" = "x" ; then
+     AC_MSG_RESULT(yes)
+     ifelse([$1], , :, [$1])     
+  else
+     AC_MSG_RESULT(no)
+     if test -f conf.shout2test ; then
+       :
+     else
+       echo "*** Could not run Shout2 test program, checking why..."
+       CFLAGS="$CFLAGS $SHOUT2_CFLAGS $OGG_CFLAGS $VORBIS_CFLAGS"
+       LIBS="$LIBS $SHOUT2_LIBS $OGG_LIBS $VORBIS_LIBS"
+       AC_TRY_LINK([
+#include <stdio.h>
+#include <shout/shout.h>
+],     [ return 0; ],
+       [ echo "*** The test program compiled, but did not run. This usually means"
+       echo "*** that the run-time linker is not finding Shout2 or finding the wrong"
+       echo "*** version of Shout2. If it is not finding Shout2, you'll need to set your"
+       echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
+       echo "*** to the installed location  Also, make sure you have run ldconfig if that"
+       echo "*** is required on your system"
+       echo "***"
+       echo "*** If you have an old version installed, it is best to remove it, although"
+       echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
+       [ echo "*** The test program failed to compile or link. See the file config.log for the"
+       echo "*** exact error that occured. This usually means Shout2 was incorrectly installed"
+       echo "*** or that you have moved Shout2 since it was installed. In the latter case, you"
+       echo "*** may want to edit the shout-config script: $SHOUT2_CONFIG" ])
+       CFLAGS="$ac_save_CFLAGS"
+       LIBS="$ac_save_LIBS"
+     fi
+     SHOUT2_CFLAGS=""
+     SHOUT2_LIBS=""
+     ifelse([$2], , :, [$2])
+  fi
+  AC_SUBST(SHOUT2_CFLAGS)
+  AC_SUBST(SHOUT2_LIBS)
+  rm -f conf.shout2test
+])