add non-standard m4's to mpd svn repository

git-svn-id: https://svn.musicpd.org/mpd/trunk@2655 09075e82-0dd4-0310-85a5-a0d7c8717e4f

m4/vorbis.m4

@@ -0,0 +1,122 @@
+# Configure paths for libvorbis
+# Jack Moffitt <jack@icecast.org> 10-21-2000
+# Shamelessly stolen from Owen Taylor and Manish Singh
+# thomasvs added check for vorbis_bitrate_addblock which is new in rc3
+
+dnl XIPH_PATH_VORBIS([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
+dnl Test for libvorbis, and define VORBIS_CFLAGS and VORBIS_LIBS
+dnl
+AC_DEFUN(XIPH_PATH_VORBIS,
+[dnl 
+dnl Get the cflags and libraries
+dnl
+AC_ARG_WITH(vorbis,[  --with-vorbis=PFX   Prefix where libvorbis is installed (optional)], vorbis_prefix="$withval", vorbis_prefix="")
+AC_ARG_WITH(vorbis-libraries,[  --with-vorbis-libraries=DIR   Directory where libvorbis library is installed (optional)], vorbis_libraries="$withval", vorbis_libraries="")
+AC_ARG_WITH(vorbis-includes,[  --with-vorbis-includes=DIR   Directory where libvorbis header files are installed (optional)], vorbis_includes="$withval", vorbis_includes="")
+AC_ARG_ENABLE(vorbistest, [  --disable-vorbistest       Do not try to compile and run a test Vorbis program],, enable_vorbistest=yes)
+
+  if test "x$vorbis_libraries" != "x" ; then
+    VORBIS_LIBS="-L$vorbis_libraries"
+  elif test "x$vorbis_prefix" != "x" ; then
+    VORBIS_LIBS="-L$vorbis_prefix/lib"
+  elif test "x$prefix" != "xNONE"; then
+    VORBIS_LIBS="-L$prefix/lib"
+  fi
+
+  VORBIS_LIBS="$VORBIS_LIBS -lvorbis -lm"
+  VORBISFILE_LIBS="-lvorbisfile"
+  VORBISENC_LIBS="-lvorbisenc"
+
+  if test "x$vorbis_includes" != "x" ; then
+    VORBIS_CFLAGS="-I$vorbis_includes"
+  elif test "x$vorbis_prefix" != "x" ; then
+    VORBIS_CFLAGS="-I$vorbis_prefix/include"
+  elif test "x$prefix" != "xNONE"; then
+    VORBIS_CFLAGS="-I$prefix/include"
+  fi
+
+
+  AC_MSG_CHECKING(for Vorbis)
+  no_vorbis=""
+
+
+  if test "x$enable_vorbistest" = "xyes" ; then
+    ac_save_CFLAGS="$CFLAGS"
+    ac_save_LIBS="$LIBS"
+    CFLAGS="$CFLAGS $VORBIS_CFLAGS $OGG_CFLAGS"
+    LIBS="$LIBS $VORBIS_LIBS $VORBISENC_LIBS $OGG_LIBS"
+dnl
+dnl Now check if the installed Vorbis is sufficiently new.
+dnl
+      rm -f conf.vorbistest
+      AC_TRY_RUN([
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <vorbis/codec.h>
+#include <vorbis/vorbisenc.h>
+
+int main ()
+{
+    vorbis_block 	vb;
+    vorbis_dsp_state	vd;
+    vorbis_info		vi;
+
+    vorbis_info_init (&vi);
+    vorbis_encode_init (&vi, 2, 44100, -1, 128000, -1);
+    vorbis_analysis_init (&vd, &vi);
+    vorbis_block_init (&vd, &vb);
+    /* this function was added in 1.0rc3, so this is what we're testing for */
+    vorbis_bitrate_addblock (&vb);
+
+    system("touch conf.vorbistest");
+    return 0;
+}
+
+],, no_vorbis=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
+       CFLAGS="$ac_save_CFLAGS"
+       LIBS="$ac_save_LIBS"
+  fi
+
+  if test "x$no_vorbis" = "x" ; then
+     AC_MSG_RESULT(yes)
+     ifelse([$1], , :, [$1])     
+  else
+     AC_MSG_RESULT(no)
+     if test -f conf.vorbistest ; then
+       :
+     else
+       echo "*** Could not run Vorbis test program, checking why..."
+       CFLAGS="$CFLAGS $VORBIS_CFLAGS"
+       LIBS="$LIBS $VORBIS_LIBS $OGG_LIBS"
+       AC_TRY_LINK([
+#include <stdio.h>
+#include <vorbis/codec.h>
+],     [ return 0; ],
+       [ echo "*** The test program compiled, but did not run. This usually means"
+       echo "*** that the run-time linker is not finding Vorbis or finding the wrong"
+       echo "*** version of Vorbis. If it is not finding Vorbis, you'll need to set your"
+       echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
+       echo "*** to the installed location  Also, make sure you have run ldconfig if that"
+       echo "*** is required on your system"
+       echo "***"
+       echo "*** If you have an old version installed, it is best to remove it, although"
+       echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
+       [ echo "*** The test program failed to compile or link. See the file config.log for the"
+       echo "*** exact error that occured. This usually means Vorbis was incorrectly installed"
+       echo "*** or that you have moved Vorbis since it was installed." ])
+       CFLAGS="$ac_save_CFLAGS"
+       LIBS="$ac_save_LIBS"
+     fi
+     VORBIS_CFLAGS=""
+     VORBIS_LIBS=""
+     VORBISFILE_LIBS=""
+     VORBISENC_LIBS=""
+     ifelse([$2], , :, [$2])
+  fi
+  AC_SUBST(VORBIS_CFLAGS)
+  AC_SUBST(VORBIS_LIBS)
+  AC_SUBST(VORBISFILE_LIBS)
+  AC_SUBST(VORBISENC_LIBS)
+  rm -f conf.vorbistest
+])