add audiofile.m4

git-svn-id: https://svn.musicpd.org/mpd/trunk@3061 09075e82-0dd4-0310-85a5-a0d7c8717e4f

1 files changed, 179 insertions, 0 deletions

diff --git a/m4/audiofile.m4 b/m4/audiofile.m4
new file mode 100644
index 000000000..86176c5d4
--- /dev/null
+++ b/m4/audiofile.m4
@@ -0,0 +1,179 @@
+# Configure paths for the Audio File Library
+# Bertrand Guiheneuf 98-10-21
+# stolen from esd.m4 in esound :
+# Manish Singh    98-9-30
+# stolen back from Frank Belew
+# stolen from Manish Singh
+# Shamelessly stolen from Owen Taylor
+
+dnl AM_PATH_AUDIOFILE([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
+dnl Test for Audio File Library, and define AUDIOFILE_CFLAGS and AUDIOFILE_LIBS.
+dnl
+AC_DEFUN([AM_PATH_AUDIOFILE],
+[dnl 
+dnl Get compiler flags and libraries from the audiofile-config script.
+dnl
+AC_ARG_WITH(audiofile-prefix,[  --with-audiofile-prefix=PFX   Prefix where Audio File Library is installed (optional)],
+            audiofile_prefix="$withval", audiofile_prefix="")
+AC_ARG_WITH(audiofile-exec-prefix,[  --with-audiofile-exec-prefix=PFX Exec prefix where Audio File Library is installed (optional)],
+            audiofile_exec_prefix="$withval", audiofile_exec_prefix="")
+AC_ARG_ENABLE(audiofiletest, [  --disable-audiofiletest       Do not try to compile and run a test Audio File Library program], , enable_audiofiletest=yes)
+
+  if test x$audiofile_exec_prefix != x ; then
+     audiofile_args="$audiofile_args --exec-prefix=$audiofile_exec_prefix"
+     if test x${AUDIOFILE_CONFIG+set} != xset ; then
+        AUDIOFILE_CONFIG=$audiofile_exec_prefix/bin/audiofile-config
+     fi
+  fi
+  if test x$audiofile_prefix != x ; then
+     audiofile_args="$audiofile_args --prefix=$audiofile_prefix"
+     if test x${AUDIOFILE_CONFIG+set} != xset ; then
+        AUDIOFILE_CONFIG=$audiofile_prefix/bin/audiofile-config
+     fi
+  fi
+
+  AC_PATH_PROG(AUDIOFILE_CONFIG, audiofile-config, no)
+  min_audiofile_version=ifelse([$1], ,0.2.5,$1)
+  AC_MSG_CHECKING(for Audio File Library - version >= $min_audiofile_version)
+  no_audiofile=""
+  if test "$AUDIOFILE_CONFIG" = "no" ; then
+    no_audiofile=yes
+  else
+    AUDIOFILE_LIBS=`$AUDIOFILE_CONFIG $audiofileconf_args --libs`
+    AUDIOFILE_CFLAGS=`$AUDIOFILE_CONFIG $audiofileconf_args --cflags`
+    audiofile_major_version=`$AUDIOFILE_CONFIG $audiofile_args --version | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+    audiofile_minor_version=`$AUDIOFILE_CONFIG $audiofile_args --version | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+    audiofile_micro_version=`$AUDIOFILE_CONFIG $audiofile_config_args --version | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+    if test "x$enable_audiofiletest" = "xyes" ; then
+      AC_LANG_SAVE
+      AC_LANG_C
+      ac_save_CFLAGS="$CFLAGS"
+      ac_save_LIBS="$LIBS"
+      CFLAGS="$CFLAGS $AUDIOFILE_CFLAGS"
+      LIBS="$LIBS $AUDIOFILE_LIBS"
+dnl
+dnl Now check if the installed Audio File Library is sufficiently new. 
+dnl (Also checks the sanity of the results of audiofile-config to some extent.)
+dnl
+      rm -f conf.audiofiletest
+      AC_TRY_RUN([
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <audiofile.h>
+
+char*
+my_strdup (char *str)
+{
+  char *new_str;
+  
+  if (str)
+    {
+      new_str = malloc ((strlen (str) + 1) * sizeof(char));
+      strcpy (new_str, str);
+    }
+  else
+    new_str = NULL;
+  
+  return new_str;
+}
+
+int main ()
+{
+  int major, minor, micro;
+  char *tmp_version;
+
+  system ("touch conf.audiofiletest");
+
+  /* HP/UX 9 (%@#!) writes to sscanf strings */
+  tmp_version = my_strdup("$min_audiofile_version");
+  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
+     printf("%s, bad version string\n", "$min_audiofile_version");
+     exit(1);
+   }
+
+   if (($audiofile_major_version > major) ||
+      (($audiofile_major_version == major) && ($audiofile_minor_version > minor)) ||
+      (($audiofile_major_version == major) && ($audiofile_minor_version == minor) && ($audiofile_micro_version >= micro)))
+    {
+      return 0;
+    }
+  else
+    {
+      printf("\n*** 'audiofile-config --version' returned %d.%d.%d, but the minimum version\n", $audiofile_major_version, $audiofile_minor_version, $audiofile_micro_version);
+      printf("*** of the Audio File Library required is %d.%d.%d. If audiofile-config is correct, then it is\n", major, minor, micro);
+      printf("*** best to upgrade to the required version.\n");
+      printf("*** If audiofile-config was wrong, set the environment variable AUDIOFILE_CONFIG\n");
+      printf("*** to point to the correct copy of audiofile-config, and remove the file\n");
+      printf("*** config.cache before re-running configure\n");
+      return 1;
+    }
+}
+
+],, no_audiofile=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
+       CFLAGS="$ac_save_CFLAGS"
+       LIBS="$ac_save_LIBS"
+       AC_LANG_RESTORE
+     fi
+  fi
+  if test "x$no_audiofile" = x ; then
+     AC_MSG_RESULT(yes)
+     ifelse([$2], , :, [$2])     
+  else
+     AC_MSG_RESULT(no)
+     if test "$AUDIOFILE_CONFIG" = "no" ; then
+       cat <<END
+*** The audiofile-config script installed by the Audio File Library could
+*** not be found.  If the Audio File Library was installed in PREFIX, make
+*** sure PREFIX/bin is in your path, or set the AUDIOFILE_CONFIG
+*** environment variable to the full path to audiofile-config.
+END
+     else
+       if test -f conf.audiofiletest ; then
+        :
+       else
+          echo "*** Could not run Audio File Library test program; checking why..."
+          AC_LANG_SAVE
+          AC_LANG_C
+          CFLAGS="$CFLAGS $AUDIOFILE_CFLAGS"
+          LIBS="$LIBS $AUDIOFILE_LIBS"
+          AC_TRY_LINK([
+#include <stdio.h>
+#include <audiofile.h>
+],      [ return 0; ],
+        [ cat <<END
+*** The test program compiled, but did not run.  This usually means that
+*** the run-time linker is not finding Audio File Library or finding the
+*** wrong version of Audio File Library.
+***
+*** If it is not finding Audio File Library, you'll need to set your
+*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point
+*** to the installed location.  Also, make sure you have run ldconfig if
+*** that is required on your system.
+***
+*** If you have an old version installed, it is best to remove it, although
+*** you may also be able to get things to work by modifying
+*** LD_LIBRARY_PATH.
+END
+        ],
+        [ echo "*** The test program failed to compile or link. See the file config.log"
+          echo "*** for the exact error that occured. This usually means the Audio File"
+          echo "*** Library was incorrectly installed or that you have moved the Audio"
+          echo "*** File Library since it was installed. In the latter case, you may want"
+          echo "*** to edit the audiofile-config script: $AUDIOFILE_CONFIG" ])
+          CFLAGS="$ac_save_CFLAGS"
+          LIBS="$ac_save_LIBS"
+          AC_LANG_RESTORE
+       fi
+     fi
+     AUDIOFILE_CFLAGS=""
+     AUDIOFILE_LIBS=""
+     ifelse([$3], , :, [$3])
+  fi
+  AC_SUBST(AUDIOFILE_CFLAGS)
+  AC_SUBST(AUDIOFILE_LIBS)
+  rm -f conf.audiofiletest
+])