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100 lines
2.8 KiB
Text
100 lines
2.8 KiB
Text
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# CFLAGS and library paths for FFMPEG
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# taken from Autostar Sandbox, http://autostars.sourceforge.net/
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dnl Usage:
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dnl AM_PATH_FFMPEG([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
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dnl FIXME: version checking does not work currently
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dnl
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dnl Example:
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dnl AM_PATH_FFMPEG(0.4.6, , AC_MSG_ERROR([*** FFMPEG >= 0.4.6 not installed))
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dnl
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dnl Defines FFMPEG_LIBS
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dnl FIXME: should define FFMPEG_VERSION
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dnl
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AC_DEFUN(AM_PATH_FFMPEG,
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[
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dnl allow for specification of a source path (for uninstalled)
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AC_ARG_WITH(ffmpeg-source,
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AC_HELP_STRING([--with-ffmpeg-source=DIR],
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[Directory where FFmpeg source is (optional)]),
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ffmpeg_source="$withval", ffmpeg_source="")
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dnl save CFLAGS and LIBS here
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CFLAGS_save=$CFLAGS
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LIBS_save=$LIBS
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if test "x$ffmpeg_source" != "x"; then
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dnl uninstalled FFmpeg copy
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AC_MSG_NOTICE([Looking for FFmpeg source in $ffmpeg_source])
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CFLAGS="-I$ffmpeg_source/libav -I$ffmpeg_source/libavcodec"
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LIBS="-L$ffmpeg_source/libav -L$ffmpeg_source/libavcodec"
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AC_DEFINE_UNQUOTED(HAVE_FFMPEG_UNINSTALLED, 1,
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[defined if we compile against uninstalled FFmpeg])
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FFMPEG_COMMON_INCLUDE="#include <common.h>"
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else
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FFMPEG_COMMON_INCLUDE="#include <ffmpeg/common.h>"
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fi
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dnl check for libavcodec
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AC_CHECK_LIB(avcodec, avcodec_init, HAVE_FFMPEG=yes, HAVE_FFMPEG=no)
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dnl check for avcodec.h and avformat.h
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if test "x$ffmpeg_source" != "x"; then
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dnl uninstalled
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AC_CHECK_HEADER(avcodec.h, , HAVE_FFMPEG=no, [/* only compile */])
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AC_CHECK_HEADER(avformat.h, , HAVE_FFMPEG=no, [/* only compile */])
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else
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AC_CHECK_HEADER(ffmpeg/avcodec.h, , HAVE_FFMPEG=no)
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AC_CHECK_HEADER(ffmpeg/avformat.h, , HAVE_FFMPEG=no)
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fi
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dnl now check if it's sufficiently new
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AC_LANG_SAVE()
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AC_LANG_C()
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dnl FIXME: we use strcmp, which we know is going to break if ffmpeg ever uses
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dnl two digits for any of their version numbers. It makes the test so much
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dnl easier though so let's ignore that
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AC_TRY_RUN([
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$FFMPEG_COMMON_INCLUDE
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#include <stdio.h>
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#include <string.h>
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int
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main ()
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{
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if (strcmp (FFMPEG_VERSION, "$1") == -1)
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{
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fprintf (stderr,
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"ERROR: your copy of ffmpeg is too old (%s)\n", FFMPEG_VERSION);
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return 1;
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}
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else
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return 0;
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}
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], , HAVE_FFMPEG=no)
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dnl now do the actual "do we have it ?" test
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if test "x$HAVE_FFMPEG" = "xyes"; then
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FFMPEG_LIBS="$LIBS -lavcodec -lavformat"
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FFMPEG_CFLAGS="$CFLAGS"
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AC_MSG_NOTICE(we have ffmpeg)
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dnl execute what we have to because it's found
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ifelse([$2], , :, [$2])
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else
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FFMPEG_LIBS=""
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FFMPEG_CFLAGS=""
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dnl execute what we have to because it's not found
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ifelse([$3], , :, [$3])
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fi
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dnl make variables available
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AC_SUBST(FFMPEG_LIBS)
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AC_SUBST(FFMPEG_CFLAGS)
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AC_SUBST(HAVE_FFMPEG)
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AC_LANG_RESTORE()
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CFLAGS=$CFLAGS_save
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LIBS=$LIBS_save
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])
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