[SCM] libav/experimental: add FF_API_SYMVER define to disable symver compatibility functions

[siretart at users.alioth.debian.org]

The following commit has been merged in the experimental branch:
commit 13728334e8ac3dde15ef23a6a4aa935b3c92fa64
Author: Aurelien Jacobs <aurel at gnuage.org>
Date:   Fri Oct 15 18:25:01 2010 +0000

    add FF_API_SYMVER define to disable symver compatibility functions
    
    Originally committed as revision 25491 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 0ab1156..2b7d166 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -81,6 +81,9 @@
 #ifndef FF_API_FIRST_FORMAT
 #define FF_API_FIRST_FORMAT            (LIBAVFORMAT_VERSION_MAJOR < 53)
 #endif
+#ifndef FF_API_SYMVER
+#define FF_API_SYMVER                  (LIBAVFORMAT_VERSION_MAJOR < 53)
+#endif
 
 /**
  * I return the LIBAVFORMAT_VERSION_INT constant.  You got
diff --git a/libavformat/utils.c b/libavformat/utils.c
index be475cc..289b91c 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -290,7 +290,7 @@ AVInputFormat *av_find_input_format(const char *short_name)
     return NULL;
 }
 
-#if LIBAVFORMAT_VERSION_MAJOR < 53 && CONFIG_SHARED && HAVE_SYMVER
+#if FF_API_SYMVER && CONFIG_SHARED && HAVE_SYMVER
 FF_SYMVER(void, av_destruct_packet_nofree, (AVPacket *pkt), "LIBAVFORMAT_52")
 {
     av_destruct_packet_nofree(pkt);

-- 
Libav/FFmpeg packaging