Add symbol versioning for shared libraries

Based on patch by Reinhard Tartler <siretart tauware de>

Originally committed as revision 21236 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 4 insertions, 0 deletions

diff --git a/libavutil/libavutil.v b/libavutil/libavutil.v
new file mode 100644
index 0000000000..ec52f2be7a
--- /dev/null
+++ b/libavutil/libavutil.v
@@ -0,0 +1,4 @@
+LIBAVUTIL_$MAJOR {
+        global: av_*; ff_*; avutil_*;
+        local: *;
+};