[FFmpeg-devel] [PATCH] restoring binary compatibility with ffmpeg 0.5

[Michael Niedermayer]

On Sun, Jun 06, 2010 at 10:29:25PM +0200, Reimar D?ffinger wrote:
> On Sun, Jun 06, 2010 at 09:38:07PM +0200, Reinhard Tartler wrote:
> > In any case, find below the 'best' fix, that admittedly only works on
> > gnu platforms. Michael, please comment if you prefer the half fix that
> > fixes the issue on gcc/gas platforms (and doesn't regress on others) or
> > bumping major of libavformat.
> 
> How sure are we this is actually correct?
> The cases I could find documented (which only involve one library)
> also require changes to the version script.
> In case it was only one library, something like this:
> Index: libavcodec.v
> ===================================================================
> --- libavcodec.v        (revision 23508)
> +++ libavcodec.v        (working copy)
> @@ -1,3 +1,7 @@
> +LIBAVFORMAT_52 {
> +        global: av_init_packet;
> +};
>  LIBAVCODEC_$MAJOR {
> +        global: av_init_packet;
>          global: *;
> -};
> +} LIBAVFORMAT_52;
> 
> However here we have the problem that this would break e.g. on Solaris,
> since a symbol is not allowed to have multiple versions there.

+LIBAVFORMAT_52 {
+        global: av_init_packet;
+};
 LIBAVCODEC_$MAJOR {
         global: *;
-};
+} LIBAVFORMAT_52;

above does not work?

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

The educated differ from the uneducated as much as the living from the
dead. -- Aristotle 
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