[FFmpeg-devel] [PATCH] restoring binary compatibility with ffmpeg 0.5
Sun Jun 6 22:37:35 CEST 2010
On Sun, Jun 06, 2010 at 09:03:55PM +0200, Reinhard Tartler wrote:
> On So, Jun 06, 2010 at 20:01:44 (CEST), M?ns Rullg?rd wrote:
> > Reinhard Tartler <siretart at tauware.de> writes:
> >> On So, Jun 06, 2010 at 17:59:48 (CEST), M?ns Rullg?rd wrote:
> >>> Reinhard Tartler <siretart at tauware.de> writes:
> >>>> +__asm__(".symver ff_av_destruct_packet_nofree,av_destruct_packet_nofree at LIBAVFORMAT_52");
> >>> This will break with non-gcc compilers and/or non-gnu assemblers, both
> >>> of which we support.
> >> I don't think so. I've changed the configure script so that this part
> >> gets only compiled if the toolchain actually supports versioning
> >> scripts. On non-gnu assemblers/compilers, this part doesn't get compiled
> >> at all.
> > You are mistaken. The configure test checks whether the _linker_
> > supports version scripts. The code above relies on the _compiler_
> > supporting this particular inline asm syntax, which some supported
> > compilers do not, and on the _assembler_ supporting the .symver
> > directive, which again some supported assemblers do not.
> > Can this be done in the version script instead?
> no, it cannot.
whats the problem with adding the proper @LIBAVFORMAT_52? versioning to th
affected symbols in lavc?
> This .symver directive is a gnu extension to the sun
besides whats the status of the linker fixes, has someone pushed them
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