[Ffmpeg-devel] 64-bit safety

[Christian Bienia]

Hi,

> > The UltraSPARC-T1 is a 64-bit CPU, but by default, gcc compiles for
> > 32-bit on SPARC, unless you specify -m64 (Sun Studio is similar).
> 
> FFmpeg has compiled and run without problems on Alpha, which is a pure
> 64-bit CPU, for years.  I hardly use ffmpeg on the Alpha nowadays, but
> I do compile and run some tests every now and then to make sure it
> still works.
> 
> The assembler warnings on x86-64 are probably from inline assembly
> bits that are not compiled for non-x86 targets.

Most of those errors are in libavformat. About 4 or 5 files are
affected. Unfortunately those files don't compile at all on x86_64
without "-m32".