[FFmpeg-devel] [PATCH] Make mmx2 dependent on mmx/ssse3 dependent on mmx2
Fri Mar 21 11:54:27 CET 2008
On 21/03/2008, Panagiotis Issaris <takis.issaris at uhasselt.be> wrote:
> First of all, I'm not sure about this patch... The thing is, I had
> expected the configure script to disable mmx2 and ssse3 too when
> disabling mmx, which it currently doesn't do. But, that's just because
> I'm not aware of any machines implementing mmx2 but not mmx. Anyway,
> attached patch makes mmx2 dependent on mmx, likewise for ssse3 which
> becomes dependent on mmx2. So, with the attached patch --disable-mmx
> disables them all.
What if one only wants to disable MMX but retain MMX2 and SSSE3? I
think they should only disable the instruction set to which they refer
and maybe add another option to disable all SIMD optimisations.
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