[FFmpeg-devel] [PATCH] Set -mfpmath=sse for cpus that support it

Vitor Sessak vitor1001
Thu Aug 27 16:47:48 CEST 2009

Reimar D?ffinger wrote:
> On Thu, Aug 27, 2009 at 04:01:53PM +0200, Vitor Sessak wrote:
>> M?ns Rullg?rd wrote:
>>> You can't use check_cflags there.  Is there any reason to not attempt
>>> using this flag with --cpu values?  I imagine a simple check_cflags
>>> line together with the other x86 stuff (ebx checks etc) should be
>>> enough.
>> I can't just call "check_cflags -mfpmath=sse" for every x86 CPU because 
>> GCC does not fail with "-march=386 -mfpmath=sse", it gives a warning and 
>> uses 387 (so check_cflags would always add it). But I moved it to the 
>> more relevant part of the source (new patch attached).
> Huh? That reads to me like "check_cflags -mfpmath=sse" would do exactly
> the same thing (well, except for some ugly warnings).

Yes, but I thought the ugly warnings are not acceptable.


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