[Ffmpeg-devel] [PATCH] fix x86 asm compilation

Michel Bardiaux mbardiaux
Mon May 30 09:57:48 CEST 2005

Rich Felker wrote:
> On Mon, May 30, 2005 at 12:39:23AM +0200, Aurelien Jacobs wrote:
>>Currently i386/dsputil_mmx.c fails to compiles on x86 when configured
>>with --disable-opts. (At least for me with gcc 3.3.4)
> Why does this option to configure exist? It's known that disabling
> optimizations is not supported for asm...
>>I've written a small patch which fixes this. I don't like it very much,
>>but I've no better idea right now.
> If you insist on disabling optimizations (there is no good reason for
> this), then disable asm while you're at it too...

There *is* one good reason to disable optimisations: when you need 
debugging (which of course never happens with ffmpeg :-) ), gdb is often 
very confused by optimisations. Being unable to have asm and no-opt 
simultaneously makes debugging of code containing asm a real PITA.

> Rich

Michel Bardiaux
Peaktime Belgium S.A.  Bd. du Souverain, 191  B-1160 Bruxelles
Tel : +32 2 790.29.41

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