[MPlayer-users] configure and Cyrix C3

[Guillaume POIRIER]

Hi,

On 11/13/05, Reimar Döffinger <Reimar.Doeffinger at stud.uni-karlsruhe.de> wrote:
> Hi,
> On Sat, Nov 12, 2005 at 03:35:16PM +0100, Guillaume POIRIER wrote:
> > > ./configure --enable-runtime-cpudetection. In config.mak,
> > > OPTFLAGS contains "-march=i486 -mtune=i586". Recompiled with GCC
> > > 4.0.2 ; the resulting binary seems slower but it works. Thanks !
> >
> > If compiling with i586 optimization may be the lowest common
> > denominator, so be it!
>
> If only changing the mcpu/mtune parameter makes the crash go away this
> probably is a gcc bug. As long as there is -march=i486 it should run on anything
> from 486-compatible up. Or is C3 not even 486-compatible??

I think that the problem is that runtime cpu detection still uses some
code in libavformat that requires cmov or a similar instruction.

Guillaume
--
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  -- Dominik 'Rathann' Mierzejewski