[Ffmpeg-devel] [BUG] Compilation failure when using --disable-opts

[Michael Niedermayer]

Hi

On Thu, Mar 15, 2007 at 12:13:07AM +0000, M?ns Rullg?rd wrote:
> Michael Niedermayer <michaelni at gmx.at> writes:
> 
> > Hi
> >
> > On Wed, Mar 14, 2007 at 10:16:59PM +0000, M?ns Rullg?rd wrote:
> >> Panagiotis Issaris <takis at issaris.org> writes:
> > [...]
> >> >> And are you certain that this is correct for x86_64?  Is the check
> >> >> even needed there, what with all the extra registers?
> >> > Actually, I do not really know... I figured that because x86_64 is
> >> > backwards compatible
> >> 
> >> The instruction set is compatible, meaning that everything that works
> >> on 32-bit x86 still works on a 64-bit chip.  Things that don't work on
> >> 32-bit chips might still be possible.  8 extra registers come to
> >> mind...
> >> 
> >> > the registers are still there and the tests should still work. In the
> >> > worst case the tests would be unnecessary ofcourse... Prefer to remove
> >> > it and only add it when someone figures out how this works on x86_64?
> >> 
> >> I don't think this is very urgent, so I'd rather wait a day for
> >> someone with the knowledge to shed some light.
> >
> > the tests should be run on x86_64 too
> 
> Care to explain? 

well if the x86 code is put under a CONFIG_EBX which is never set for x86_64
then you practically disable it for x86_64, not nice ...


> Does the same test even work at all on x86_64?

why not?

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

No great genius has ever existed without some touch of madness. -- Aristotle
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