[FFmpeg-devel] ASM support for MACOSX 10.5: really?

[Michael Niedermayer]

On Tue, Mar 25, 2008 at 08:18:57PM +0100, Michael Niedermayer wrote:
> On Tue, Mar 25, 2008 at 07:04:10PM +0000, Robert Swain wrote:
> > On 25/03/2008, vmrsss <vmrsss at gmail.com> wrote:
> > > On 25 Mar 2008, at 14:53, ?smail D?nmez wrote:
> > >  > First of all try with gcc not gcc-4.2, static build works fine with
> > >  > gcc which is 4.0.1, if you want gcc 4.2 you'll have to do a 64bit
> > >  > build due to flac error you encountered. And to do 64bit build on
> > >  > MacOSX you need a patch that I posted to this list many times, a
> > >  > little search will find it.
> > >
> > > Thanks a lot Ismail! This helped. Indeed, using gcc the static build
> > >  goes through smoothly. With --enable-shared however, I still have
> > >  can't compile cavdsp_mmx and flacdsp_mmx:
> > 
> > These two are known. As I recall, for flac Loren said that it could be
> > done using less regs but it's faster the way it is and the issue isn't
> > the code, it's GCC's register allocation. Maybe this works in gcc 4.4?
> > I've just been disabling them at configure time for the moment.
> 
> As i have a dozen gccs installed
> 
> (all with -fPIC -DPIC)
> 2.95        works
> 3.3         works
> 3.4         works
> 4.0         works
> 4.1         works
> 4.2         5 "error: 'asm' operand has impossible constraints" nonsense
> 4.3         3 "error: 'asm' operand has impossible constraints" nonsense
> 4.4         3 "error: 'asm' operand has impossible constraints" nonsense

This list was for flacdsp_mmx.c only! Also i didnt rerun configure or
anything, just compiled the file with different compilers

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

Concerning the gods, I have no means of knowing whether they exist or not
or of what sort they may be, because of the obscurity of the subject, and
the brevity of human life -- Protagoras
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