[FFmpeg-devel] build failure on osx 10.5.8 ppc

Michael Niedermayer michaelni at gmx.at
Sun Oct 7 21:44:48 CEST 2012

On Sun, Oct 07, 2012 at 12:54:39PM -0600, Pavel Koshevoy wrote:
> On 10/7/12 12:49 PM, Carl Eugen Hoyos wrote:
> >Pavel Koshevoy <pkoshevoy <at> gmail.com> writes:
> >
> >>CC libavcodec/ppc/fmtconvert_altivec.o
> >>/nfs/scratch/Developer/ffmpeg-git-src/libavcodec/ppc/fmtconvert_altivec.c:
> >>In function ‘float_to_int16_interleave_altivec’:
> >>/nfs/scratch/Developer/ffmpeg-git-src/libavcodec/ppc/fmtconvert_altivec.c:96:
> >>error: argument 2 must be a 5-bit unsigned literal
> >>make: *** [libavcodec/ppc/fmtconvert_altivec.o] Error 1
> >Regression since 55c49af / 642b4ef
> >
> >Carl Eugen
> I am not sure what to do with this information.  Do I need to send
> the patch?  Is someone going to revert whatever broke this?

i think carl just wanted to point to the commit that caused this so
others dont spend time bisecting.

About how to solve this, can you benchmark your patch against simply
reverting this ?
It would be interresting, but the revert has the problem that the VLA
would be reintroduced and VLAs can be problematic so it would be better
if this can be solved without VLA.

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

When the tyrant has disposed of foreign enemies by conquest or treaty, and
there is nothing more to fear from them, then he is always stirring up
some war or other, in order that the people may require a leader. -- Plato
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