Bug#1108731: ffmpeg: Please disable ASM-based optimizations on ppc64 as well

Hi,

On Fri, Sep 5, 2025 at 9:40 AM John Paul Adrian Glaubitz
<[email protected]> wrote:
>
> Hi Sean,
>
> On Tue, 2025-08-19 at 09:26 +0200, John Paul Adrian Glaubitz wrote:
> > Hi,
> >
> > On Mon, 2025-08-18 at 19:48 -0400, Sean McGovern wrote:
> > > The failing 'checkasm-sw_yuv2rgb' test was new for FFmpeg 7.1 and
> > > indeed I don't think that one is sporadic.
> > > Unfortunately at the time, upstream was not running the test suite on
> > > 32- or 64-bit PowerPC (or any big-endian configuration either).
> > >
> > > 'checkasm-llauddsp' is the one that can fail sporadically and I
> > > suspect it just doesn't run often enough to observe the failure on
> > > buildd.
> > > We see it very often upstream.
> >
> > Could you disable the ASM stuff on ppc64 in any case for the time being?
> >
> > It's really annoying having to manually build and upload ffmpeg for ppc64
> > all the time to work around this problem.
>
> The package again failed to build from source on ppc64 because of this bug:
>
> https://buildd.debian.org/status/fetch.php?pkg=ffmpeg&arch=ppc64&ver=7%3A7.1.1-1%2Bb8&stamp=1756717384&raw=0
>
> And I will have built it manually again. Can you please disable the ASM stuff
> for ppc64 for the time being? It's better to have a slow ffmpeg package than
> one that doesn't build at all.

I sent this exact thing up to salsa several weeks ago when you
originally asked for it:
https://salsa.debian.org/multimedia-team/ffmpeg/-/merge_requests/15

It's been sitting unreviewed since then.

Thanks,

Sean McGovern