[FFmpeg-devel] Re: ffmpeg-8.0.1 on hppa linux fails "fate-filter-aemphasis-50fm" test?

[Michael Niedermayer via ffmpeg-devel <ffmpeg-devel@ffmpeg.org>]

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Hi Andrew

On Thu, Jan 08, 2026 at 10:58:17PM +0300, Andrew Randrianasulu via ffmpeg-devel wrote:
> make[2]: *** [/build/reproducible-path/ffmpeg-8.0.1/tests/Makefile:320:
> fate-filter-aemphasis-50fm] Error 1
> 
> from
> 
> https://buildd.debian.org/status/fetch.php?pkg=ffmpeg&arch=hppa&ver=7%3A8.0.1-3&stamp=1767142089&raw=0

I dont have a HPPA system to test this

the following passed on qemu-hppa
../configure  --target-exec='qemu-hppa  -L qemu-hppa -L /usr/hppa-linux-gnu/' --samples=/home/michael/fatesamples/fate/fate-suite/ --enable-gpl --cross-prefix=/usr/hppa-linux-gnu//bin/ --cc='ccache hppa-linux-gnu-gcc' --arch=hppa --target-os=linux --enable-cross-compile
make -j32  fate-filter-aemphasis-50fm

on n8.0.1

the way to investigate this is to look at the output from the filter (teh audio not the crcs)
and if its all +- 1 then its some FPU rounding difference
and in that case the test is the problem and needs to be made more tolerant
otherwise if there are lareg differences
then theres a real bug somewhere, this can be searched systematcially
by adding lots of printf() and comparing until you find where the issue starts

but as it doesnt replicate with qemu thats something you or someone
who has access to a box where this replicates needs to look into

also i admit iam quite overloaded with work so i would prefer if
someone else looks into that quiet a bit over someone giving me
access to a HPPA ;)

thx

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

The educated differ from the uneducated as much as the living from the
dead. -- Aristotle 

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