Bug#738760: libav: Add proper raspberry pi CPU detection

[Sebastian Ramacher]

Control: tags -1 + pending

On 2015-01-07 07:22:43, peter green wrote:
> Sebastian Ramacher wrote:
> >
> >Thank you for the explanation. What about the attached patch? [1]
> >
> >I've looked through the code and the only place where --enable-runtime-cpudetect
> >makes a difference is on powerpc (libavutil/ppc/cpu.c). Special handling for
> >Raspbian should not make a difference. Reinhard, is my reading of the code
> >correct?
> I honestly don't recall why exactly I enabled that option. It's possible I
> determined it was needed at the time I first prepared the patch (which was
> some time ago, I generally forward port changes rather than starting from
> scratch each time), it's also possible that I enabled it and it didn't stop
> the package coming out with armv7 code in it but I never disabled it again.
> Lets try without it and see what happens.
> >[1] Is this the right vendor in dpkg-vendor's terms?
> It's the right vendor but in general it's better to use --derives-from
> rather than --is in situations like this on the principle that a newly
> formed derivative should as much as possible have the same behaviour as the
> distro it derives from.

Thanks for the hint. I've now pushed the patch with --derives-from to
the experimental branch for inclusion after the release of jessie.

> I've applied your patch, tweaked it to use --derives-from rather than --is
> implemented this change, written a changelog entry (which may be more
> verbose than actually needed, feel free to cut it down if you want when
> bringing the change into Debian) and am now running a build. Assuming it
> builds successfully and passes our contamination checker I will be uploading
> it to raspbian jessie.

Please let me know how the tests went.

Cheers
-- 
Sebastian Ramacher
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