Re: Bug#857172: Please enable SSE2 on amd64 and disable altivec on PPC ports
On Wed, Mar 08, 2017 at 06:23:26PM +0200, Konstantinos Margaritis wrote:
> For many years, Altivec enablement has been debated in both ports
> (powerpc & ppc64). AFAIR, the consensus is that Altivec should be
> disabled by default and either enabled in a separate package (eg.
> atlas-altivec) or used through runtime detection (eg. ffmpeg, vlc).
I'm not aware of any of such -altivec packages and stuff like atlas
should be compiled from source on the target machine anyway for
performance reasons.
I did a quick search and I could only find ardour-altivec. Any others?
> If a package does enable altivec by default, then that's a bug and a
> policy violation. (...) But until that happens, we have to support the
> decision, if Firefox is built with altivec enabled (and I don't mean
> runtime detection, but failure to run on non-altivec CPUs), then that's
> a bug, period.
You shouldn't make such statement without actually mentioning the
section of the Debian Policy which states that Altivec has to be
turned off by default or which makes a generic statement regarding
this.
Also, powerpc is not a release architecture anymore, so I don't even
know how relevant such statements from the Debian Policy would be
nowadays.
Thanks,
Adrian
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer - glaubitz@debian.org
`. `' Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
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