F12 to require "i686", but which CPUs do not qualify?
Andrew Haley
aph at redhat.com
Fri Aug 14 09:38:58 UTC 2009
Kevin Kofler wrote:
> Joachim wrote:
>> I do not understand then, that there exist i686 packages which have
>> higher requirements.
>
> Those packages need to be fixed.
>
> I know there are some audio production packages which are building with SSE
> enabled (and required, those packages don't do runtime detection), IIRC in
> both Fedora and RPM Fusion, in blatant violation of the guidelines, and the
> packager(s) refuse(s) to fix this (they even do it intentionally for new
> packages, despite my objections in the reviews). If I'm not mistaken, most
> of the offenders are owned by oget (Orcan Ogetbil), but if I were you, I'd
> check all the audio production packages.
>
>> Look at the ATLAS library for which I had filed a bug because only
>> SSE/SSE2/SSE3 variants are provided
>
> This one needs to get fixed too, of course.
>
> I've looked at how Debian is handling this, but they're stuck at an old
> version (3.6.0), maybe exactly because of this issue. :-(
>
> We need to provide "architectural defaults" for plain i686, even crappy
> ones, they just need to work at all.
I think there's a valid case for making an exception to this: when a
package is an accelerated version of a particular library. That is,
when the basic functionality of a library is available in a i686
Fedora package, but a special SSEx version of the library makes use of
faster instructions.
Andrew.
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