multilib fun - devel packages

Florian La Roche laroche at redhat.com
Mon Dec 12 10:42:20 UTC 2005


On Sat, Dec 10, 2005 at 12:32:26AM +0100, David Woodhouse wrote:
> On Fri, 2005-12-09 at 19:55 +0100, Matthias Saou wrote:
> > Let me ask a silly question here : Why do we want to encourage people to
> > build 32bit stuff on 64bit installs?
> 
> On PPC we use mostly 32-bit packages, because 64-bit is fairly pointless
> for most things. The choice of ppc32 vs. ppc64 isn't the same as the
> choice of ia32 vs. amd64, because in the ppc case the 32-bit option is
> still actually a sane architecture with a sane number of registers --
> whereas on amd64 you gain more by using the extra registers than you
> lose to the natural inefficiency of 64-bit code.


Even on ppc we kind of move slowly over to use more and more 64bit apps,
as multilib on power prefers 64bit applications over the 32bit ones.

So it would actually make a lot of sense to talk about a ppc64 release
where 32bit apps are only "added if needed".

regards,

Florian La Roche




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