[Gllug] Are i386 & i586 rpm's interchangeable?

David Damerell damerell at chiark.greenend.org.uk
Fri Aug 17 09:40:36 UTC 2001


On Friday, 17 Aug 2001, Andrew Richardson wrote:
>I believe that the Mandrake rpm's are just 586 optimised rather than 
>specific.

My apologies if someone else has already made this explicit, but the
difference here (which Andrew clear is aware of) is that one can
either compile using only the 386 instruction set but in a way that
causes code to run fastest on a 586, or one can actually compile using
the 586 instruction set. The latter gives optimum performance, but the
former will at least allow stuff to run on older machines. It's always
been my understanding that Mandrake does the former.

If we had a BSD-style 'make world' this would all be irrelevant;
'apt-get source' is getting there, but there's a way to go yet.

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