Re: i486 base architecture

[Jeff Johnson <n3npq nc rr com>]

Pekka Pietikainen wrote:

> On Wed, Dec 01, 2004 at 11:10:04PM -0500, Jeff Johnson wrote:
>  
>
> > Prolly the strongest mechanism is to attach a run-time probe dependency to
> > the "cpu(...)" name space and parse /proc/cpuinfo for the relevant info.
> > That mostly works, but will have problems in chroot's w/o /proc mounted,
> > and will be kinda weird if/when, say, the mobo or disk is moved amongst
> > machines, to mention just 2 possible problems off the top of my head.
> >
> > I suspect those deficiencies can be lived with, and are no worse than 
> > existing arch based tests.
> >    
> Would there be any compilications if the thing was generalized and
> you could do Requires-Return-Code: /usr/lib/rpm/check-x86-cpu-flags cmov
> (or whatever the syntax would be, basic idea is that there's some
> external thing that exits with 0 or 1). 
>  

Well, not a script please, scripts break way too often to be reliable.

But yes, return codes like
    0 == condition is TRUE
    1 == condition is FALSE
from a function that is passed the {N,EVR,FLAGS} dependency triple which
is dispatched iff the 'cpu(...)' name space wrapper is detected.

Kinda like 'rpmlib(...)' tracking dependencies, which are also a 
run-time probe dependency
wrapped in a name space.

> In any case, such a thing should be easy to override, even when
> using a frontend like yum.
Yep.

73 de Jeff