Re: [gentoo-user] how to rebuild gentoo on a somewhat different hardware

[Helmut Jarausch <jarausch@igpm.rwth-aachen.de>]

On 11/17/10 00:01:15, Adam Carter wrote:
> > I have an up-to-date ~amd64 GenToo installation with has been
> > built on a current AMD64 (Phenom II) machine where I used
> > -mtune=native in etc/make.conf since I didn't think of the case
> > that I would need to port this system to a somewhat older Opteron
> > based machine (still AMD64)
> >
> > But after cloning the system, some fundamental utilities die of
> > an illegal instruction.
> >
> 
> Did you have -march set? If so, what to?
> 
> If -march is unset, then AFAIK your binaries should run on any amd64
> machine. If you have it set to native, then your binaries will only
> run on
> equal or greater hardware than what it was built on.

Thanks Alan. I knew that, but then I inherited an somewhat older 
Opteron machine and I wasn't aware that this one had a different 
instruction set then current Opterons.

Helmut.




-- 
Helmut Jarausch
Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany