Re: [gentoo-user] switching CPU's -- what strange things do I need?

[Ricardo Saffi Marques]

I really don't know. I mean, I particularly always stick to Gentoo Safe
Cflags, but I know people that use a 32-bit profile and use -march=nocona.
Let's see what other ppl have to say.

On 1/25/08, John covici <covici@××××××××××.com> wrote:
>
> on Friday 01/25/2008 Andrey Falko(ma3oxuct@×××××.com) wrote
> > On Jan 25, 2008 10:00 AM, John covici <covici@××××××××××.com> wrote:
> >
> > > Hi folks.  I right now have my CCFLAGS set to CFLAGS="-O2
> > > -mtune=athlon-xp -pipe" -- now I am getting one of those new Intel
> > > e8400 CPU's and so I have two questions.
> > >
> > > What should I change my CCFLAGS to -- and do I have to recompile the
> > > whole system after this is done or what?
> >
> >
> > I've done this before. I moved from an old Intel 3.06 Ghz to a new
> Athlon64
> > 4600+. I did *not* change flags before the move from system to system.
> After
> > the move, however,  I  changed my -march flag (in your case -mtune,
> which is
> > equivalent) and recompiled everything to have the change take effect.
> >
> > In your case, move the system from machine to machine, then change your
> > -mtune to: -mtune=nocona (see
> >
> http://gcc.gnu.org/onlinedocs/gcc-4.2.2/gcc/i386-and-x86_002d64-Options.html#i386-and-x86_002d64-Options
> )
> > . When you are done with that recompile everything: emerge -e world
> >
> Thanks all -- I have a 32-bit profile, so I guess I will not be able
> to use ncona -- is this correct?
>
>
> --
> Your life is like a penny.  You're going to lose it.  The question is:
> How do
> you spend it?
>
>          John Covici
>          covici@××××××××××.com
> --
> gentoo-user@l.g.o mailing list
>
>


-- 
Ricardo Saffi Marques
Laboratório de Administração e Segurança de Sistemas (LAS/IC)
Universidade Estadual de Campinas (UNICAMP)
Cell: [phone]
Skype: ricardo_saffi_marques
Website: http://www.rsaffi.com