Which optimization for x86-64

[Dennis Veatch]

On Friday 13 May 2005 10:14 am, Jon South wrote:
> Dennis Veatch wrote:
> > On Friday 13 May 2005 9:10 am, Moritz Heiber wrote:
> >>On Fri, 13 May 2005 08:34:31 -0400
> >>
> >>Dennis Veatch <dveatch at woh.rr.com> wrote:
> >>>Ok, tried that and relined gcc. The lin failed before it got to the
> >>>point of recompiling gcc with "badvalue (athon64) for march and mcpu".
> >>
> >>It should be 'Athlon64' or 'athlon64' .. not athon64.
> >>
> >>Regards,
> >>
> >>Moritz
>
> It should also be noted that by using those opts, it's still only going
> to be 32 bit. To force compiling 64 bit requires -m64 -- but that wont
> do you any good with a 32 bit kernel... At the moment, it's not worth
> the effort to try and compile 64 bit apps until we get a 64 bit ISO
> going for it, and even then, it will take some effort to create and to
> maintain.
>
> -Striker

Where in the optimizations would I insert "-m64"?