On 12/19/06, Boyd Stephen Smith Jr. <[EMAIL PROTECTED]> wrote:
On Tuesday 19 December 2006 13:48, Jakob <[EMAIL PROTECTED]> wrote
about 'Re: [gentoo-user] CFLAGS Core2Duo':
> Thaks for the quick reply.
> On http://gentoo-wiki.com/Safe_Cflags they say for 32bit use:
> CFLAGS="-march=prescott -O2 -pipe -fomit-frame-pointer"
> Is this wat you meant for better -march settings?
Specifically, I meant that -march=prescott is probably better
than -march=pentium-m. If you use Konqueror, hit <URL: info:/gcc/i386 and
x86-64 Options >; or just use your favorite infotext reader to look at the
x86(_64) machine specific options, so you are generating code tuned
particularly to your processor.
> I was confused by the GWN because they didnt say its for 64bit only.
Well, a lot of people assume that buying a 64-bit processor means you
actually want to use the extra bits (and registers). Of course, it's
getting harder and harder to buy a non-64 bit chip.
--
"If there's one thing we've established over the years,
it's that the vast majority of our users don't have the slightest
clue what's best for them in terms of package stability."
-- Gentoo Developer Ciaran McCreesh
Its funny till yesterday I didnt even know It supports 64bit ;-)
I think I will change to -march=prescott and stick with 32bit.
do I have to run emerge -avuD world after changing to -march=prescott?
--
gentoo-user@gentoo.org mailing list
