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
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