[Nottingham] Athlon64 gcc compile flags on Gentoo

Martin martin at ml1.co.uk
Wed Feb 14 12:43:45 GMT 2007

Roger Light wrote:
> On 14/02/07, Martin <martin at ml1.co.uk> wrote:
>> I've found a good summary on:
>> http://gentoo-wiki.com/CFLAGS
> [snip]
>> Note the lack of "-fomit-frame-pointer" that is more usual. Any reason
>> why for the Athlon64?
> It explains it on the page you linked to.

OK, so it's already enabled by "-O2":

" -fomit-frame-pointer
... This is mainly useful on x86 as most other arches, like AMD64, have
it on by default at -O2 or greater, though binary size may increase

Mmmm, slightly turgidly explained, as can be lost of meaning in the

(There must have been quite a log-jam of emails from the maillist last
night. Thanks for the replies that came in this morning.)


Martin Lomas
martin at ml1.co.uk

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