O3?

Simon Roby shamblrd at hotmail.com
Sun Oct 27 15:03:29 PST 2002


----- Original Message -----
From: "James Drabb" <JDrabb at tampabay.rr.com>
To: <lfs-chat at linuxfromscratch.org>
Sent: Sunday, October 27, 2002 3:48 PM
Subject: Re: O3?


> On Sun, 27 Oct 2002 14:18:25 -0500
> Joe Morris <heartboy at nycap.rr.com> wrote:
>
> > Everything was compiled with "-O3 -march=athlon-xp -mmmx -msse
> > -mfpmath=sse -m3dnow -s -z combreloc" except glibc, binutils, and gcc,
> > Joe
>
> You can reduce that down to:
>
> "-O3 -march=athlon-xp -msse -mfpmath=sse -m3dnow -z combreloc"
>
> The -mmmx option is redundant since -msse includes -mmmx and the -s
> option is ignored.
>
> Has your system been stable after building with those opts?  I am
> rebuilding a 4.0 system now and want to try a more optimized based
> system.
>
> Jim Drabb
>

In the same order of subject, is there an HOWTO or some documentation on
using the various optimization flags of gcc? There seems to be so many.
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