--- Richard Fish <[EMAIL PROTECTED]> wrote:
> maxim wexler wrote:
>
> >>CFLAGS="-O2 -march=pentium3 -pipe -mcpu=i686
> >>-fomit-frame-pointer"
> >>CXXFLAGS="${CFLAGS}"
> >>
> >>
> >
> >there seems to be some controversy over the use of
> >-fomit-frame-pointer. See the gentoo/doc,
> > IIRC on USE flags. Just what does -fomit etc do?
> >
> >
>
> The "frame pointer" points to the variables used in
> a "frame" (read:
> function). It is useful to have a pointer to these
> for debugging, but
> not for much else. fomit-frame-pointer can (on some
> platforms) allow
> gcc to re-use that register for the function, and
> maybe improve performance.
>
> There should not be any controversy over it.
> According to the GCC
> documentation, it is automatically enabled at all
> optimization levels.
automatically? So, you can leave it out of CFLAGS?
>
> -Richard
>
> --
> gentoo-user@gentoo.org mailing list
>
>
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