[gentoo-dev] Re: GCC 4.6.0

[Ryan Hill]

On Sun, 3 Apr 2011 05:50:32 +0000 (UTC)
Duncan <1i5t5.duncan@×××.net> wrote:

> Ryan Hill posted on Sat, 02 Apr 2011 22:11:12 -0600 as excerpted:
>
> >   You may also want to test your packages with the new -Ofast option to
> >   be sure it doesn't have any hardcoded assumptions about -O flags.
>
> The release description I've read for -Ofast says it includes -fast-math,
> among other things, a flag Gentoo has always strongly discouraged (you
> break with it, you keep the pieces) and which can get bugs resolved/
> invalid as a result.
>
> Now that gcc 4.6 itself is more strongly supporting it as enabled with one
> of the -O options, is that policy going to change, or is Gentoo going to
> officially not support -Ofast, as well?

I doubt we will.  If a package breaks because of -Ofast there's really
nothing we can do about it.  It's not a bug in the compiler or the package,
it's that you explicitly told it to generate non-standard-conformant code.


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