From: "Hemmann, Volker Armin" <volker.armin.hemmann@tu-clausthal.de>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] CFLAGS/USE...
Date: Fri, 10 Feb 2006 18:30:58 +0100 [thread overview]
Message-ID: <200602101830.58689.volker.armin.hemmann@tu-clausthal.de> (raw)
In-Reply-To: <43ECBE09.3020709@gmx.net>
On Friday 10 February 2006 17:23, Jarry wrote:
> Sorry for asking probably trivial question, but if I have in
> /etc/make.conf: CFLAGS="-march=athlon-xp -pipe -O2" ,
>
> does it still make sense to include use-options:
> USE="3dnow mmx sse" ???
yes, because the USE flag is something completly different from the CFLAG
>
> Or is it selected automaticly by that -march=athlon-xp ?
it is selected by march for the CFLAGS, but some apps have additional
optimiziations built in, that have to be activated with configure options.
That is where the USE flags come to action.
So, set them in the useflags too, there are some apps that use them for
better performance.
--
gentoo-user@gentoo.org mailing list
prev parent reply other threads:[~2006-02-10 17:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-10 16:23 [gentoo-user] CFLAGS/USE Jarry
2006-02-10 17:30 ` Hemmann, Volker Armin [this message]
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