From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.54) id 1F7cKD-0003Rj-8C for garchives@archives.gentoo.org; Fri, 10 Feb 2006 17:44:53 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.5/8.13.5) with SMTP id k1AHhcd5026867; Fri, 10 Feb 2006 17:43:38 GMT Received: from poseidon.rz.tu-clausthal.de (poseidon.rz.tu-clausthal.de [139.174.2.21]) by robin.gentoo.org (8.13.5/8.13.5) with ESMTP id k1AHddLs010559 for ; Fri, 10 Feb 2006 17:39:39 GMT Received: from poseidon.rz.tu-clausthal.de (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 60B932012A7 for ; Fri, 10 Feb 2006 18:30:59 +0100 (CET) Received: from tu-clausthal.de (hades [139.174.2.20]) by poseidon.rz.tu-clausthal.de (Postfix) with ESMTP id 40E2720129D for ; Fri, 10 Feb 2006 18:30:59 +0100 (CET) Received: from energy.heim10.tu-clausthal.de ([139.174.241.94] verified) by tu-clausthal.de (CommuniGate Pro SMTP 5.0.6) with ESMTP id 11174054 for gentoo-user@lists.gentoo.org; Fri, 10 Feb 2006 18:30:59 +0100 From: "Hemmann, Volker Armin" To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] CFLAGS/USE... Date: Fri, 10 Feb 2006 18:30:58 +0100 User-Agent: KMail/1.9.1 References: <43ECBE09.3020709@gmx.net> In-Reply-To: <43ECBE09.3020709@gmx.net> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200602101830.58689.volker.armin.hemmann@tu-clausthal.de> X-Virus-Scanned: by PureMessage V4.7 at tu-clausthal.de X-Archives-Salt: e3b9a22a-dd83-485f-8bc0-304228acb0e3 X-Archives-Hash: 5b1e1d24e1a2e4bcc3448fa0efaca805 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