From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1M7DyL-000414-OW for garchives@archives.gentoo.org; Thu, 21 May 2009 19:30:34 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 13639E0406; Thu, 21 May 2009 19:30:32 +0000 (UTC) Received: from mail.askja.de (mail.askja.de [83.137.103.136]) by pigeon.gentoo.org (Postfix) with ESMTP id D9B87E0406 for ; Thu, 21 May 2009 19:30:31 +0000 (UTC) Received: from static-87-79-89-40.netcologne.de ([87.79.89.40] helo=zone.wonkology.org) by mail.askja.de with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.69) (envelope-from ) id 1M7DyJ-0003Yv-CS for gentoo-user@lists.gentoo.org; Thu, 21 May 2009 21:30:31 +0200 Received: from localhost (localhost [127.0.0.1]) (uid 1000) by zone.wonkology.org with local; Thu, 21 May 2009 21:30:24 +0200 id 000103C2.4A15ABD0.000064A5 From: Alex Schuster To: gentoo-user@lists.gentoo.org Subject: [gentoo-user] Re: -march=auto Date: Thu, 21 May 2009 21:30:19 +0200 User-Agent: KMail/1.11.3 (Linux/2.6.28-tuxonice-r3; KDE/4.2.3; i686; ; ) References: <645806.23464.qm@web31603.mail.mud.yahoo.com> <58965d8a0905211141w77f69ba0v573570ebb3b4bee4@mail.gmail.com> <200905212109.01217.wonko@wonkology.org> In-Reply-To: <200905212109.01217.wonko@wonkology.org> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.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: <200905212130.20136.wonko@wonkology.org> X-Archives-Salt: c4080a94-1eed-4ad8-b75f-238cb5c33bbf X-Archives-Hash: 07d676b24710e0f0f6c58e91d4519553 I just wrote: > > Could also perhaps try -march=auto if you're using a version of GCC > > that supports it. Oh, it's -march=native. > BTW, is there a possibility to let gcc tell what flags it will actually > use with -march=auto? Paul Hartman just posted a link to a script that seems to do what I was looking for in the "[OT]eee 900a intel atom is what processor family?" thread: But it suggests using -march=k8 - isn't that a 64-bit-only thing? I'm not compiling for AMD64, I'm still using 32-bit mode. So I have -march=athlon-xp in my CFLAGS for my AMD Athlon(tm) Dual Core Processor 4850e CPU. Wonko