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 1M7Yfq-00088F-OT for garchives@archives.gentoo.org; Fri, 22 May 2009 17:36:50 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 578F7E034B; Fri, 22 May 2009 17:36:49 +0000 (UTC) Received: from web31608.mail.mud.yahoo.com (web31608.mail.mud.yahoo.com [68.142.198.154]) by pigeon.gentoo.org (Postfix) with SMTP id 2707AE03A3 for ; Fri, 22 May 2009 17:36:49 +0000 (UTC) Received: (qmail 27666 invoked by uid 60001); 22 May 2009 17:36:48 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1243013808; bh=y1OXUshO41OZ6gn66ZZtC35UXG+tB616MDQTWyvrhgM=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type; b=s+Tey0Cqo4+95gaFfUYQDg5BwrJ+arzTwDHlPkXfHPId1MdZSH6/ELAl4o4q1moyqvpgc0C938+R+2Mu92Sv/4KhwrXGDJsbuh8tkPBfvzwnVrh5IXEMsbtroneSfTZkZncxlmJLB24X4nKjPX180aIWQ1Qucu8a2/t2Sik8++A= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type; b=YsGkvlG/FU7FN/fE/enAuh2tsTcDymK5dal/HXYwmzQSEwK7OP5NtQX7fQ8+dxFzcf8+wLsjuptac6jmYjtrPV7tS1j5Q98v0/smGci6hJm5fi0HHMzSxMqT/lGUKuqg5uFUDVL1J2/yO2s8LOT2nIG9zDAHU43vyM9LBADB4Zc=; Message-ID: <496642.27440.qm@web31608.mail.mud.yahoo.com> X-YMail-OSG: FDpMszEVM1noKj2gc_8dQxPYsaYCKHHv4R1RTEnhF4x4Dul5SnNsN2fG9nybuCpZCiL_7glbLRoBc6IxDF79KeVwk4FiJGokmXbKEmdxjlZS6hJvgfTygoGNV74wSgd9el9iP9PjtEwbSdeoJwNo0JQBmsb.bfLz4KiZ02rocSTh1S2jqBBVEiTTunWVIwGg7_ETVcMtBKtDTEEiQ4i6NUYp5iJVAmJRNQ4_mgiZq.6zrkHKMqKkCDStIHu95oZnMSCqYToU6BuakCAj.HHqJI7llkEQVQ5NrXwPNyYr_JT4LGz8wXPbzOnfejjBjyvBPgjH9E75TbGonRh6YhroLJfqKpYPzUHXIQ-- Received: from [161.184.44.180] by web31608.mail.mud.yahoo.com via HTTP; Fri, 22 May 2009 10:36:47 PDT X-Mailer: YahooMailClassic/5.3.9 YahooMailWebService/0.7.289.10 Date: Fri, 22 May 2009 10:36:47 -0700 (PDT) From: maxim wexler Subject: Re: [gentoo-user] Re: -march=auto To: gentoo-user@lists.gentoo.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=us-ascii X-Archives-Salt: e014beb7-93db-40e4-b66d-a4bcc928875e X-Archives-Hash: 6bb4a4463f66ae1e793a5132fd33ad71 --- On Thu, 5/21/09, Alex Schuster wrote: > From: Alex Schuster > Subject: [gentoo-user] Re: -march=auto > To: gentoo-user@lists.gentoo.org > Received: Thursday, May 21, 2009, 12:30 PM > 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 For an 900A w/intel Atom? This is what I get: Warning: Your compiler supports the -march=native option which you may prefer Warning: Newer versions of GCC better support your CPU with -march=atom -march=core2 -mtune=pentium -mfpmath=sse. Now I'm confused. It says *my* compiler supports -march=native. Then it says "Newer versions". Isn't v4.3.2 new? It was from a new pkg about a month ago. Is it giving me a choice here? Can I really declare two -march variables? What about mtune and mfpath, are they meant to be "instead of" or "in addition to"? What goes in the kernel config? What in /etc/paludis/bashrc? Maxim __________________________________________________________________ Yahoo! Canada Toolbar: Search from anywhere on the web, and bookmark your favourite sites. Download it now http://ca.toolbar.yahoo.com.