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 1LvgCQ-0003IN-Ev for garchives@archives.gentoo.org; Sun, 19 Apr 2009 23:13:22 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id AF854E03DB; Sun, 19 Apr 2009 23:13:20 +0000 (UTC) Received: from mail-bw0-f175.google.com (mail-bw0-f175.google.com [209.85.218.175]) by pigeon.gentoo.org (Postfix) with ESMTP id 63EF0E03DB for ; Sun, 19 Apr 2009 23:13:20 +0000 (UTC) Received: by bwz23 with SMTP id 23so217524bwz.34 for ; Sun, 19 Apr 2009 16:13:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:to:subject:date :user-agent:references:in-reply-to:mime-version:content-disposition :message-id:content-type:content-transfer-encoding; bh=P5pMWL24Q9ToPKjObuvtglkQUHTckqwkjm4e/8QZHGo=; b=ubsiYJ2HJrOw6qTuvtD1ylWTj6qZ1H5Q0ILAoJ9ayW2VEnc0py0edzZIv9kP01bI/r 3ZqIMUAJCIh8haSEpStHWuyVS/gM9mgBjcIMcnyGI3OchEvpWKrZjdIsKZVorcDeuD3Y tVwjWo57FTMJuBXADmY9viVxBVwn+pAbyO0bQ= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:subject:date:user-agent:references:in-reply-to:mime-version :content-disposition:message-id:content-type :content-transfer-encoding; b=rexNSSaVcbh715UyUNM91NN4DKs5egy0B2I6Cv/q65MIB92lmnNZ4wF8o9A72LdMH6 ey0WkoKkadWm186f4Ywd1G2JH7EEHOoGeJplWtF05zt3pd7HvixW/isP1mXFvnhObR8V NPOBttX9IN6KtCZPamh5GxevTA/OAFFqyXQeE= Received: by 10.103.6.18 with SMTP id j18mr2744078mui.33.1240182799714; Sun, 19 Apr 2009 16:13:19 -0700 (PDT) Received: from nazgul.localnet (196-210-140-95-rrdg-esr-2.dynamic.isadsl.co.za [196.210.140.95]) by mx.google.com with ESMTPS id 23sm12199303mun.30.2009.04.19.16.13.17 (version=SSLv3 cipher=RC4-MD5); Sun, 19 Apr 2009 16:13:18 -0700 (PDT) From: Alan McKinnon To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] downgrading gcc Date: Mon, 20 Apr 2009 01:11:39 +0200 User-Agent: KMail/1.11.2 (Linux/2.6.29-gentoo; KDE/4.2.2; x86_64; ; ) References: <5bdc1c8b0904191318h4eb5905bh1ab152dc331d6936@mail.gmail.com> In-Reply-To: <5bdc1c8b0904191318h4eb5905bh1ab152dc331d6936@mail.gmail.com> 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-Disposition: inline Message-Id: <200904200111.39901.alan.mckinnon@gmail.com> Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Archives-Salt: 485c2594-3ac7-4ffe-b960-7e98f4314a5a X-Archives-Hash: 645288736c5c0c6477a0e85acdde9433 On Sunday 19 April 2009 22:18:24 Mark Knecht wrote: > Hi, > Is downgrading gcc allowed within the same major version? If I > wanted to downgrade my gcc from 4.3.2 to 4.1.2 then: It's not a problem. If it were, there would be no point in allowing multiple versions as it would not be possible to select a lower numbered one > 1) Do I simply choose 4.1.2 using gcc-config? Yes > 2) Should I expect any problems with the system if I do > > emerge -e system > emerge -e system [OPTIONAL] > emerge -e world Why would you want to do this? Do you suspect a toolchain API/ABI breakage between 4.1.2 and 4.3.2? -- alan dot mckinnon at gmail dot com