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 1RR7rW-0007b8-1C for garchives@archives.gentoo.org; Thu, 17 Nov 2011 19:43:06 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 9B950E05A4; Thu, 17 Nov 2011 19:42:54 +0000 (UTC) Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) by pigeon.gentoo.org (Postfix) with ESMTP id DF9A521C028 for ; Thu, 17 Nov 2011 19:41:51 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp.gentoo.org (Postfix) with ESMTP id 551591B4017 for ; Thu, 17 Nov 2011 19:41:51 +0000 (UTC) X-Virus-Scanned: by amavisd-new using ClamAV at gentoo.org X-Spam-Score: -4.376 X-Spam-Level: X-Spam-Status: No, score=-4.376 required=5.5 tests=[AWL=1.025, BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-1.201] Received: from smtp.gentoo.org ([127.0.0.1]) by localhost (smtp.gentoo.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id zdY8JAakfy2j for ; Thu, 17 Nov 2011 19:41:45 +0000 (UTC) Received: from lo.gmane.org (lo.gmane.org [80.91.229.12]) by smtp.gentoo.org (Postfix) with ESMTP id 262B01B4011 for ; Thu, 17 Nov 2011 19:41:43 +0000 (UTC) Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1RR7q6-0005w1-C8 for gentoo-user@gentoo.org; Thu, 17 Nov 2011 20:41:38 +0100 Received: from rrcs-71-40-157-251.se.biz.rr.com ([71.40.157.251]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 17 Nov 2011 20:41:38 +0100 Received: from wireless by rrcs-71-40-157-251.se.biz.rr.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 17 Nov 2011 20:41:38 +0100 X-Injected-Via-Gmane: http://gmane.org/ To: gentoo-user@lists.gentoo.org From: James Subject: [gentoo-user] Re: Upgrading gcc: both 4.4 and 4.5 needed? Date: Thu, 17 Nov 2011 19:41:21 +0000 (UTC) Message-ID: References: <4EC2B642.3010500@gmail.com> <201111160811.17331.stephane@22decembre.eu> <20111116133052.GA12194@math.princeton.edu> 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 Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: sea.gmane.org User-Agent: Loom/3.14 (http://gmane.org/) X-Loom-IP: 71.40.157.251 (Mozilla/5.0 (X11; Linux x86_64; rv:7.0.1) Gecko/20111113 Firefox/7.0.1 SeaMonkey/2.4.1) X-Archives-Salt: 85dc01f8-7d65-45a3-b487-093c0361ab36 X-Archives-Hash: 6e615b0f3ce1c4a44fcfe2f9da8a41e2 Willie Wong math.princeton.edu> writes: > > It makes gcc-4.5.3 use a newer method to detect parallelism, thus > > (potentially) makes programs compiled by gcc to have better multithreaded > > performance. > Now, why can't the USE descriptions be like the kernel option > descriptions and have something like what Pandu wrote included? I added this to root's .bashrc a long time ago: # USE flag settings hack by Ciaran McCreesh: explainuseflag(){ sed -ne "s,^\([^ ]*:\)\?$1 - ,,p" $(portageq portdir)/profiles/use.{,local.}desc; } alias ef="explainuseflag" Then simply use the alias for a quick check to learn about all the different uses of a given flag: 'ef graphite' # ef graphite Enable support for non-Roman fonts via media-gfx/graphite2 Enable support for non-Roman fonts via media-gfx/graphite2 Add support for the framework for loop optimizations based on a polyhedral intermediate representation Then drill down into the a specific package's use flag meaning, using the aforementioned 'equery u' delineated by Albert. hth, James