From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 88222138C9D for ; Tue, 28 Apr 2015 20:06:51 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 22110E0824; Tue, 28 Apr 2015 20:06:45 +0000 (UTC) Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 36839E0814 for ; Tue, 28 Apr 2015 20:06:44 +0000 (UTC) Received: from [192.168.3.7] (cpe-74-77-145-97.buffalo.res.rr.com [74.77.145.97]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: blueness) by smtp.gentoo.org (Postfix) with ESMTPSA id 31002340CDC for ; Tue, 28 Apr 2015 20:06:43 +0000 (UTC) Message-ID: <553FE89B.2000903@gentoo.org> Date: Tue, 28 Apr 2015 16:07:55 -0400 From: "Anthony G. Basile" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-dev@lists.gentoo.org Reply-to: gentoo-dev@lists.gentoo.org MIME-Version: 1.0 To: gentoo-dev@lists.gentoo.org Subject: Re: [gentoo-dev] Re: RFC: c++14 global USE flag References: <20150424194217.0176adc0@googlemail.com> <553A91F6.7080505@gentoo.org> <553BA02E.7000805@gentoo.org> <20150425152317.20001.qmail@stuge.se> In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Archives-Salt: 5fae184f-d75b-439d-881b-fd268dc4fa93 X-Archives-Hash: f94086492fc671ede1bc287344567b4d On 04/26/15 23:21, Duncan wrote: > Diego Elio Pettenò posted on Sun, 26 Apr 2015 17:41:04 +0100 as excerpted: > >> On 25 April 2015 at 16:57, Duncan <1i5t5.duncan@cox.net> wrote: >> >>> Of course, one thing that could make the process faster would be if C++ >>> based packages were marked some way. >> >> revdep-rebuild --soname 'libstdc\+\+.so.*' >> >> should do the trick. Stuff that does not link the library (statically >> linked or using libsupc++) should not really matter. > Thanks. Obvious in hindsight. =:^) > just saw this. This works unless you have two versions of gcc installed. The c++11 abi emitted by gcc-4.7 and 4.8 are different and since you link against the latest version (see the ordering of directories in /etc/ld.so.conf.d/05gcc-x86_64-pc-linux-gnu.conf), building with the earlier gcc can cause breakage. We may not want to support such a situation but I'd like to. -- Anthony G. Basile, Ph.D. Gentoo Linux Developer [Hardened] E-Mail : blueness@gentoo.org GnuPG FP : 1FED FAD9 D82C 52A5 3BAB DC79 9384 FA6E F52D 4BBA GnuPG ID : F52D4BBA