Gentoo Archives: gentoo-dev

From: hasufell <hasufell@g.o>
To: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] gcc-5 news item wrt C++ ABI
Date: Sat, 03 Oct 2015 23:17:05
Message-Id: 561061E3.6070706@gentoo.org
In Reply to: [gentoo-dev] gcc-5 news item wrt C++ ABI by Mike Frysinger
1 On 10/03/2015 04:13 AM, Mike Frysinger wrote:
2 > Title: GCC 5 Defaults to the New C++11 ABI
3 > Author: Mike Frysinger <vapier@g.o>
4 > Content-Type: text/plain
5 > Posted: 2015-10-02
6 > Revision: 1
7 > News-Item-Format: 1.0
8 > Display-If-Installed: >=sys-devel/gcc-5
9 >
10 > GCC 5 uses the new C++ ABI by default. When building new code, you might run
11 > into link time errors like:
12 > ...: undefined reference to '_ZNSt6chrono12steady_clock3nowEv@GLIBCXX_3.4.17'
13 > Or you might see linkage failures with "std::__cxx11::string" in the output.
14 >
15 > These are signs that you need to rebuild packages using the new C++ ABI.
16 > You can quickly do so by using revdep-rebuild like so:
17 > # revdep-rebuild --library 'libstdc\+\+\.so\.6'
18 >
19
20 We shouldn't assume a particular PM/toolset in news items, IMO. Just
21 saying that people might have to rebuild packages linked against
22 libstdc++.so.6 should be enough.
23
24 They can read the docs if they don't know how.

Replies

Subject Author
Re: [gentoo-dev] gcc-5 news item wrt C++ ABI "Anthony G. Basile" <blueness@g.o>
Re: [gentoo-dev] gcc-5 news item wrt C++ ABI Mike Frysinger <vapier@g.o>
Re: [gentoo-dev] gcc-5 news item wrt C++ ABI "Michał Górny" <mgorny@g.o>