Gentoo Archives: gentoo-dev

From: Matt Turner <mattst88@g.o>
To: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] GCC upgrades, FUD and gentoo documentation
Date: Sun, 09 Oct 2011 00:20:44
Message-Id: CAEdQ38FXZH6GgU0o2HxfsUNp3s4PaJJQNM8M6a-P5D6HfP8P8A@mail.gmail.com
In Reply to: Re: [gentoo-dev] GCC upgrades, FUD and gentoo documentation by James Cloos
On Sat, Oct 8, 2011 at 6:57 PM, James Cloos <cloos@×××××××.com> wrote:
>>>>>> "SV" == Sven Vermeulen <swift@g.o> writes: > > SV> - Since 3.4.0/4.1.0, the C++ ABI is forward-compatible, so rebuilds > SV>   from that version onwards should not be needed > > That is not generally true. > > I use gcc-4.5 as my system gcc, but mostly use 4.6 when building things > outside of portage.  I still run into compilation errors with C++ which > go away if I compile said code with 4.5. > > GCC’s C++ abi is only *mostly* forwards compatible, not *entirely*.
Is that a problem with the ABI, or just that gcc-4.6 is more strict? I think it's the latter. Matt

Replies

Subject Author
Re: [gentoo-dev] GCC upgrades, FUD and gentoo documentation James Cloos <cloos@×××××××.com>