Re: Using C++11

[Murray Cumming <murrayc murrayc com>]

On Tue, 2015-06-30 at 12:16 +0100, Chris Vine wrote:
> On Tue, 30 Jun 2015 12:06:46 +0200
> Murray Cumming <murrayc murrayc com> wrote:
>
> > On Tue, 2015-06-30 at 10:53 +0100, Chris Vine wrote:
> > > On Tue, 30 Jun 2015 08:32:43 +0200
> > > Murray Cumming <murrayc murrayc com> wrote:
> > > > On Mon, 2015-06-29 at 19:44 +0100, Chris Vine wrote:
> > > > [snip]
> > > > > Fedora 23, which will use gcc-5.1 with the new ABI, will have to
> > > > > recompile all its C++ binaries (libraries and programs)[1], for
> > > > > all versions of C++ those libraries and programs may happen to
> > > > > use.
> > > > [snip]
> > > >
> > > > And would you agree that Ubuntu (for instance) will have to do the
> > > > same thing when C++11 (--std=c++11) becomes the default in g++ 6,
> > > > when they use g++ 6?
> > >
> > > No.  Assuming gcc-6 still provides libstdc++ with both ABIs (my
> > > guess is that gcc will do so for a considerable number of
> > > releases), then it would depend on whether ubuntu chooses to use
> > > the new ABI instead of the old one for its C++ binaries.
> >
> > Isn't Ubuntu likely to make the same choice that Fedora has made, at
> > least at some point?
> >
> > Or is Fedora just doing this (using the C++11 libstdc++ API) because
> > they really like C++11 and want to make the C++11 experience as good
> > as possible?
>
> I would guess that it is because fedora is a fast moving distribution
> and they like to press ahead with what everyone will be doing in a few
> years' time.
[snip]

Debian seem to be at the same stage in the decision (maybe together) as
Ubuntu:
https://wiki.debian.org/GCC5
That also mentions that OpenSuse will do what Fedora is doing - breaking
ABI.

-- 
Murray Cumming
murrayc murrayc com
www.murrayc.com