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List:       kde-panel-devel
Subject:    Re: [plasma-framework] /: Revert "Enabling C++11 flags for clang and gcc"
From:       Kevin Ottens <ervin () kde ! org>
Date:       2013-06-28 12:58:24
Message-ID: 3507676.0YahjnV3St () wintermute
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On Friday 28 June 2013 07:33:43 Shaun Reich wrote:
> On Fri, Jun 28, 2013 at 7:08 AM, Kevin Ottens <ervin@kde.org> wrote:
> > On Friday 28 June 2013 11:02:25 Ivan Čukić wrote:
> >> On Friday 28 June 2013 08:13:32 Kevin Ottens wrote:
> >> > Git commit 597397b41f5450f24ddc784e0faa13133fed6bd5 by Kevin Ottens.
> >> > Committed on 28/06/2013 at 08:07.
> >> > Pushed by ervin into branch 'master'.
> >> > 
> >> > Revert "Enabling C++11 flags for clang and gcc"
> >> 
> >> This request [1] got a green light by Aaron [2] and Martin [3].
> > 
> > Just to clarify: It's not a "no-no" to using C++11, it's to make sure
> > we're
> > able to build without them.
> > 
> >> We could set it only for the shell, and not for the whole repository.
> > 
> > Is there a point of using libplasma2 out of the shell? Just wondering,
> > could impact the decision.
> > 
> > Assuming the answer to the question above is yes, then it could be a
> > compromise indeed. *But* in that case the build of the shell would have to
> > be automatically disabled when building without C++11 available.
> 
> What's the issue here?

We want to make KDE Frameworks as reusable as possible. Ideally, everywhere Qt 
can be present KDE Frameworks should be able to be present as well. That means 
we have to deal with compilers with no or partial support for C++11. BTW, they 
all have partial support... just happens that they lack different parts of the 
standard.

> Isn't the point of a dependency (on C++11) to make it required?

Well, we have required and optional dependencies. C++11 is not special in that 
regard, we can make it either required or optional.

> /me definitely thinks we should be moving forward on this front,

Sure, I personally welcome more uses of C++11 everywhere it makes sense. So in 
Applications and Workspaces I think it makes sense to start using it sooner 
than later so that distros are pushed toward it (although that raises the 
question of portability for applications, the ones targetting Microsoft 
Windows too might want to carefully pick which part of the standard they use). 
For Frameworks, the strategy has to be different: let's make sure they're 
working on a wide-range of platform and then you get extra goodies if C++11 is 
available, much better incentive in that area.

> especially since the main compilers are feature complete now (clang
> has excellent support for it).

In fact, currently gcc 4.8 is the one with the best C++11 support... but again 
systems with different compilers are in the scope of KDE Frameworks.

Regards.
-- 
Kévin Ottens, http://ervin.ipsquad.net

KDAB - proud supporter of KDE, http://www.kdab.com

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