To C++11 or not?

[Albert Astals Cid]

El divendres, 30 de desembre de 2016, a les 12:24:38 CET, Luigi Toscano va 
escriure:
> Il 30 dicembre 2016 10:30:22 CET, Kevin Funk <kfunk at kde.org> ha scritto:
> >Following-up on this thread, since I saw some more discussion about
> >C++11
> >
> >usage in this RR:
> >  https://git.reviewboard.kde.org/r/129724/
> >
> >Let's put this into some concrete actions, finally. I think we all
> >agree
> >nullptr & override are probably the most apparent issues (since
> >compilers
> >started to warn about both), and *having* 'override' is actually super
> >useful
> >for preventing programmer faults.
> >
> >Let's just speak about allowing nullptr & override, allowing the full
> >set of C
> >++11 is *not* feasible. Reason: Lot's of C++11 feature are only
> >available only
> >in MSVC2015, so we'd just be able to support the latest VS. See [2].
> >
> >Looking at [1] I still see we list GCC 4.5 as minimum requirement.
> >That's
> >pretty ancient. 4.5.1 got released Jul 2010 [3]
> >
> >If we raise that to GCC 4.6 (4.6.0 being released Mar 2011), we can use
> >
> >'nullptr' unconditionally. ktexteditor already did that in public
> >headers for
> >quite some time -- no-one complained.
> >
> >If we raise that to GCC 4.7 (4.7.0 being released Mar 2012), we can use
> >
> >'override' unconditionally *.
> >
> >We already use MSVC2012 as min VS dep, this version has full nullptr &
> >override support. I don't see anyone using MSVC2010 for compiling KF5
> >to be
> >honest...
> >
> >Proposal for [1]:
> >- Raise min GCC version to 4.7
> >- Allow to use override unconditionally
> >- Allow to use nullptr unconditonally
> >
> >ACK?
> >
> >
> >PS: I can do the work, I can script the refactoring with clang-tidy.
> >
> >Let's move forward please.
> 
> Hi, this is a really good analysis (also for future reference). In order to
> complete it, given that the original idea was "follow Qt's requirement",
> and that we increased in time the required version of Qt, what is the
> current status regarding compilers and Qt?

Our min requirement is Qt 5.5 which according to 
http://doc.qt.io/qt-5/supported-platforms-and-configurations.html
compiles with GCC 4.6 (Qt 5.6 has the same supported GCC it seems)

Cheers,
  Albert

> 
> Ciao