[cmake-developers] C++11 all features available?

[Jean-Michaël Celerier]

> Thread support would be nice because Autogen could be parallelized
perfectly.

oh please yes. moc generation is almost 10% of my build time.



-------
Jean-Michaël Celerier
http://www.jcelerier.name

On Mon, Aug 21, 2017 at 4:32 PM, Sebastian Holtermann <seblist at xwmw.org>
wrote:

> Am Montag, 21. August 2017, 10:04:28 CEST schrieben Sie:
> > On 08/21/2017 09:53 AM, Sebastian Holtermann wrote:
> > > it looks like C++11 is now a requirement for CMake itself.
> >
> > Yes.  We just merged this:
> >
> >   https://gitlab.kitware.com/cmake/cmake/merge_requests/1132
> >
> > but you beat us to the announcement.
>
> I saw the MR last week and was delighted. The iterator type naming in `for`
> loops drove me mad.
>
> > > But does this mean *all* the nice features from the std library can be
> > > used?
> > Not all.  We're still limited by some of the older C++11 compilers.
> > We'll have to see how things go on nightly builds.  As limitations
> > are found they can be documented in `Help/dev/source.rst`.
> >
> > We will require std::unique_ptr at least.
> >
> > >  - std::array
> >
> > I think so but haven't tried it.
> >
> > >  - std::basic_regex (and friends)
> >
> > We still support GCC 4.8.  IIRC its standard library doesn't have
> > the implementations in place.
>
> That's a pitty, because cmsys::RegularExpression isn't thread safe.
> Although it might be possible to make it so in a reasonable amount of time
>
> > >  - std::thread (and friends)
> >
> > No, at least not yet.  For now we're using libuv's thread primitives
> > instead.  Either way anything that needs to build during bootstrap
> > may not be able to use this.
> >
> > >  - std::atomic_flag
>
> Thread support would be nice because Autogen could be parallelized
> perfectly.
> Only it would require several utility methods to be thread safe as well.
> Many
> likely aren't though. I'll have a look at libuv.
>
> -Sebastian
>
>
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