[Dune] C++14 versus C++11 ?

[Christoph Grüninger]

Hi Benedikt,
it depends on the Dune version you are using. For 2.4.1 you
can specify the C++ version by setting 
DISABLE_CXX_VERSION_CHECK
to true and the CMake variable CXX_MAX_SUPPORTED_STANDARD to
11.
For Dune 3.0 we require C++14, at least as much as GCC 4.9
supports. As you are using it, I don't see a way around. You
could start patching the occurrences of C++14 code, but the
number of places will grow. Finally, you'd maintain a fork.

> In paticular, I use trilinos 12.6.3, gcc 6.1.0 and the 
> current git version of dune.
> 
> Now, it appears that trilinos is overstretched with C++14.

Overstreched sounds bloomy. I think it will be easier to
teach trilinos C++14, espescially as it tries to stay as
compatible as possible.

This might be related:
https://github.com/TriBITSPub/TriBITS/issues/127

Bye
Christoph

-- 
On the one hand [computer "science"] has components
of the purest of mathematics and on the other hand
of the dirtiest of engineering. -- A. Oettinger 1967