[CMake] How to set C++ standard?

[Craig Scott]

You generally shouldn't set CMAKE_CXX_STANDARD on its own, you should also
be explicitly setting CMAKE_CXX_STANDARD_REQUIRED and CMAKE_CXX_EXTENSIONS
to ensure you are getting the behaviour you want. These would also
typically be set by the project's own CMakeLists.txt file rather than being
passed on the cmake command line as cache variables. You may find the
following article helpful:

https://crascit.com/2015/03/28/enabling-cxx11-in-cmake/



On Fri, Apr 21, 2017 at 8:57 AM, Alex Chen <alex_chen at filemaker.com> wrote:

> I tried to set the compiler flag –std=c++14 via cmake command line on
> Linux with –DCMAKE_CXX_STANDARD=14.  The message from ‘make’ shows   *-std=c++11
> –std=gnu++14*
>
> If I do not set that flag, I get *-std=c++11.  *This seem to imply the
> CMAKE_CXX_STANDARD flag sets *gnu++* instead of *c++.  *How do I set the
> flag –std=c++14 then?
>
>
>
> Alex Chen
>
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-- 
Craig Scott
Melbourne, Australia
https://crascit.com
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