[vtk-developers] VTK forces -std=c++11 ?

[Brad King]

On 1/11/19 2:59 PM, Sean McBride wrote:
> In cmake I set CMAKE_CXX_FLAGS to "-std=c++2a" but when I do "make VERBOSE=1"
> I see that something is passing -std=c++11:
> 
> Is this a bug?  If not, how do I specify the language variant?

It's likely CMake adding it based on Common/Core/CMakeLists.txt:

```
vtk_module_compile_features(VTK::CommonCore
  PUBLIC
    cxx_std_11
    cxx_nullptr
    cxx_override)
```

There is an open CMake issue about handling future standards:

  https://gitlab.kitware.com/cmake/cmake/issues/17146#note_300071

Lacking a full solution in CMake, VTK could gain an option to not
specify these feature requirements.

-Brad