[CMake] [CMAKE] target_compile_features question

[Jan Christoph Uhde]

Sorry for the noise!

I just noticed that I made a mistake in the shared lib version. I have
obviously to use PUBLIC instead of INTERFACE, when specifying compile
features.

Jan

On 2017-11-05 15:07, Jan Christoph Uhde wrote:
> Hi,
> 
> I have a project using CMake 3.9.
> The project contains a header only library mylib.
> The library hast set the following property:
> 
>     target_compile_features(mylib INTERFACE cxx_std_17)
> 
> Now I try to add otherlib to mylib (INTERFACE as well). otherlib has set
> some c++11 compile_features.
> 
> When I try to compile tests for my lib I see gnu++11 as requested
> standard. Without otherlib gnu++17 is selected.
> 
> Could this be a bug or I am using CMake in a wrong way. What is the best
> way to set the required standard for a header-only library?
> 
> Thank You
> 
> Jan
> 
> 
> https://travis-ci.org/ObiWahn/libobi/builds/297542567
> https://github.com/ObiWahn/libobi/blob/cmake_problem/CMakeLists.txt#L31
> - mylib
> https://github.com/kvasir-io/mpl/blob/development/CMakeLists.txt#L11 -
> otherlib
>