[CMake] target_compile_features question

[Florian Lindner]

Am 05.11.2017 um 15:07 schrieb Jan Christoph Uhde:
> 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.

Hey,
just being curious, is cxx_std_17 a valid feature? I don't see it listed in https://cmake.org/cmake/help/v3.1/prop_gbl/CMAKE_CXX_KNOWN_FEATURES.html

Best,
Florian