cotire doesn't pull c++ language version from dependencies from target_link_libraries leading to PCH errors on build

[xaxxon]

I have a interface library with

target_compile_features(MyLibrary INTERFACE cxx_std_17)

set on it.

elsewhere when I do an add_executable(MyExecutable and then target_link_library my MyLibrary interface library onto my executable, when I build it, I get the error while compiling the sources for MyExecutable

error: C++11 was disabled in PCH file but is currently enabled

if I explicitly put the C++ version on the MyExecutable with:

set_property(TARGET MyExecutable PROPERTY CXX_STANDARD 17)

then everything works, but that doesn't seem like it should be necessary since it's already being picked up for the build (just not the PCH build) by cmake.

[Naios]

I can confirm this bug

[dtmoodie]

I too can confirm this bug.

I had trouble finding this so this is the error message I get on gcc 5.4:

__cplusplus' defined as 201402L' not ` 201103L'