cmake_policy(SET CMP0063 NEW) enable_language(CXX) # Ensure CMake would warn even if toolchain does not really have these flags. set(CMAKE_CXX_COMPILE_OPTIONS_VISIBILITY_INLINES_HIDDEN "-fvisibility-inlines-hidden") set(CMAKE_CXX_COMPILE_OPTIONS_VISIBILITY "-fvisibility=") include(CMP0063-Common.cmake)