include(CheckCXXCompilerFlag)
check_cxx_compiler_flag(--std=c++${CMAKE_CXX_STANDARD} STD_CXX)
if (STD_CXX)
- list(APPEND CMAKE_CXX_FLAGS --std=c++${CMAKE_CXX_STANDARD})
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --std=c++${CMAKE_CXX_STANDARD}")
else ()
message(SEND_ERROR "Requires C++${CMAKE_CXX_STANDARD} or better")
endif ()