if(CMAKE_VERSION VERSION_LESS "3.1")
include(CheckCXXCompilerFlag)
CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
- if(COMPILER_SUPPORTS_CXX11)
- set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
- else()
- message(FATAL_ERROR "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support.")
+ if(NOT COMPILER_SUPPORTS_CXX11)
+ message(FATAL_ERROR
+ "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support.")
endif()
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
else()
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_EXTENSIONS OFF)
+ set(CMAKE_CXX_STANDARD_REQUIRED ON)
endif()
## Handle diagnostics color if compiler supports them.