include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)

macro(RemoveFlag FLAG)
  string(REPLACE "${FLAG}" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
  string(REPLACE "${FLAG}" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
endmacro()

macro(CheckAndSetFlag FLAG)
  get_property(languages GLOBAL PROPERTY ENABLED_LANGUAGES)

  unset(C_FLAG)
  unset(CXX_FLAG)
  if("C" IN_LIST languages)
    check_c_compiler_flag("${FLAG}" C_FLAG)
    if(C_FLAG)
      string(APPEND CMAKE_C_FLAGS " ${FLAG}")
    endif()
  endif()

  if("CXX" IN_LIST languages)
    check_cxx_compiler_flag("${FLAG}" CXX_FLAG)
    if(CXX_FLAG)
      string(APPEND CMAKE_CXX_FLAGS " ${FLAG}")
    endif()
  endif()

  if(NOT C_FLAG AND NOT CXX_FLAG)
    message(WARNING "compiler does not support ${FLAG}")
  endif()
endmacro()