MACRO(ENABLE_WARNINGS flag)
ADD_C_FLAG_IF_SUPPORTED(-W${flag})
ENDMACRO()
MACRO(DISABLE_WARNINGS flag)
ADD_C_FLAG_IF_SUPPORTED(-Wno-${flag})
ENDMACRO()
IF(ENABLE_WERROR)
IF(MSVC)
ADD_COMPILE_OPTIONS(-WX)
ELSE()
ADD_C_FLAG_IF_SUPPORTED(-Werror)
ENDIF()
ENDIF()