IF (WIN32)
    add_compile_options("$<$<C_COMPILER_ID:MSVC>:/utf-8>")
    add_compile_options("$<$<CXX_COMPILER_ID:MSVC>:/utf-8>")
    set(CMAKE_CXX_FLAGS_RELEASE "/MT")
ELSEIF (APPLE)
    MESSAGE(STATUS "Now is Apple systens.")
ELSEIF (UNIX)
    MESSAGE(STATUS "Now is UNIX-like OS's. Including Apple os x  and CygWin")
ENDIF ()