if("icu" IN_LIST FEATURES)
    set(B2_REQUIREMENTS "<library>/user-config//icuuc <library>/user-config//icudt <library>/user-config//icuin <define>BOOST_HAS_ICU=1")
    if(APPLE)
        list(APPEND B2_OPTIONS cxxstd=11)
    endif()
else()
    list(APPEND B2_OPTIONS --disable-icu)
endif()