-WX_ARG_FEATURE(sound, [ --enable-sound use wxSound class], wxUSE_SOUND)
-WX_ARG_FEATURE(mediactrl, [ --enable-mediactrl use wxMediaCtrl class], wxUSE_MEDIACTRL)
-WX_ARG_FEATURE(gstreamer8, [ --enable-gstreamer8 force GStreamer 0.8 instead of 0.10 with the wxMediaCtrl class on unix], wxUSE_GSTREAMER8)
-WX_ARG_FEATURE(printfposparam,[ --enable-printfposparam use wxVsnprintf() which supports positional parameters], wxUSE_PRINTF_POS_PARAMS)
+WX_ARG_FEATURE(variant, [ --enable-variant use wxVariant class], wxUSE_VARIANT)
+WX_ARG_FEATURE(weakref, [ --enable-weakref make wxEvtHandler trackable with wxWeakRef<>], wxUSE_WEAKREF)