tags 126035 pending thanks There was already code attempting to check for this situation in config: ifeq ($(USE_LANGUAGE_CHOOSER),true) ifneq ($(LINGUA),C) #error Since you are about to use language chooser you must set LINGUA variable to C endif endif Sadly, Make treats "#error" as a comment which renders this pretty harmless. I've checked in a new version which seems to work. p.