Hi Dave, > + GENERATED_OFILES := $(GENERATED_CFILES:.c=.o) > + NO_WERROR_COMPILE = $(subst Werror,Wno-error,$(COMPILE)) > Hmm. Won't this: > > NO_WERROR_COMPILE = $(COMPILE:Werror=Wno-error) > > do the desired trick? Yes it will. But is this construct also GNU Make specific ? Cheers Nick