%.c : %.flex
@$(RM) $@
$(FLEX) -t $(FLEX_OPTS) $< > $@ || ( $(RM) $@ && exit 1 )
+%.c : %.lex
+ @$(RM) $@
+ $(FLEX) -t $(FLEX_OPTS) $< > $@ || ( $(RM) $@ && exit 1 )
#-----------------------------------------------------------------------------
# Yacc stuff