$(eval $(call STANDARD_PUZZLE, steg)) STEG_SUBMAKES = $(wildcard packages/steg/*/Makefile) STEG_SUBCLEANS = $(patsubst %/Makefile, %/clean, $(STEG_SUBMAKES)) steg-clean: $(STEG_SUBCLEANS) packages/steg/%/clean: $(MAKE) -C $(@D) clean