ARTIFACT         = PoolBox
make_assets      = $(MAKE) $(1) ARTIFACT=$(ARTIFACT) -C assets
make_application = $(MAKE) $(1) ARTIFACT=$(ARTIFACT) -C application
make_cd          = $(MAKE) $(1) ARTIFACT=$(ARTIFACT) -C iso

all clean rebuild: |assets_$(MAKECMDGOALS) application_$(MAKECMDGOALS) cd_$(MAKECMDGOALS)  

all_%: always
	$(call make_assets,$*)
	$(call make_application,$*)
	$(call make_cd,$*)

assets_%: always
	$(call make_assets,$*)
application_%: always
	$(call make_application,$*)
cd_%: always
	$(call make_cd,$*)

always: ;