PKG=ide
DEP=$(PKG)

define get-upp
 $(if $(findstring /,$1),$1/$(notdir $1).upp,$1/$1.upp)
endef

define get-uses
 $(strip $(shell cat $(call get-upp,$1) | tr ",\n;" "  \n" | grep "uses" | sed 's/(.*)//'))
endef

define get-deps
 $(sort $1 $(foreach d,$(sort $(subst \,/,$(filter-out uses%,$(call get-uses,$1)))),$(call get-deps,$d)))
endef

.PHONY: all

all:
	@echo "To build $(PKG) following packages are needed:"
	@echo "$(call get-deps,$(PKG))"