all: build assemble

rwildcard=$(foreach d,$(wildcard $(1:=/*)),$(call rwildcard,$d,$2) $(filter $(subst *,%,$2),$d))

.PHONY: build
build:
	mkdir -p build
	javac -Xlint $(shell find src -type f -name '*.java') -d build

assemble:
	cd build/; jar cvmf ../MANIFEST.MF ../Elevator.jar $(patsubst %,'%',$(shell cd build; find -name '*.class'))

clean:
	-rm -r build/*