RUSTC				?=	rustc

RUSTCFLAGS			:=

EXES				:=	false printenv true yes cat whoami
TESTS				:=	cat

EXES_PATHS			:=	$(addprefix build/,$(EXES))

command				=	sh -c '$(1)'

define EXE_BUILD
build/$(1):			$(1)/$(1).rs
	$(call command,$(RUSTC) $(RUSTCFLAGS) -o build/$(1) $(1)/$(1).rs)
endef

define TEST_BUILD
test_$(1):			tmp/$(1)_test
	$(call command,tmp/$(1)_test)

tmp/$(1)_test:	$(1)/test.rs
	$(RUSTC) $(RUSTCFLAGS) -o tmp/$(1)_test $(1)/test.rs
endef

all:				build $(EXES_PATHS)

test:				tmp $(addprefix test_,$(TESTS))
	rm -rf tmp

clean:
	rm -rf build tmp

build:
	mkdir build

tmp:
	mkdir tmp

$(foreach exe,$(EXES),$(eval $(call EXE_BUILD,$(exe))))
$(foreach test,$(TESTS),$(eval $(call TEST_BUILD,$(test))))

.PHONY:				all test clean