TOP := $(dir $(lastword $(MAKEFILE_LIST)))
LEAN_FILES = $(shell find . -type f -name '*.lean')
OLEAN_FILES = $(LEAN_FILES:.lean=.olean)
DEP_FILES = $(LEAN_FILES:.lean=.d)
SED = sed

all: $(OLEAN_FILES) $(DEP_FILES)

%.olean: %.lean
	$(LEAN) $(LEAN_OPTIONS) $< -o $@

%.olean: %.lua
	$(LEAN) $(LEAN_OPTIONS) $< -o $@

%.d: %.lean
	@echo Making dependency file \'$@\' ...
	@echo -n "$(basename $@).olean : $< $@ " > $@.tmp.1
	@$(LEAN) --deps $< | $(SED) -e ':a;N;$$!ba;s/\n/ /g' > $@.tmp.2
	@cat $@.tmp.1 $@.tmp.2 > $@
	@rm -f $@.tmp.1
	@rm -f $@.tmp.2

include $(LEAN_FILES:.lean=.d)

.PHONY: all clean

clean:
	rm -f *.olean *.d *.d.tmp.1 $.d.tmp.2