BULLETINS := $(wildcard bulletins/*.lytex)

all: $(foreach bulletin,$(BULLETINS),output/$(notdir $(basename $(bulletin))).pdf)

# Declare dependencies dynamically
$(foreach bulletin,$(BULLETINS), \
	$(eval output/$(notdir $(basename $(bulletin))).pdf: $(bulletin)) \
)

output/%.pdf:
	mkdir -p output cache; \
	date=$(basename $(notdir $@)); \
	lilypond-book --output=cache --pdf bulletins/$$date.lytex && \
	(cd cache && lualatex $$date.tex) && \
	mv cache/$$date.pdf output/

clean:
	rm -rf output cache

.PHONY: all clean