timestamped_file=$(shell date +%Y-%m-%d_%H:%M)

all: ecrit oral

ecrit: plaidoyer.tex
	@latexmk -pdf plaidoyer.tex
	@if ! cmp --silent build/plaidoyer.pdf plaidoyer_*.pdf; then \
		touch plaidoyer_tmp.pdf; \
		rm plaidoyer*.pdf; \
		cp build/plaidoyer.pdf plaidoyer_${timestamped_file}.pdf; \
		echo "Updated"; \
	fi

oral: presentation.tex
	@latexmk -pdf presentation.tex
	@if ! cmp --silent build/presentation.pdf presentation_*.pdf; then \
		touch presentation_tmp.pdf; \
		rm presentation*.pdf; \
		cp build/presentation.pdf presentation_${timestamped_file}.pdf; \
		echo "Updated"; \
	fi

clean:
	@rm -rf build 2>/dev/null