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

all: tp

tp: tp.tex
	@latexmk -pdf tp.tex
	@if ! cmp --silent build/tp.pdf tp_*.pdf; then \
		touch tp_tmp.pdf; \
		rm tp*.pdf; \
		cp build/tp.pdf tp_belghith_franken_${timestamp}.pdf; \
		echo "Updated"; \
	fi

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