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

all: texte1-reperage lecon1-indices-de-la-personne

texte1-reperage: texte1-reperage.tex
	@latexmk -pdf texte1-reperage.tex
	@if ! cmp --silent build/texte1-reperage.pdf texte1-reperage_*.pdf; then \
		touch texte1-reperage_tmp.pdf; \
		rm texte1-reperage*.pdf; \
		cp build/texte1-reperage.pdf texte1-reperage_${timestamp}.pdf; \
		echo "Updated"; \
	fi

lecon1-indices-de-la-personne: lecon1-indices-de-la-personne.tex
	@latexmk -pdf lecon1-indices-de-la-personne.tex
	@if ! cmp --silent build/lecon1-indices-de-la-personne.pdf lecon1-indices-de-la-personne_*.pdf; then \
		touch lecon1-indices-de-la-personne_tmp.pdf; \
		rm lecon1-indices-de-la-personne*.pdf; \
		cp build/lecon1-indices-de-la-personne.pdf lecon1-indices-de-la-personne_${timestamp}.pdf; \
		echo "Updated"; \
	fi

lecon2-encore-un-drame-de-la-misere: lecon2-encore-un-drame-de-la-misere.tex
	@latexmk -pdf lecon2-encore-un-drame-de-la-misere.tex
	@if ! cmp --silent build/lecon2-encore-un-drame-de-la-misere.pdf lecon2-encore-un-drame-de-la-misere_*.pdf; then \
		touch lecon2-encore-un-drame-de-la-misere_tmp.pdf; \
		rm lecon2-encore-un-drame-de-la-misere*.pdf; \
		cp build/lecon2-encore-un-drame-de-la-misere.pdf lecon2-encore-un-drame-de-la-misere_${timestamp}.pdf; \
		echo "Updated"; \
	fi

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