rerun = "(There were undefined references|Rerun to get (cross-references|the bars) right)"

presentation_version.pdf: body.tex ../../planning/logo.pdf
	lualatex presentation_version.tex || rm presentation_version.pdf
	(egrep -q $(rerun) presentation_version.log && lualatex presentation_version.tex) || true

../../planning/logo.pdf: ../../planning/logo.tex
	cd ../../planning; $(MAKE)