all: Formular-A4-zweiseitig.pdf

.PHONY: clean
clean:
	rm -f *.log *.out *.pdf *.aux

%.pdf: %.tex
	pdflatex "$<" -output-format=pdf

Formular-A4.pdf: Formular.pdf
	pdf2ps -dLanguageLevel=3 "$<" - | psnup -2 -Pa5 -pa4 | ps2pdf -dCompatibility=1.4 - "$@"

Formular-A4-zweiseitig.pdf: Formular-A4.pdf
	pdftk "$<" cat 1 1down output "$@"