.PHONY: all
all: $(patsubst %.tex,%.pdf,$(wildcard *.tex))
%-sitzung.pdf: %-sitzung.tex podcastproto.cls
latexmk -xelatex $<
clean:
rm -f \
*.aux \
*.fdb_latexmk \
*.fls \
*.log \
*.out \
*.pdf \
*.synctex.gz \
*.toc \
*.xdv