My LaTeX-Makefile

.PHONY: all clean
.DEFAULT: all

target=Uebung01.pdf Uebung02.pdf Ergaenzung01.pdf

PLTX=xelatex -interaction=batchmode

all_tgs=$(target) $(target:.pdf=_2col.pdf) $(target:.pdf=_lsg.pdf) $(target:.pdf=_beamer.pdf) $(target:.pdf=_beamerlsg.pdf) $(target:.pdf=_lsg2col.pdf)

all: $(all_tgs) warnings overunderfulls

# collect warnings into one file
warnings: $(all_tgs:.pdf=.log)
    grep -i warning *.log > warnings

# collect overfull and underfull boxes into one file
overunderfulls: $(all_tgs:.pdf=.log)
    grep erfull *.log > overunderfulls

clean:
    rm -rf *.aux *.toc *.nav *.log *.out *.snm $(all_tgs) warnings overunderfuls

# PDF COMPILATION
%.pdf %.log: %.aux
    $(PLTX) -jobname=$* $(firstword $(subst _, ,$*)) > /dev/null

.SECONDEXPANSION:
# AUX CREATION
%.aux: $$(firstword $$(subst _, ,%)).tex
    $(PLTX) -jobname=$* $+ > /dev/null