all: mqac_vs_zhang.png \
     mqau_vs_zhang.png \
     mqao_vs_zhang.png \
     mqac_vs_sam08.png \
     mqau_vs_sam08.png \
     mqao_vs_sam08.png 

%.png: %.eps
	convert $< $@

%.eps: 	%.gnuplot 
	(echo set terminal postscript eps monochrome 20; cat  $^) | gnuplot > $@

clean:
	rm *.eps *.png

.SECONDARY: