Makefile

   1 exam.pdf: exam.dvi
   2         dvips -f < $< | ps2pdf - > $@
   3
   4 exam.dvi: exam.tex first.tex second.tex third.tex
   5         latex $<
   6         latex $<
   7
   8 clean:
   9         $(RM) -v $(addprefix exam.,pdf aux log dvi)