-SRC = addsuffix(BASE, `dtx')
-DVI = addsuffix(BASE, `dvi') mdwtools.dvi
+AUX = mdwtools.tex gpl.tex
+SRC = addsuffix(BASE, `.dtx')
+DVI = addsuffix(BASE, `.dvi') mdwtools.dvi
+PS = addsuffix(BASE, `.ps') mdwtools.ps
+PDF = addsuffix(BASE, `.pdf') mdwtools.pdf