From: Santiago Vila <sanvila@debian.org>
Subject: Remove generated files in clean target

--- a/makefile
+++ b/makefile
@@ -97,7 +97,7 @@
 	./REGRESS
 
 clean: testclean
-	rm -f a.out *.o *.obj maketab maketab.exe *.bb *.bbg *.da *.gcov *.gcno *.gcda # proctab.c
+	rm -f a.out *.o *.obj maketab maketab.exe *.bb *.bbg *.da *.gcov *.gcno *.gcda proctab.c ytab.c ytab.h
 
 cleaner: testclean
 	rm -f a.out *.o *.obj maketab maketab.exe *.bb *.bbg *.da *.gcov *.gcno *.gcda proctab.c awkgram.tab.*