--- psi3.orig/src/lib/libipv1/Makefile.in	2004-09-17 16:49:58.000000000 +0200
+++ psi3/src/lib/libipv1/Makefile.in	2010-02-15 15:30:23.846370463 +0100
@@ -33,10 +33,12 @@
 
 include ../MakeRules
 
-y.tab.c y.tab.h: parse.y
+y.tab.h: y.tab.c 
+
+y.tab.c: parse.y
 	$(YACC) -v -d $<
 
-scan.c: scan.l
+scan.c: scan.l y.tab.h
 	$(LEX) -t $^ > scan.c
 
 install_inc:: $(ALLINCLUDE)