--- bt_sh/Makefile.in.orig	2009-03-24 22:07:42.000000000 +0100
+++ bt_sh/Makefile.in	2009-03-24 22:09:38.000000000 +0100
@@ -26,6 +26,8 @@
 
 build: bt_sh
 
+$(OBJS): nodes.h syntax.h builtins.h
+
 bt_sh: ${GENSRCS} ${ARITHSRCS} ${OBJS}
 	${CC} ${OBJS} -o bt_sh ${LDFLAGS}
 	${STRIP} bt_sh