--- a/components/timezone/Makefile	Thu Mar 19 14:35:58 2015 -0700
+++ b/components/timezone/Makefile	Thu Mar 19 20:44:31 2015 -0700
@@ -37,10 +37,9 @@
 	 factory northamerica pacificnew solar87 solar88 solar89 \
 	 southamerica backward
 
-include ../../make-rules/ips.mk
+include $(WS_MAKE_RULES)/ips.mk
 
 # This package delivers only data files and has no dependencies.
-EXTDEPFILES = $(NULLDEPFILE)
 
 POFILE=zoneinfo.po
 
@@ -64,5 +63,4 @@
 
 clobber: clean
 
-include ../../make-rules/depend.mk