diff -r 000000000000 -r 6474c204b198 browser/app-rules.mk
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/app-rules.mk	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,4 @@
+PURGECACHES_DIRS = $(DIST)/bin/browser
+ifdef MOZ_METRO
+PURGECACHES_DIRS += $(DIST)/bin/metro
+endif