build 'updater' binary for use in OTA packages
diff --git a/core/Makefile b/core/Makefile
index 824fc79..37df389 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -844,7 +844,8 @@
 
 built_ota_tools := \
 	$(call intermediates-dir-for,EXECUTABLES,applypatch)/applypatch \
-	$(call intermediates-dir-for,EXECUTABLES,check_prereq)/check_prereq
+	$(call intermediates-dir-for,EXECUTABLES,check_prereq)/check_prereq \
+	$(call intermediates-dir-for,EXECUTABLES,updater)/updater
 $(BUILT_TARGET_FILES_PACKAGE): PRIVATE_OTA_TOOLS := $(built_ota_tools)
 
 # Depending on the various images guarantees that the underlying