--- a/make/Defs-internal.gmk	Thu Oct 04 14:35:10 2012 -0700
+++ b/make/Defs-internal.gmk	Wed Jul 05 18:25:03 2017 +0200
@@ -330,6 +330,10 @@
     PREVIOUS_MINOR_VERSION=$(PREVIOUS_MINOR_VERSION) \
     PREVIOUS_MICRO_VERSION=$(PREVIOUS_MICRO_VERSION)
 
+ifdef OPENJDK
+  COMMON_BUILD_ARGUMENTS += OPENJDK=$(OPENJDK)
+endif
+
 ifdef ARCH_DATA_MODEL
   COMMON_BUILD_ARGUMENTS += ARCH_DATA_MODEL=$(ARCH_DATA_MODEL)
 endif