--- a/make/CompileToolsJdk.gmk	Tue Jul 23 15:33:52 2019 -0400
+++ b/make/CompileToolsJdk.gmk	Fri Jul 26 08:56:28 2019 -0700
@@ -41,6 +41,7 @@
 BUILD_TOOLS_SRC_DIRS += \
     $(TOPDIR)/make/jdk/src/classes \
     $(BUILDTOOLS_OUTPUTDIR)/interim_cldrconverter_classes \
+    $(BUILDTOOLS_OUTPUTDIR)/interim_tzdb_classes \
     #
 
 $(eval $(call SetupJavaCompilation,BUILD_TOOLS_JDK, \