diff -r 50ef71b6fd3d -r dea8a62cdfc3 make/gensrc/GensrcModuleLoaderMap.gmk
--- a/make/gensrc/GensrcModuleLoaderMap.gmk	Tue Oct 09 07:33:15 2018 -0400
+++ b/make/gensrc/GensrcModuleLoaderMap.gmk	Tue Oct 09 14:57:23 2018 -0700
@@ -46,7 +46,7 @@
 $(SUPPORT_OUTPUTDIR)/gensrc/java.base/jdk/internal/module/ModuleLoaderMap.java: \
     $(TOPDIR)/src/java.base/share/classes/jdk/internal/module/ModuleLoaderMap.java \
     $(VARDEPS_FILE) $(BUILD_TOOLS_JDK)
-	$(MKDIR) -p $(@D)
+	$(call MakeTargetDir)
 	$(RM) $@ $@.tmp
 	$(TOOL_GENCLASSLOADERMAP) -boot $(BOOT_MODULES_LIST) \
 	     -platform $(PLATFORM_MODULES_LIST) -o $@.tmp $<