--- a/hotspot/make/defs.make	Mon Oct 14 21:52:42 2013 -0400
+++ b/hotspot/make/defs.make	Tue Oct 15 08:25:43 2013 -0700
@@ -77,6 +77,16 @@
 @$(RM) $@
 $(CP) $< $@
 endef
+
+# MacOS X strongly discourages 'cp -r' and provides 'cp -R' instead.
+# May need to have a MacOS X specific definition of install-dir
+# sometime in the future.
+define install-dir
+@$(MKDIR) -p $(@D)
+@$(RM) -r $@
+$(CP) -r $< $@
+endef
+
 define prep-target
 @$(MKDIR) -p $(@D)
 @$(RM) $@