--- a/hotspot/make/windows/create_obj_files.sh	Tue Mar 15 10:56:32 2016 +0000
+++ b/hotspot/make/windows/create_obj_files.sh	Tue Mar 15 13:55:23 2016 +0100
@@ -55,7 +55,11 @@
 ALTSRC_REL=src/closed # Change this to pick up alt sources from somewhere else
 
 COMMONSRC=${WorkSpace}/${COMMONSRC_REL}
-ALTSRC=${WorkSpace}/${ALTSRC_REL}
+if [ "x$OPENJDK" != "xtrue" ]; then
+  ALTSRC=${WorkSpace}/${ALTSRC_REL}
+else
+  ALTSRC=PATH_THAT_DOES_NOT_EXIST
+fi
 
 BASE_PATHS="`if [ -d ${ALTSRC}/share/vm ]; then $FIND ${ALTSRC}/share/vm ! -name vm -prune -type d \! \( -name adlc -o -name c1 -o -name gc -o -name opto -o -name shark -o -name libadt \); fi`"
 BASE_PATHS="${BASE_PATHS} ` $FIND ${COMMONSRC}/share/vm ! -name vm -prune -type d \! \( -name adlc -o -name c1 -o -name gc -o -name opto -o -name shark -o -name libadt \)`"