--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/CreateHgtipFiles.gmk	Wed Jun 08 15:13:19 2016 +0200
@@ -0,0 +1,55 @@
+#
+# Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+#
+# This code is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 only, as
+# published by the Free Software Foundation.  Oracle designates this
+# particular file as subject to the "Classpath" exception as provided
+# by Oracle in the LICENSE file that accompanied this code.
+#
+# This code is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# version 2 for more details (a copy is included in the LICENSE file that
+# accompanied this code).
+#
+# You should have received a copy of the GNU General Public License version
+# 2 along with this work; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+# or visit www.oracle.com if you need additional information or have any
+# questions.
+#
+
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
+
+define SetupCreateHgtip
+
+  $$(strip $1)/$(HGTIP_FILENAME): FRC
+	$(HG) tip --repository $$(strip $1) --template '{node|short}\n' > $$@.tmp
+	if [ ! -f $$@ ] || [ "`$(CAT) $$@`" != "`$(CAT) $$@.tmp`" ]; then \
+	  $(MV) $$@.tmp $$@ ; \
+	else \
+	  $(RM) $$@.tmp ; \
+	fi
+
+  TARGETS += $$(strip $1)/$(HGTIP_FILENAME)
+
+endef
+
+# Only try to create the tips if finding an actual hg repository. This will be
+# false if building from a source bundle.
+$(foreach r, $(call FindAllReposAbs), \
+  $(if $(wildcard $r/.hg), $(eval $(call SetupCreateHgtip, $r))) \
+)
+
+all: $(TARGETS)
+
+FRC:
+
+.PHONY: all