--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/devkit/Tars.gmk	Fri Mar 15 09:13:31 2019 -0700
@@ -0,0 +1,49 @@
+#
+# Copyright (c) 2013, 2019, 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.
+#
+
+# This makefile creates the tar files. It needs to be called with make -r
+# which is why it's separated out into its own file.
+
+# Input parameters
+# SRC_DIR
+# TAR_FILE
+
+ifeq ($(SRC_DIR), )
+  $(error SRC_DIR not set)
+endif
+ifeq ($(TAR_FILE), )
+  $(error TAR_FILE not set)
+endif
+
+default: tars
+
+tars : $(TAR_FILE)
+
+$(TAR_FILE): $(shell find $(SRC_DIR) -type f)
+	@echo 'Creating compiler package $@'
+	cd $(dir $(SRC_DIR)) && tar -czf $@ $(notdir $(SRC_DIR))/*
+	touch $@
+
+.PHONY: default tars