diff -r 4ebc2e2fb97c -r 71c04702a3d5 make/langtools/build.properties
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/langtools/build.properties	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,62 @@
+#
+# Copyright (c) 2007, 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.
+#
+
+#javac configuration for "normal build" (these will be passed to the bootstrap compiler):
+javac.opts = -XDignore.symbol.file=true -Xlint:all,-deprecation,-options,-exports -Werror -g:source,lines,vars
+javac.source = 9
+javac.target = 9
+
+#version used to compile build tools
+javac.build.opts = -XDignore.symbol.file=true -Xlint:all,-deprecation,-options -Werror -g:source,lines,vars
+javac.build.source = 8
+javac.build.target = 8
+
+langtools.resource.includes = \
+        com/sun/tools/javac/resources/compiler.properties
+
+# Version info -- override as needed
+jdk.version = 9
+build.number = b00
+milestone = internal
+
+# FIXME -- these need to match the standard values
+# If we include date in full.version (ie for developer build)
+# we will need to make sure the build is idempotent (i.e.
+# repeated builds don't rebuild the tools, because of new
+# timestamps
+# FIXME -- need to include openjdk as needed
+release = ${jdk.version}-${milestone}
+full.version = ${release}+${build.number}
+
+#tools configuration:
+tool.javac.main.class=com.sun.tools.javac.Main
+tool.javadoc.main.class=jdk.javadoc.internal.tool.Main
+tool.javap.main.class=com.sun.tools.javap.Main
+tool.javah.main.class=com.sun.tools.javah.Main
+tool.sjavac.main.class=com.sun.tools.sjavac.Main
+tool.jshell.main.class=jdk.internal.jshell.tool.JShellToolProvider
+
+#test configuration:
+jtreg.tests=