--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/CompileInterimLangtools.gmk	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,68 @@
+#
+# Copyright (c) 2014, 2017, 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 must be the first rule
+default: all
+
+include $(SPEC)
+include MakeBase.gmk
+include JavaCompilation.gmk
+include SetupJavaCompilers.gmk
+
+################################################################################
+# Setup the rules to build interim langtools, which is compiled by the boot
+# javac and can be run on the boot jdk. This will be used to compile
+# the rest of the product. Each module is compiled separately to allow a modular
+# boot jdk to override system classes using -Xoverride:.
+
+# Param 1 - Name of module to compile
+# Param 2 - Name of modules to depend on
+define SetupInterimModule
+  $$(eval $$(call SetupJavaCompilation,BUILD_INTERIM_$(strip $1), \
+      SETUP := BOOT_JAVAC, \
+      DISABLE_SJAVAC := true, \
+      SRC := $(LANGTOOLS_TOPDIR)/src/$(strip $1)/share/classes \
+          $$(wildcard $(SUPPORT_OUTPUTDIR)/gensrc/$(strip $1)), \
+      EXCLUDES := sun com/sun/tools/jdeps com/sun/tools/javap \
+          com/sun/tools/jdeprscan, \
+      EXCLUDE_FILES := module-info.java JavacToolProvider.java \
+	  JavadocToolProvider.java Standard.java, \
+      COPY := .gif .png .xml .css .js javax.tools.JavaCompilerTool, \
+      BIN := $(BUILDTOOLS_OUTPUTDIR)/override_modules/$(strip $1), \
+      ADD_JAVAC_FLAGS := -Xbootclasspath/p:$$(call PathList, \
+          $$(foreach m, $2, $(BUILDTOOLS_OUTPUTDIR)/override_modules/$$m)), \
+  ))
+
+  $$(BUILD_INTERIM_$(strip $1)): $$(foreach m, $2, $$(BUILD_INTERIM_$(strip $$m)))
+
+  TARGETS += $$(BUILD_INTERIM_$(strip $1))
+endef
+
+$(eval $(call SetupInterimModule, java.compiler))
+$(eval $(call SetupInterimModule, jdk.compiler, java.compiler))
+$(eval $(call SetupInterimModule, jdk.jdeps, jdk.compiler java.compiler))
+$(eval $(call SetupInterimModule, jdk.javadoc, java.compiler jdk.compiler))
+
+all: $(TARGETS)