--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/gensrc/GensrcCharsetMapping.gmk	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,56 @@
+#
+# Copyright (c) 2011, 2014, 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.
+#
+
+################################################################################
+#
+# Generate StandardCharsets.java and individul sun.nio.cs charset class using
+# the charsetmapping tool
+#
+CHARSET_DATA_DIR := $(JDK_TOPDIR)/make/data/charsetmapping
+CHARSET_EXTSRC_DIR := $(JDK_TOPDIR)/src/jdk.charsets/share/classes/sun/nio/cs/ext
+CHARSET_GENSRC_JAVA_DIR_BASE := $(SUPPORT_OUTPUTDIR)/gensrc/java.base/sun/nio/cs
+CHARSET_DONE_BASE := $(CHARSET_GENSRC_JAVA_DIR_BASE)/_the.charsetmapping
+CHARSET_COPYRIGHT_HEADER := $(JDK_TOPDIR)/make/src/classes/build/tools/charsetmapping
+CHARSET_TEMPLATES := \
+    $(CHARSET_DATA_DIR)/SingleByte-X.java.template \
+    $(CHARSET_DATA_DIR)/DoubleByte-X.java.template
+CHARSET_STANDARD_JAVA_TEMPLATES := \
+    $(JDK_TOPDIR)/src/java.base/share/classes/sun/nio/cs/StandardCharsets.java.template
+CHARSET_STANDARD_OS := stdcs-$(OPENJDK_TARGET_OS)
+
+$(CHARSET_DONE_BASE)-stdcs: $(CHARSET_DATA_DIR)/charsets \
+    $(wildcard $(CHARSET_DATA_DIR)/$(CHARSET_STANDARD_OS)) \
+    $(CHARSET_TEMPLATES) $(CHARSET_STANDARD_JAVA_TEMPLATES) \
+    $(BUILD_TOOLS_JDK)
+	$(call LogInfo, Generating java.base charset mapping)
+	$(call MakeDir, $(@D))
+	$(TOOL_CHARSETMAPPING) $(CHARSET_DATA_DIR) $(CHARSET_GENSRC_JAVA_DIR_BASE) \
+	    stdcs charsets $(CHARSET_STANDARD_OS) \
+	    $(CHARSET_STANDARD_JAVA_TEMPLATES) $(CHARSET_EXTSRC_DIR) \
+	    $(CHARSET_COPYRIGHT_HEADER) \
+            $(LOG_DEBUG)
+	$(TOUCH) '$@'
+
+GENSRC_JAVA_BASE += $(CHARSET_DONE_BASE)-stdcs