--- a/jdk/make/copy/Copy-java.base.gmk	Thu Mar 26 11:59:41 2015 +0530
+++ b/jdk/make/copy/Copy-java.base.gmk	Thu Mar 26 19:25:48 2015 -0400
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2015, 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
@@ -98,6 +98,8 @@
   JVMCFG_SRC := $(JDK_TOPDIR)/src/java.base/macosx/conf/$(JVMCFG_ARCH)/jvm.cfg
 else
   JVMCFG_SRC := $(JDK_TOPDIR)/src/java.base/$(OPENJDK_TARGET_OS_TYPE)/conf/$(JVMCFG_ARCH)/jvm.cfg
+  # Allow override by ALT_JVMCFG_SRC if it exists
+  JVMCFG_SRC := $(if $(wildcard $(ALT_JVMCFG_SRC)),$(ALT_JVMCFG_SRC),$(JVMCFG_SRC)) 
 endif
 JVMCFG_DIR := $(LIB_DST_DIR)$(OPENJDK_TARGET_CPU_LIBDIR)
 JVMCFG := $(JVMCFG_DIR)/jvm.cfg

--- a/jdk/src/java.base/unix/conf/arm/jvm.cfg	Thu Mar 26 11:59:41 2015 +0530
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,35 +0,0 @@
-# Copyright (c) 2011, 2013, 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.
-#
-# List of JVMs that can be used as an option to java, javac, etc.
-# Order is important -- first in this list is the default JVM.
-# NOTE that this both this file and its format are UNSUPPORTED and
-# WILL GO AWAY in a future release.
-#
-# You may also select a JVM in an arbitrary location with the
-# "-XXaltjvm=<jvm_dir>" option, but that too is unsupported
-# and may not be available in a future release.
-#
--client IF_SERVER_CLASS -server
--server KNOWN
--minimal KNOWN

--- a/jdk/src/java.base/unix/conf/ppc/jvm.cfg	Thu Mar 26 11:59:41 2015 +0530
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,35 +0,0 @@
-# Copyright (c) 2011, 2013, 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.
-#
-# List of JVMs that can be used as an option to java, javac, etc.
-# Order is important -- first in this list is the default JVM.
-# NOTE that this both this file and its format are UNSUPPORTED and
-# WILL GO AWAY in a future release.
-#
-# You may also select a JVM in an arbitrary location with the
-# "-XXaltjvm=<jvm_dir>" option, but that too is unsupported
-# and may not be available in a future release.
-#
--client KNOWN
--server KNOWN
--minimal KNOWN