--- a/make/java/java/FILES_java.gmk	Wed Apr 04 12:45:03 2012 -0400
+++ b/make/java/java/FILES_java.gmk	Wed Apr 04 23:15:58 2012 +0100
@@ -51,6 +51,7 @@
     java/lang/SuppressWarnings.java \
     java/lang/AbstractStringBuilder.java \
     java/lang/ClassLoader.java \
+    java/lang/ClassLoaderHelper.java \
     java/lang/AssertionStatusDirectives.java \
     java/lang/Enum.java \
     java/lang/StrictMath.java \

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/macosx/classes/java/lang/ClassLoaderHelper.java	Wed Apr 04 23:15:58 2012 +0100
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2012, 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.
+ */
+package java.lang;
+
+import java.io.File;
+
+class ClassLoaderHelper {
+
+    private ClassLoaderHelper() {}
+
+    /**
+     * Returns an alternate path name for the given file
+     * such that if the original pathname did not exist, then the
+     * file may be located at the alternate location.
+     * For mac, this replaces the final .dylib suffix with .jnilib
+     */
+    static File mapAlternativeName(File lib) {
+        String name = lib.toString();
+        int index = name.toLowerCase().lastIndexOf(".dylib");
+        if (index < 0) {
+            return null;
+        }
+        return new File(name.substring(0, index) + ".jnilib");
+    }
+}

--- a/src/share/classes/java/lang/ClassLoader.java	Wed Apr 04 12:45:03 2012 -0400
+++ b/src/share/classes/java/lang/ClassLoader.java	Wed Apr 04 23:15:58 2012 +0100
@@ -1861,6 +1861,17 @@
     }
 
     private static boolean loadLibrary0(Class fromClass, final File file) {
+        if (loadLibrary1(fromClass, file)) {
+            return true;
+        }
+        final File libfile = ClassLoaderHelper.mapAlternativeName(file);
+        if (libfile != null && loadLibrary1(fromClass, libfile)) {
+            return true;
+        }
+        return false;
+    }
+
+    private static boolean loadLibrary1(Class fromClass, final File file) {
         boolean exists = AccessController.doPrivileged(
             new PrivilegedAction<Object>() {
                 public Object run() {

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/solaris/classes/java/lang/ClassLoaderHelper.java	Wed Apr 04 23:15:58 2012 +0100
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2012, 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.
+ */
+package java.lang;
+
+import java.io.File;
+
+class ClassLoaderHelper {
+
+    private ClassLoaderHelper() {}
+
+    /**
+     * Returns an alternate path name for the given file
+     * such that if the original pathname did not exist, then the
+     * file may be located at the alternate location.
+     * For most platforms, this behavior is not supported and returns null.
+     */
+    static File mapAlternativeName(File lib) {
+        return null;
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/windows/classes/java/lang/ClassLoaderHelper.java	Wed Apr 04 23:15:58 2012 +0100
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2012, 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.
+ */
+package java.lang;
+
+import java.io.File;
+
+class ClassLoaderHelper {
+
+    private ClassLoaderHelper() {}
+
+    /**
+     * Returns an alternate path name for the given file
+     * such that if the original pathname did not exist, then the
+     * file may be located at the alternate location.
+     * For most platforms, this behavior is not supported and returns null.
+     */
+    static File mapAlternativeName(File lib) {
+        return null;
+    }
+}