diff --git a/lib/cocoa/src/TObjective-C.h b/lib/cocoa/src/TObjective-C.h
new file mode 100644
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--- /dev/null
+++ b/lib/cocoa/src/TObjective-C.h
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+/*
+ * TObjective-C.h is for supporting coexistence of both the ARC (Automatic 
+ * Reference Counting) mode and the Non-ARC mode of Objective-C 
+ * in the same source code.
+ *
+ *                  2011/11/14  HIRANO Satoshi (AIST, Japan)
+ *
+ * Before:
+ *
+ *    var = [aObject retain];
+ *    [aObject release];
+ *    [aObject autorelease];
+ *    [super dealloc];
+ *    CFFunction(obj);
+ *
+ * ARC and Non-ARC compatible:
+ *
+ *    #import "TObjective-C.h"
+ *    var = [aObject retain_stub];
+ *    [aObject release_stub];
+ *    [aObject autorelease_stub];
+ *    [super dealloc_stub];
+ *    CFFunction(bridge_stub obj);
+ *
+ *    Don't use retain_stub for @property(retain).
+ *    Use NSAutoreleasePool like this:
+ *        #if __has_feature(objc_arc)
+ *          @autoreleasepool {
+ *              // code 
+ *          }
+ *        #else
+ *          NSAutoReleasePool *pool = [[NSAutoReleasePool alloc] init...
+ *          // code
+ *          [pool release];
+ *        #endif
+ */
+
+
+#if !defined(retain_stub)
+#if __has_feature(objc_arc)
+#define retain_stub self
+#define autorelease_stub self
+#define release_stub self
+#define dealloc_stub self
+#define bridge_stub __bridge
+#else
+#define retain_stub retain
+#define autorelease_stub autorelease
+#define release_stub release
+#define dealloc_stub dealloc
+#define bridge_stub
+#endif
+#endif