diff --git a/intl/lwbrk/macbuild/lwbrk.mcp b/intl/lwbrk/macbuild/lwbrk.mcp
new file mode 100644
index 000000000000..89e9089122d6
Binary files /dev/null and b/intl/lwbrk/macbuild/lwbrk.mcp differ
diff --git a/intl/lwbrk/macbuild/lwbrkSharedDebugPrefix.h b/intl/lwbrk/macbuild/lwbrkSharedDebugPrefix.h
new file mode 100644
index 000000000000..5bbb9b6037bc
--- /dev/null
+++ b/intl/lwbrk/macbuild/lwbrkSharedDebugPrefix.h
@@ -0,0 +1,20 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+#define _IMPL_NS_LWBRK· 1
+#include "MacPrefix_debug.h"
\ No newline at end of file
diff --git a/intl/lwbrk/macbuild/lwbrkSharedPrefix.h b/intl/lwbrk/macbuild/lwbrkSharedPrefix.h
new file mode 100644
index 000000000000..8880b2b238dd
--- /dev/null
+++ b/intl/lwbrk/macbuild/lwbrkSharedPrefix.h
@@ -0,0 +1,20 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+#define _IMPL_NS_LWBRK 1
+#include "MacSharedPrefix.h"
\ No newline at end of file