--- Libc/Libc-262/include/strings.h
+++ Libc/Libc-391.5.21/include/strings.h
@@ -3,19 +3,20 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
@@ -54,4 +55,27 @@
  *	@(#)strings.h	8.1 (Berkeley) 6/2/93
  */
 
+#if !defined(_XOPEN_SOURCE) && !defined(_POSIX_C_SOURCE)
+
 #include <string.h>
+
+#else
+
+#include <_types.h>
+
+#ifndef	_SIZE_T
+#define	_SIZE_T
+typedef	__darwin_size_t	size_t;
+#endif
+
+int      bcmp(const void *, const void *, size_t);
+void     bcopy(const void *, void *, size_t);
+void     bzero(void *, size_t);
+int      ffs(int);
+char    *index(const char *, int);
+char    *rindex(const char *, int); 
+int      strcasecmp(const char *, const char *);
+int      strncasecmp(const char *, const char *, size_t);
+
+#endif  /* _POSIX_C_SOURCE */
+