--- Libc/Libc-1725.40.4/include/strings.h
+++ Libc/Libc-391.2.3/include/strings.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2007, 2010, 2023 Apple Inc. All rights reserved.
+ * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
@@ -55,14 +55,27 @@
  *	@(#)strings.h	8.1 (Berkeley) 6/2/93
  */
 
-#ifndef _STRINGS_H_
-#define _STRINGS_H_
+#if !defined(_XOPEN_SOURCE) && !defined(_POSIX_C_SOURCE)
 
-#include <_strings.h>
+#include <string.h>
 
-#if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
-#include <string.h>
+#else
+
+#include <_types.h>
+
+#ifndef	_SIZE_T
+#define	_SIZE_T
+typedef	__darwin_size_t	size_t;
 #endif
 
-#endif  /* _STRINGS_H_ */
+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 */
+