--- Libc/Libc-320/include/libc.h
+++ Libc/Libc-262.2.12/include/libc.h
@@ -26,8 +26,8 @@
  * Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved
  */
 
-#ifndef _LIBC_H
-#define _LIBC_H
+#ifndef LIBC_H
+#define LIBC_H
 
 #include <stdio.h>
 #include <standards.h>
@@ -68,11 +68,8 @@
         char *q_data;
 };
 
-#include <sys/cdefs.h>
-
-__BEGIN_DECLS
 extern kern_return_t map_fd(int fd, vm_offset_t offset,
         vm_offset_t *addr, boolean_t find_space, vm_size_t numbytes);
-__END_DECLS
+
 
 #endif  /* _LIBC_H */