$NetBSD: patch-ah,v 1.5 2013/04/21 15:39:59 joerg Exp $

- use standard headers
- don't declare own errno
- don't rely on "unix" being defined, as it isn't

--- src/fileio.c.orig	1995-06-23 10:25:18.000000000 +0000
+++ src/fileio.c
@@ -116,10 +116,7 @@ the Free Software Foundation, 675 Mass A
 #endif
 
 #include <errno.h>
-
-#ifndef vax11c
-extern int errno;
-#endif
+#include <stdlib.h>
 
 extern char *strerror ();
 
@@ -1788,10 +1785,7 @@ expand_and_dir_to_file (filename, defdir
   return abspath;
 }
 
-barf_or_query_if_file_exists (absname, querystring, interactive)
-     Lisp_Object absname;
-     unsigned char *querystring;
-     int interactive;
+static void barf_or_query_if_file_exists (Lisp_Object absname, unsigned char *querystring, int interactive)
 {
   register Lisp_Object tem;
   struct stat statbuf;
@@ -2604,8 +2598,6 @@ The value is an integer.")
   return value;
 }
 
-#ifdef unix
-
 DEFUN ("unix-sync", Funix_sync, Sunix_sync, 0, 0, "",
   "Tell Unix to finish all pending disk updates.")
   ()
@@ -2614,8 +2606,6 @@ DEFUN ("unix-sync", Funix_sync, Sunix_sy
   return Qnil;
 }
 
-#endif /* unix */
-
 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, Sfile_newer_than_file_p, 2, 2, 0,
   "Return t if file FILE1 is newer than file FILE2.\n\
 If FILE1 does not exist, the answer is nil;\n\
@@ -4507,7 +4497,5 @@ This applies only to the operation `inhi
   defsubr (&Sread_file_name_internal);
   defsubr (&Sread_file_name);
 
-#ifdef unix
   defsubr (&Sunix_sync);
-#endif
 }