--- hatari/src/includes/file.h	2019/04/09 08:49:33	1.1.1.14
+++ hatari/src/includes/file.h	2019/04/09 08:54:29	1.1.1.16
@@ -1,16 +1,23 @@
 /*
   Hatari - file.h
 
-  This file is distributed under the GNU Public License, version 2 or at
-  your option any later version. Read the file gpl.txt for details.
+  This file is distributed under the GNU General Public License, version 2
+  or at your option any later version. Read the file gpl.txt for details.
 */
 
 #ifndef HATARI_FILE_H
 #define HATARI_FILE_H
 
+#include "config.h"
+
+#ifndef HAVE_FSEEKO
+#define fseeko fseek
+#endif
+
 extern void File_CleanFileName(char *pszFileName);
 extern void File_AddSlashToEndFileName(char *pszFileName);
 extern bool File_DoesFileExtensionMatch(const char *pszFileName, const char *pszExtension);
+extern bool File_ChangeFileExtension(const char *Filename_old, const char *Extension_old , char *Filename_new , const char *Extension_new);
 extern const char *File_RemoveFileNameDrive(const char *pszFileName);
 extern bool File_DoesFileNameEndWithSlash(char *pszFileName);
 extern Uint8 *File_Read(const char *pszFileName, long *pFileSize, const char * const ppszExts[]);