@@ -1,25 +1,25 @@
 #ifndef _CALLBACK_H
 #define _CALLBACK_H
 
 /*
- * Copyright 1997-1999, 2005 Bruno Haible, <bruno@clisp.org>
+ * Copyright 1997-1999 Bruno Haible, <bruno@clisp.org>
  *
  * This is free software distributed under the GNU General Public Licence
  * described in the file COPYING. Contact the author if you don't have this
  * or can't live with it. There is ABSOLUTELY NO WARRANTY, explicit or implied,
  * on this software.
  */
 
-#if !defined(LIBFFCALL_VERSION)
-# define LIBFFCALL_VERSION @LIBFFCALL_VERSION@
-#endif
-
 #include "vacall_r.h"
 #include "trampoline_r.h"
 
+#if defined(__STDC__) || defined(__GNUC__) || defined(__cplusplus)
 typedef void (*__VA_function) (void*, va_alist);
+#else
+typedef void (*__VA_function) ();
+#endif
 
 #if 0
 extern __TR_function alloc_callback (__VA_function, void*);
 extern void free_callback (__TR_function);
 extern int is_callback (void*);