Index: ssh.h
==================================================================
--- ssh.h
+++ ssh.h
@@ -273,10 +273,14 @@
 extern void x11_unthrottle(Socket s);
 extern void x11_override_throttle(Socket s, int enable);
 extern int x11_get_screen_number(char *display);
 void x11_get_real_auth(void *authv, char *display);
 
+/* Platfdorm-dependent X11 function */
+extern void platform_get_x11_auth(char *display, int *proto,
+                                  unsigned char *data, int *datalen);
+
 Bignum copybn(Bignum b);
 Bignum bn_power_2(int n);
 void bn_restore_invariant(Bignum b);
 Bignum bignum_from_long(unsigned long n);
 void freebn(Bignum b);

Index: x11fwd.c
==================================================================
--- x11fwd.c
+++ x11fwd.c
@@ -60,13 +60,10 @@
     unsigned char fakedata[64], realdata[64];
     int fakeproto, realproto;
     int fakelen, reallen;
 };
 
-extern void platform_get_x11_auth(char *display, int *proto,
-                                  unsigned char *data, int *datalen);
-
 struct X11Private {
     const struct plug_function_table *fn;
     /* the above variable absolutely *must* be the first in this structure */
     unsigned char firstpkt[12];	       /* first X data packet */
     struct X11Auth *auth;