diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 94dafa70566..96374062fdc 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2010-12-18  Iain Sandoe  <iains@gcc.gnu.org>
+
+	* config/darwin.h (GCC_DRIVER_HOST_INITIALIZATION):
+	Only expose when not building for target.
+
 2010-12-17  Joseph Myers  <joseph@codesourcery.com>
 
 	* config/netbsd.opt, config/netbsd-elf.opt: New files.
diff --git a/gcc/config/darwin.h b/gcc/config/darwin.h
index ba617401ff3..a2694b873ae 100644
--- a/gcc/config/darwin.h
+++ b/gcc/config/darwin.h
@@ -963,10 +963,11 @@ __enable_execute_stack (void *addr)                                     \
 
 #define TARGET_HAS_TARGETCM 1
 
-extern void darwin_driver_init (unsigned int *decoded_options_count,
-				struct cl_decoded_option **decoded_options);
+#ifndef USED_FOR_TARGET
+extern void darwin_driver_init (unsigned int *,struct cl_decoded_option **);
 #define GCC_DRIVER_HOST_INITIALIZATION \
   darwin_driver_init (&decoded_options_count, &decoded_options)
+#endif
 
 /* The Apple assembler and linker do not support constructor priorities.  */
 #undef SUPPORTS_INIT_PRIORITY