diff -ruN php-5.1.4.orig/ext/gd/gdcache.c php-5.1.4/ext/gd/gdcache.c
--- php-5.1.4.orig/ext/gd/gdcache.c	2005-01-09 14:05:05.000000000 -0700
+++ php-5.1.4/ext/gd/gdcache.c	2006-06-15 12:27:43.000000000 -0600
@@ -52,8 +52,21 @@
 /* implementation                                        */
 /*********************************************************/
 
-
 /* create a new cache */
+#ifdef __APPLE__
+extern gdCache_head_t *
+gdCacheCreate(
+        int                                     size,
+        gdCacheTestFn_t         gdCacheTest,
+        gdCacheFetchFn_t        gdCacheFetch,
+        gdCacheReleaseFn_t      gdCacheRelease );
+
+extern void
+gdCacheDelete( gdCache_head_t *head );
+
+extern void *
+gdCacheGet( gdCache_head_t *head, void *keydata );
+#else
 gdCache_head_t *
 gdCacheCreate(
 	int					size,
@@ -130,7 +143,7 @@
 	elem->userdata = userdata;
 	return userdata;
 }
-
+#endif
 
 
 /*********************************************************/