Index: aix-thread.c
===================================================================
RCS file: /cvs/src/src/gdb/aix-thread.c,v
retrieving revision 1.72
diff -u -r1.72 aix-thread.c
--- aix-thread.c	1 Jan 2010 07:31:29 -0000	1.72
+++ aix-thread.c	24 Feb 2010 12:46:26 -0000
@@ -647,9 +647,11 @@
   pthdb_tid_t ktid = 0;
   int result = 0;
 
+#if !defined(_AIX51) && !defined(_AIX61)
   /* getthrds(3) isn't prototyped in any AIX 4.3.3 #include file.  */
   extern int getthrds (pid_t, struct thrdsinfo64 *, 
 		       int, pthdb_tid_t *, int);
+#endif
 
   while (1)
   {