diff -r bd86485d966a -r 07a87075fa2d config/libc.in
--- a/config/libc.in	Sun Dec 12 22:18:52 2010 +0100
+++ b/config/libc.in	Thu Oct 11 14:39:45 2012 +1000
@@ -23,26 +23,21 @@
 
 config LIBC_SUPPORT_THREADS_ANY
     bool
-    default n
 
 config LIBC_SUPPORT_NPTL
     bool
-    default n
     select LIBC_SUPPORT_THREADS_ANY
 
 config LIBC_SUPPORT_LINUXTHREADS
     bool
-    default n
     select LIBC_SUPPORT_THREADS_ANY
 
 config LIBC_SUPPORT_WIN32THREADS
     bool
-    default n
     select LIBC_SUPPORT_THREADS_ANY
 
 config LIBC_SUPPORT_THREADS_NONE
     bool
-    default n
 
 config THREADS
     string