diff -r 032ae3253a65 -r bd86485d966a config/libc.in
--- a/config/libc.in	Tue Nov 23 21:35:24 2010 +0100
+++ b/config/libc.in	Sun Dec 12 22:18:52 2010 +0100
@@ -40,6 +40,10 @@
     default n
     select LIBC_SUPPORT_THREADS_ANY
 
+config LIBC_SUPPORT_THREADS_NONE
+    bool
+    default n
+
 config THREADS
     string
     default "nptl"          if THREADS_NPTL
@@ -78,6 +82,7 @@
 config THREADS_NONE
     bool
     prompt "none"
+    depends on LIBC_SUPPORT_THREADS_NONE
 
 endchoice