diff -r d205527c5e01 -r ae730f907bed config/global/build-behave.in
--- a/config/global/build-behave.in	Thu Apr 17 20:26:25 2008 +0000
+++ b/config/global/build-behave.in	Mon Aug 25 19:44:39 2008 +0000
@@ -43,3 +43,17 @@
     help
       Use gcc's option -pipe to use pipes rather than temp files when building
       the toolchain.
+
+config CONFIG_SHELL_ASH
+    bool
+    prompt "Use 'ash' as CONFIG_SHELL"
+    default n
+    help
+      Use /bin/ash as the shell used by ./configure scripts.
+      
+      ./configure scripts make intensive use of calling a sub-shell, and the
+      traditional bash is slow, whereas ash is faster.
+      
+      Saying 'y' here should be safe enough, but some components may not
+      accept using a shell other than bash (this is most probably true for
+      old versions). If you have trouble, say 'n' here and see if it fixes it.