diff -r 504b0759c149 -r 91a52bc04af9 config/libc/newlib.in.2
--- a/config/libc/newlib.in.2	Fri Nov 18 11:47:30 2011 +0800
+++ b/config/libc/newlib.in.2	Sun Nov 11 21:42:47 2012 +0100
@@ -35,6 +35,15 @@
 	  _write... If you plan to port newlib to a new
 	  platform/board, say Yes.
 
+config LIBC_NEWLIB_ENABLE_TARGET_OPTSPACE
+    bool
+    prompt "Optimize newlib for size"
+    default y
+    help
+      Pass --enable-target-optspace to newlib configure.
+      
+      This will compile newlib with -Os.
+
 config LIBC_NEWLIB_EXTRA_CONFIG_ARRAY
     string
     prompt "Extra config for newlib"