--- CMakeLists.txt.orig	2012-07-31 02:36:47.000000000 +0900
+++ CMakeLists.txt	2012-10-14 20:23:18.000000000 +0900
@@ -17,4 +17,3 @@
 set(CURRENT_LANG zh_TW)
 
 macro_optional_add_subdirectory( messages )
-macro_optional_add_subdirectory( docs )