--- CMakeLists.txt.orig	2012-07-31 02:36:03.000000000 +0900
+++ CMakeLists.txt	2012-10-14 20:09:18.000000000 +0900
@@ -17,6 +17,5 @@
 set(CURRENT_LANG de)
 
 macro_optional_add_subdirectory( messages )
-macro_optional_add_subdirectory( docs )
 macro_optional_add_subdirectory( data )
 macro_optional_add_subdirectory( scripts )