--- CMakeLists.txt.orig	2013-12-08 03:56:51.000000000 +0900
+++ CMakeLists.txt	2013-12-11 12:10:05.000000000 +0900
@@ -59,7 +59,7 @@
 add_subdirectory(file_templates)
 add_subdirectory(providers)
 
-macro_optional_add_subdirectory(doc)
+#macro_optional_add_subdirectory(doc)
 
 macro_display_feature_log()