--- CMakeLists.txt.orig	2015-02-22 08:08:05 UTC
+++ CMakeLists.txt
@@ -136,6 +136,6 @@ install(FILES audex-rip-audiocd.desktop 
 
 add_subdirectory(icons)
 add_subdirectory(images)
-add_subdirectory(po)
+macro_optional_add_subdirectory(po)
 
 macro_display_feature_log()
