This library links to boost_system, even though that library is header-only.
--- libs/locale/build/Jamfile.v2
+++ libs/locale/build/Jamfile.v2
@@ -410,7 +410,7 @@
         result += <source>util/gregorian.cpp ;
     }
     
-    result += <library>../../system/build//boost_system ;
+
 
 
     if "$(flags-only)" = "flags"