Imported Upstream version 1.64.0

[platform/upstream/boost.git] / boost / date_time / gregorian / greg_duration.hpp

diff --git a/boost/date_time/gregorian/greg_duration.hpp b/boost/date_time/gregorian/greg_duration.hpp
index dc6ad60..3b1a497 100644 (file)
--- a/boost/date_time/gregorian/greg_duration.hpp
+++ b/boost/date_time/gregorian/greg_duration.hpp
@@ -9,6 +9,7 @@
  * $Date$
  */
 
+#include <boost/date_time/compiler_config.hpp>
 #include <boost/date_time/date_duration.hpp>
 #include <boost/date_time/int_adapter.hpp>
 #include <boost/date_time/special_defs.hpp>
@@ -22,7 +23,7 @@ namespace gregorian {
   //! Durations in days for gregorian system
   /*! \ingroup date_basics
    */
-  class date_duration :
+  class BOOST_SYMBOL_VISIBLE date_duration :
     public boost::date_time::date_duration< date_duration_rep >
   {
     typedef boost::date_time::date_duration< date_duration_rep > base_type;