--- misc/libcmis-0.1.0/src/libcmis/session-factory.cxx	2012-01-10 15:28:52.458706430 +0000
+++ misc/build/libcmis-0.1.0/src/libcmis/session-factory.cxx	2012-01-10 15:29:57.856419249 +0000
@@ -60,4 +60,8 @@
 
         return repos;
     }
+
+    Session::~Session()
+    {
+    }
 }
--- misc/libcmis-0.1.0/src/libcmis/session.hxx	2012-01-10 15:28:52.458706430 +0000
+++ misc/build/libcmis-0.1.0/src/libcmis/session.hxx	2012-01-10 15:29:19.071996444 +0000
@@ -44,6 +44,8 @@
             /** Get a CMIS object from its ID.
               */
             virtual CmisObjectPtr getObject( std::string id ) = 0;
+
+            virtual ~Session();
     };
 }