1 files changed, 22 insertions, 0 deletions
diff --git a/src/flags.h b/src/flags.h
index 21607fc2..33935556 100644
--- a/src/flags.h
+++ b/src/flags.h
@@ -99,6 +99,17 @@ public:
   void drop_flags(const flags_t arg) {
     _flags = static_cast<T>(static_cast<U>(_flags) & static_cast<U>(~arg));
   }
+
+#if defined(HAVE_BOOST_SERIALIZATION)
+private:
+  friend class boost::serialization::access;
+
+  template<class Archive>
+  void serialize(Archive & ar, const unsigned int /* version */)
+  {
+    ar & _flags;
+  }
+#endif // HAVE_BOOST_SERIALIZATION
 };
 
 /**
@@ -201,6 +212,17 @@ public:
   void drop_flags(const flags_t arg) {
     _flags.drop_flags(arg);
   }
+
+#if defined(HAVE_BOOST_SERIALIZATION)
+private:
+  friend class boost::serialization::access;
+
+  template<class Archive>
+  void serialize(Archive & ar, const unsigned int /* version */)
+  {
+    ar & _flags;
+  }
+#endif // HAVE_BOOST_SERIALIZATION
 };
 
 #endif // _FLAGS_H