src: Adding log4cxx logging

Refs: #1505

Change-Id: Ib154d91f81acf3f1dd8bbcf552062a16d03fec74
diff --git a/src/route/routing-table.hpp b/src/route/routing-table.hpp
index 983596b..0117a6a 100644
--- a/src/route/routing-table.hpp
+++ b/src/route/routing-table.hpp
@@ -63,6 +63,9 @@
   void
   clearDryRoutingTable();
 
+  void
+  writeLog();
+
   const int m_NO_NEXT_HOP;
 
   std::list<RoutingTableEntry> m_rTable;