Fix compilation.

src/ros_tf_listener.hh

@@ -13,6 +13,8 @@
 
 #include <sot/core/matrix-geometry.hh>
 
+#include <dynamic_graph_bridge/ros_init.hh>
+
 namespace dynamicgraph {
 class RosTfListener;
 

src/ros_time.hh

@@ -28,6 +28,8 @@ class RosTime : public dynamicgraph::Entity {
   static const std::string docstring_;
 };  // class RosTime
 
+template <> struct signal_io<boost::posix_time::ptime> : signal_io_unimplemented<boost::posix_time::ptime> {};
+
 }  // namespace dynamicgraph
 
 #endif  // DYNAMIC_GRAPH_ROS_TIME_HH