From 2c8838c39dea33fead7cd87ed34535a4b8ab0333 Mon Sep 17 00:00:00 2001
From: Jeremie Deray <jeremie.deray@pal-robotics.com>
Date: Mon, 23 Oct 2017 14:46:43 +0200
Subject: [PATCH] add NodeBase::Serializer declaration

---
 src/node_base.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/node_base.h b/src/node_base.h
index dc23b9e41..4f77cd932 100644
--- a/src/node_base.h
+++ b/src/node_base.h
@@ -51,11 +51,14 @@ namespace wolf {
  *    Finally, all the other node names in the Wolf Tree are not required, and in fact they are not used for anything.
  *
  **/
+
 class NodeBase
 {
     private:
         static unsigned int node_id_count_; ///< Object counter (acts as simple ID factory)
 
+        struct Serializer;
+
     protected:
         ProblemWPtr problem_ptr_;
 
-- 
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