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diff --git a/thirdparty/linux/include/coin1/IpHessianUpdater.hpp b/thirdparty/linux/include/coin1/IpHessianUpdater.hpp
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+// Copyright (C) 2005, 2006 International Business Machines and others.
+// All Rights Reserved.
+// This code is published under the Eclipse Public License.
+//
+// $Id: IpHessianUpdater.hpp 1861 2010-12-21 21:34:47Z andreasw $
+//
+// Authors:  Andreas Waechter            IBM    2005-12-26
+
+#ifndef __IPHESSIANUPDATER_HPP__
+#define __IPHESSIANUPDATER_HPP__
+
+#include "IpAlgStrategy.hpp"
+
+namespace Ipopt
+{
+
+  /** Abstract base class for objects responsible for updating the
+   *  Hessian information.  This can be done using exact second
+   *  derivatives from the NLP, or by a quasi-Newton Option.  The
+   *  result is put into the W field in IpData.
+   */
+  class HessianUpdater : public AlgorithmStrategyObject
+  {
+  public:
+    /**@name Constructors/Destructors */
+    //@{
+    /** Default Constructor */
+    HessianUpdater()
+    {}
+
+    /** Default destructor */
+    virtual ~HessianUpdater()
+    {}
+    //@}
+
+    /** overloaded from AlgorithmStrategyObject */
+    virtual bool InitializeImpl(const OptionsList& options,
+                                const std::string& prefix) = 0;
+
+    /** Update the Hessian based on the current information in IpData,
+     *  and possibly on information from previous calls.
+     */
+    virtual void UpdateHessian() = 0;
+
+  private:
+    /**@name Default Compiler Generated Methods
+     * (Hidden to avoid implicit creation/calling).
+     * These methods are not implemented and 
+     * we do not want the compiler to implement
+     * them for us, so we declare them private
+     * and do not define them. This ensures that
+     * they will not be implicitly created/called. */
+    //@{
+    /** Copy Constructor */
+    HessianUpdater(const HessianUpdater&);
+
+    /** Overloaded Equals Operator */
+    void operator=(const HessianUpdater&);
+    //@}
+
+  };
+
+} // namespace Ipopt
+
+#endif