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diff --git a/thirdparty/linux/include/coin/ClpDummyMatrix.hpp b/thirdparty/linux/include/coin/ClpDummyMatrix.hpp
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+/* $Id: ClpDummyMatrix.hpp 1665 2011-01-04 17:55:54Z lou $ */
+// Copyright (C) 2003, International Business Machines
+// Corporation and others.  All Rights Reserved.
+// This code is licensed under the terms of the Eclipse Public License (EPL).
+
+#ifndef ClpDummyMatrix_H
+#define ClpDummyMatrix_H
+
+
+#include "CoinPragma.hpp"
+
+#include "ClpMatrixBase.hpp"
+
+/** This implements a dummy matrix as derived from ClpMatrixBase.
+    This is so you can do ClpPdco but may come in useful elsewhere.
+    It just has dimensions but no data
+*/
+
+
+class ClpDummyMatrix : public ClpMatrixBase {
+
+public:
+     /**@name Useful methods */
+     //@{
+     /// Return a complete CoinPackedMatrix
+     virtual CoinPackedMatrix * getPackedMatrix() const;
+     /** Whether the packed matrix is column major ordered or not. */
+     virtual bool isColOrdered() const {
+          return true;
+     }
+     /** Number of entries in the packed matrix. */
+     virtual  CoinBigIndex getNumElements() const {
+          return numberElements_;
+     }
+     /** Number of columns. */
+     virtual int getNumCols() const {
+          return numberColumns_;
+     }
+     /** Number of rows. */
+     virtual int getNumRows() const {
+          return numberRows_;
+     }
+
+     /** A vector containing the elements in the packed matrix. Note that there
+      might be gaps in this list, entries that do not belong to any
+      major-dimension vector. To get the actual elements one should look at
+      this vector together with vectorStarts and vectorLengths. */
+     virtual const double * getElements() const;
+     /** A vector containing the minor indices of the elements in the packed
+          matrix. Note that there might be gaps in this list, entries that do not
+          belong to any major-dimension vector. To get the actual elements one
+          should look at this vector together with vectorStarts and
+          vectorLengths. */
+     virtual const int * getIndices() const;
+
+     virtual const CoinBigIndex * getVectorStarts() const;
+     /** The lengths of the major-dimension vectors. */
+     virtual const int * getVectorLengths() const;
+
+     /** Delete the columns whose indices are listed in <code>indDel</code>. */
+     virtual void deleteCols(const int numDel, const int * indDel);
+     /** Delete the rows whose indices are listed in <code>indDel</code>. */
+     virtual void deleteRows(const int numDel, const int * indDel);
+     /** Returns a new matrix in reverse order without gaps */
+     virtual ClpMatrixBase * reverseOrderedCopy() const;
+     /// Returns number of elements in column part of basis
+     virtual CoinBigIndex countBasis(const int * whichColumn,
+                                     int & numberColumnBasic);
+     /// Fills in column part of basis
+     virtual void fillBasis(ClpSimplex * model,
+                            const int * whichColumn,
+                            int & numberColumnBasic,
+                            int * row, int * start,
+                            int * rowCount, int * columnCount,
+                            CoinFactorizationDouble * element);
+     /** Unpacks a column into an CoinIndexedvector
+      */
+     virtual void unpack(const ClpSimplex * model, CoinIndexedVector * rowArray,
+                         int column) const ;
+     /** Unpacks a column into an CoinIndexedvector
+      ** in packed foramt
+         Note that model is NOT const.  Bounds and objective could
+         be modified if doing column generation (just for this variable) */
+     virtual void unpackPacked(ClpSimplex * model,
+                               CoinIndexedVector * rowArray,
+                               int column) const;
+     /** Adds multiple of a column into an CoinIndexedvector
+         You can use quickAdd to add to vector */
+     virtual void add(const ClpSimplex * model, CoinIndexedVector * rowArray,
+                      int column, double multiplier) const ;
+     /** Adds multiple of a column into an array */
+     virtual void add(const ClpSimplex * model, double * array,
+                      int column, double multiplier) const;
+     /// Allow any parts of a created CoinMatrix to be deleted
+     /// Allow any parts of a created CoinPackedMatrix to be deleted
+     virtual void releasePackedMatrix() const {}
+     //@}
+
+     /**@name Matrix times vector methods */
+     //@{
+     /** Return <code>y + A * scalar *x</code> in <code>y</code>.
+         @pre <code>x</code> must be of size <code>numColumns()</code>
+         @pre <code>y</code> must be of size <code>numRows()</code> */
+     virtual void times(double scalar,
+                        const double * x, double * y) const;
+     /// And for scaling
+     virtual void times(double scalar,
+                        const double * x, double * y,
+                        const double * rowScale,
+                        const double * columnScale) const;
+     /** Return <code>y + x * scalar * A</code> in <code>y</code>.
+         @pre <code>x</code> must be of size <code>numRows()</code>
+         @pre <code>y</code> must be of size <code>numColumns()</code> */
+     virtual void transposeTimes(double scalar,
+                                 const double * x, double * y) const;
+     /// And for scaling
+     virtual void transposeTimes(double scalar,
+                                 const double * x, double * y,
+                                 const double * rowScale,
+                                 const double * columnScale) const;
+
+     using ClpMatrixBase::transposeTimes ;
+     /** Return <code>x * scalar * A + y</code> in <code>z</code>.
+     Can use y as temporary array (will be empty at end)
+     Note - If x packed mode - then z packed mode */
+     virtual void transposeTimes(const ClpSimplex * model, double scalar,
+                                 const CoinIndexedVector * x,
+                                 CoinIndexedVector * y,
+                                 CoinIndexedVector * z) const;
+     /** Return <code>x *A</code> in <code>z</code> but
+     just for indices in y.
+     Note - If x packed mode - then z packed mode
+     Squashes small elements and knows about ClpSimplex */
+     virtual void subsetTransposeTimes(const ClpSimplex * model,
+                                       const CoinIndexedVector * x,
+                                       const CoinIndexedVector * y,
+                                       CoinIndexedVector * z) const;
+     //@}
+
+     /**@name Other */
+     //@{
+     //@}
+
+
+     /**@name Constructors, destructor */
+     //@{
+     /** Default constructor. */
+     ClpDummyMatrix();
+     /// Constructor with data
+     ClpDummyMatrix(int numberColumns, int numberRows,
+                    int numberElements);
+     /** Destructor */
+     virtual ~ClpDummyMatrix();
+     //@}
+
+     /**@name Copy method */
+     //@{
+     /** The copy constructor. */
+     ClpDummyMatrix(const ClpDummyMatrix&);
+     /** The copy constructor from an CoinDummyMatrix. */
+     ClpDummyMatrix(const CoinPackedMatrix&);
+
+     ClpDummyMatrix& operator=(const ClpDummyMatrix&);
+     /// Clone
+     virtual ClpMatrixBase * clone() const ;
+     //@}
+
+
+protected:
+     /**@name Data members
+        The data members are protected to allow access for derived classes. */
+     //@{
+     /// Number of rows
+     int numberRows_;
+     /// Number of columns
+     int numberColumns_;
+     /// Number of elements
+     int numberElements_;
+
+     //@}
+};
+
+#endif