From 48137e28d8abe8464ffbc422333e26b91cd8e3b0 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Tue, 28 Oct 2008 12:18:00 +0000
Subject: [PATCH] add the possibility to extend Matrix outside Eigen, just like
 MatrixBase

---
 Eigen/src/Core/Matrix.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Eigen/src/Core/Matrix.h b/Eigen/src/Core/Matrix.h
index 4e24e84e2..5b95a0a5e 100644
--- a/Eigen/src/Core/Matrix.h
+++ b/Eigen/src/Core/Matrix.h
@@ -428,6 +428,11 @@ class Matrix
     explicit Matrix(const RotationBase<OtherDerived,ColsAtCompileTime>& r);
     template<typename OtherDerived>
     Matrix& operator=(const RotationBase<OtherDerived,ColsAtCompileTime>& r);
+
+    // allow to extend Matrix outside Eigen
+    #ifdef EIGEN_MATRIX_PLUGIN
+    #include EIGEN_MATRIX_PLUGIN
+    #endif
 };
 
 /** \defgroup matrixtypedefs Global matrix typedefs