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diff --git a/boost/geometry/strategies/closest_points/cartesian.hpp b/boost/geometry/strategies/closest_points/cartesian.hpp
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+// Boost.Geometry
+
+// Copyright (c) 2021, Oracle and/or its affiliates.
+
+// Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
+
+// Licensed under the Boost Software License version 1.0.
+// http://www.boost.org/users/license.html
+
+#ifndef BOOST_GEOMETRY_STRATEGIES_CLOSEST_POINTS_CARTESIAN_HPP
+#define BOOST_GEOMETRY_STRATEGIES_CLOSEST_POINTS_CARTESIAN_HPP
+
+
+//#include <boost/geometry/strategies/cartesian/azimuth.hpp>
+
+//#include <boost/geometry/strategies/cartesian/distance_projected_point.hpp>
+//#include <boost/geometry/strategies/cartesian/distance_pythagoras.hpp>
+#include <boost/geometry/strategies/cartesian/distance_pythagoras_box_box.hpp>
+#include <boost/geometry/strategies/cartesian/distance_pythagoras_point_box.hpp>
+#include <boost/geometry/strategies/cartesian/distance_segment_box.hpp>
+
+#include <boost/geometry/strategies/cartesian/closest_points_pt_seg.hpp>
+
+#include <boost/geometry/strategies/detail.hpp>
+#include <boost/geometry/strategies/distance/detail.hpp>
+#include <boost/geometry/strategies/closest_points/services.hpp>
+
+//#include <boost/geometry/strategies/normalize.hpp>
+#include <boost/geometry/strategies/distance/cartesian.hpp>
+
+#include <boost/geometry/util/type_traits.hpp>
+
+
+namespace boost { namespace geometry
+{
+
+namespace strategies { namespace closest_points
+{
+
+template <typename CalculationType = void>
+struct cartesian
+    : public strategies::distance::cartesian<CalculationType>
+{
+    template <typename Geometry1, typename Geometry2>
+    static auto closest_points(Geometry1 const&, Geometry2 const&,
+                               distance::detail::enable_if_ps_t<Geometry1, Geometry2> * = nullptr)
+    {
+        return strategy::closest_points::projected_point<CalculationType>();
+    }
+};
+
+
+namespace services
+{
+
+template <typename Geometry1, typename Geometry2>
+struct default_strategy<Geometry1, Geometry2, cartesian_tag, cartesian_tag>
+{
+    using type = strategies::closest_points::cartesian<>;
+};
+
+} // namespace services
+
+}} // namespace strategies::closest_points
+
+}} // namespace boost::geometry
+
+#endif // BOOST_GEOMETRY_STRATEGIES_CLOSEST_POINTS_CARTESIAN_HPP