stabilize build system: depends, installer, boost/bdb fixes, cross targets groundwork

depends/x86_64-pc-linux-gnu/include/boost/geometry/arithmetic/normalize.hpp

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+// Boost.Geometry (aka GGL, Generic Geometry Library)
+
+// Copyright (c) 2016, Oracle and/or its affiliates.
+// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
+
+// Use, modification and distribution is subject to the Boost Software License,
+// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_GEOMETRY_ARITHMETIC_NORMALIZE_HPP
+#define BOOST_GEOMETRY_ARITHMETIC_NORMALIZE_HPP
+
+
+#include <boost/geometry/core/coordinate_type.hpp>
+
+#include <boost/geometry/arithmetic/arithmetic.hpp>
+#include <boost/geometry/arithmetic/dot_product.hpp>
+#include <boost/geometry/util/math.hpp>
+
+
+namespace boost { namespace geometry
+{
+
+#ifndef DOXYGEN_NO_DETAIL
+namespace detail
+{
+
+template <typename Point>
+inline typename coordinate_type<Point>::type vec_length_sqr(Point const& pt)
+{
+    return dot_product(pt, pt);
+}
+
+template <typename Point>
+inline typename coordinate_type<Point>::type vec_length(Point const& pt)
+{
+    // NOTE: hypot() could be used instead of sqrt()
+    return math::sqrt(dot_product(pt, pt));
+}
+
+template <typename Point>
+inline bool vec_normalize(Point & pt, typename coordinate_type<Point>::type & len)
+{
+    typedef typename coordinate_type<Point>::type coord_t;
+
+    coord_t const c0 = 0;
+    len = vec_length(pt);
+    
+    if (math::equals(len, c0))
+    {
+        return false;
+    }
+
+    divide_value(pt, len);
+    return true;
+}
+
+template <typename Point>
+inline bool vec_normalize(Point & pt)
+{
+    typedef typename coordinate_type<Point>::type coord_t;
+    coord_t len;
+    return vec_normalize(pt, len);
+}
+
+} // namespace detail
+#endif // DOXYGEN_NO_DETAIL
+
+}} // namespace boost::geometry
+
+#endif // BOOST_GEOMETRY_ARITHMETIC_NORMALIZE_HPP