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

depends/x86_64-pc-linux-gnu/include/boost/test/data/index_sequence.hpp

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+//  (C) Copyright Gennadiy Rozental 2001.
+//  Distributed under 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)
+
+//  See http://www.boost.org/libs/test for the library home page.
+//
+/// @file
+/// Defines c++14 index_sequence implementation
+// ***************************************************************************
+
+#ifndef BOOST_TEST_DATA_INDEX_SEQUENCE_HPP
+#define BOOST_TEST_DATA_INDEX_SEQUENCE_HPP
+
+// Boost.Test
+#include <boost/test/data/config.hpp>
+
+#include <boost/test/detail/suppress_warnings.hpp>
+
+//____________________________________________________________________________//
+
+namespace boost {
+namespace unit_test {
+namespace data {
+
+// ************************************************************************** //
+// **************             data::index_sequence             ************** //
+// ************************************************************************** //
+
+template <std::size_t... Ns>
+struct index_sequence {};
+
+template<typename IS1, typename IS2>
+struct merge_index_sequence;
+
+template <std::size_t... Ns1, std::size_t... Ns2>
+struct merge_index_sequence<index_sequence<Ns1...>, index_sequence<Ns2...>> {
+    typedef index_sequence<Ns1..., Ns2...> type;
+};
+
+template <std::size_t B, std::size_t E, typename Enabler = void>
+struct make_index_sequence {
+    typedef typename merge_index_sequence<typename make_index_sequence<B,(B+E)/2>::type,
+                                          typename make_index_sequence<(B+E)/2,E>::type>::type type;
+};
+
+template <std::size_t B, std::size_t E>
+struct make_index_sequence<B,E,typename std::enable_if<E==B+1,void>::type> {
+    typedef index_sequence<B> type;
+};
+
+template <typename... T>
+using index_sequence_for = typename make_index_sequence<0, sizeof...(T)>::type;
+
+} // namespace data
+} // namespace unit_test
+} // namespace boost
+
+#include <boost/test/detail/enable_warnings.hpp>
+
+#endif // BOOST_TEST_DATA_INDEX_SEQUENCE_HPP
+