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

depends/x86_64-pc-linux-gnu/include/boost/hana/negate.hpp

@@ -0,0 +1,61 @@
+/*!
+@file
+Defines `boost::hana::negate`.
+
+@copyright Louis Dionne 2013-2017
+Distributed under the Boost Software License, Version 1.0.
+(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+ */
+
+#ifndef BOOST_HANA_NEGATE_HPP
+#define BOOST_HANA_NEGATE_HPP
+
+#include <boost/hana/fwd/negate.hpp>
+
+#include <boost/hana/concept/group.hpp>
+#include <boost/hana/config.hpp>
+#include <boost/hana/core/dispatch.hpp>
+#include <boost/hana/fwd/minus.hpp>
+#include <boost/hana/zero.hpp>
+
+#include <type_traits>
+
+
+BOOST_HANA_NAMESPACE_BEGIN
+    //! @cond
+    template <typename X>
+    constexpr decltype(auto) negate_t::operator()(X&& x) const {
+        using G = typename hana::tag_of<X>::type;
+        using Negate = BOOST_HANA_DISPATCH_IF(negate_impl<G>,
+            hana::Group<G>::value
+        );
+
+    #ifndef BOOST_HANA_CONFIG_DISABLE_CONCEPT_CHECKS
+        static_assert(hana::Group<G>::value,
+        "hana::negate(x) requires 'x' to be in a Group");
+    #endif
+
+        return Negate::apply(static_cast<X&&>(x));
+    }
+    //! @endcond
+
+    template <typename T, bool condition>
+    struct negate_impl<T, when<condition>> : default_ {
+        template <typename X>
+        static constexpr decltype(auto) apply(X&& x)
+        { return hana::minus(hana::zero<T>(), static_cast<X&&>(x)); }
+    };
+
+    //////////////////////////////////////////////////////////////////////////
+    // Model for arithmetic data types
+    //////////////////////////////////////////////////////////////////////////
+    template <typename T>
+    struct negate_impl<T, when<std::is_arithmetic<T>::value &&
+                               !std::is_same<bool, T>::value>> {
+        template <typename X>
+        static constexpr decltype(auto) apply(X&& x)
+        { return -static_cast<X&&>(x); }
+    };
+BOOST_HANA_NAMESPACE_END
+
+#endif // !BOOST_HANA_NEGATE_HPP