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

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

@@ -0,0 +1,56 @@
+/*!
+@file
+Defines `boost::hana::replace`.
+
+@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_REPLACE_HPP
+#define BOOST_HANA_REPLACE_HPP
+
+#include <boost/hana/fwd/replace.hpp>
+
+#include <boost/hana/concept/functor.hpp>
+#include <boost/hana/config.hpp>
+#include <boost/hana/core/dispatch.hpp>
+#include <boost/hana/equal.hpp>
+#include <boost/hana/replace_if.hpp>
+
+
+BOOST_HANA_NAMESPACE_BEGIN
+    //! @cond
+    template <typename Xs, typename OldVal, typename NewVal>
+    constexpr auto replace_t::operator()(Xs&& xs, OldVal&& oldval, NewVal&& newval) const {
+        using S = typename hana::tag_of<Xs>::type;
+        using Replace = BOOST_HANA_DISPATCH_IF(replace_impl<S>,
+            hana::Functor<S>::value
+        );
+
+    #ifndef BOOST_HANA_CONFIG_DISABLE_CONCEPT_CHECKS
+        static_assert(hana::Functor<S>::value,
+        "hana::replace(xs, oldval, newval) requires 'xs' to be a Functor");
+    #endif
+
+        return Replace::apply(static_cast<Xs&&>(xs),
+                              static_cast<OldVal&&>(oldval),
+                              static_cast<NewVal&&>(newval));
+    }
+    //! @endcond
+
+    template <typename Fun, bool condition>
+    struct replace_impl<Fun, when<condition>> : default_ {
+        template <typename Xs, typename OldVal, typename NewVal>
+        static constexpr decltype(auto)
+        apply(Xs&& xs, OldVal&& oldval, NewVal&& newval) {
+            return hana::replace_if(
+                static_cast<Xs&&>(xs),
+                hana::equal.to(static_cast<OldVal&&>(oldval)),
+                static_cast<NewVal&&>(newval)
+            );
+        }
+    };
+BOOST_HANA_NAMESPACE_END
+
+#endif // !BOOST_HANA_REPLACE_HPP