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

2026-02-24 18:38:47 +00:00
parent da8c28aaeb
commit 65cb2619a7
13106 changed files with 2484322 additions and 1804 deletions
@@ -0,0 +1,35 @@
+/*!
+@file
+Defines `boost::hana::Comonad`.
+
+@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_CONCEPT_COMONAD_HPP
+#define BOOST_HANA_CONCEPT_COMONAD_HPP
+
+#include <boost/hana/fwd/concept/comonad.hpp>
+
+#include <boost/hana/config.hpp>
+#include <boost/hana/core/default.hpp>
+#include <boost/hana/core/tag_of.hpp>
+#include <boost/hana/detail/integral_constant.hpp>
+#include <boost/hana/duplicate.hpp>
+#include <boost/hana/extend.hpp>
+#include <boost/hana/extract.hpp>
+
+
+BOOST_HANA_NAMESPACE_BEGIN
+    template <typename W>
+    struct Comonad
+        : hana::integral_constant<bool,
+            !is_default<extract_impl<typename tag_of<W>::type>>::value &&
+                (!is_default<duplicate_impl<typename tag_of<W>::type>>::value ||
+                 !is_default<extend_impl<typename tag_of<W>::type>>::value)
+        >
+    { };
+BOOST_HANA_NAMESPACE_END
+
+#endif // !BOOST_HANA_CONCEPT_COMONAD_HPP