整理

include/boost/pfr/detail/config.hpp

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+// Copyright (c) 2016-2025 Antony Polukhin
+// Copyright (c) 2022 Denis Mikhailov
+//
+// 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)
+
+#ifndef BOOST_PFR_DETAIL_CONFIG_HPP
+#define BOOST_PFR_DETAIL_CONFIG_HPP
+#pragma once
+
+#include <boost/pfr/config.hpp>
+
+#if !BOOST_PFR_ENABLED
+
+#error Boost.PFR library is not supported in your environment.             \
+       Try one of the possible solutions:                                  \
+       1. try to take away an '-DBOOST_PFR_ENABLED=0', if it exists        \
+       2. enable C++14;                                                    \
+       3. enable C++17;                                                    \
+       4. update your compiler;                                            \
+       or disable this error by '-DBOOST_PFR_ENABLED=1' if you really know what are you doing.
+
+#endif // !BOOST_PFR_ENABLED
+
+#endif // BOOST_PFR_DETAIL_CONFIG_HPP
+