From 1958e965613d176d9ea0aa74b699ac23acc68b39 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Sun, 5 Mar 2023 02:38:16 +0200
Subject: [PATCH] Add C++03 deprecation notice

---
 .../container_hash/detail/requires_cxx11.hpp  | 22 +++++++++++++++++++
 include/boost/container_hash/hash.hpp         |  1 +
 .../container_hash/is_contiguous_range.hpp    |  1 +
 include/boost/container_hash/is_range.hpp     |  1 +
 4 files changed, 25 insertions(+)
 create mode 100644 include/boost/container_hash/detail/requires_cxx11.hpp

diff --git a/include/boost/container_hash/detail/requires_cxx11.hpp b/include/boost/container_hash/detail/requires_cxx11.hpp
new file mode 100644
index 0000000..61db135
--- /dev/null
+++ b/include/boost/container_hash/detail/requires_cxx11.hpp
@@ -0,0 +1,22 @@
+#ifndef BOOST_HASH_DETAIL_REQUIRES_CXX11_HPP_INCLUDED
+#define BOOST_HASH_DETAIL_REQUIRES_CXX11_HPP_INCLUDED
+
+// Copyright 2023 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/config.hpp>
+#include <boost/config/pragma_message.hpp>
+
+#if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || \
+    defined(BOOST_NO_CXX11_RVALUE_REFERENCES) || \
+    defined(BOOST_NO_CXX11_DECLTYPE) || \
+    defined(BOOST_NO_CXX11_CONSTEXPR) || \
+    defined(BOOST_NO_CXX11_NOEXCEPT) || \
+    defined(BOOST_NO_CXX11_HDR_TUPLE)
+
+BOOST_PRAGMA_MESSAGE("C++03 support is deprecated in Boost.ContainerHash 1.82 and will be removed in Boost.ContainerHash 1.84.")
+
+#endif
+
+#endif // #ifndef BOOST_HASH_DETAIL_REQUIRES_CXX11_HPP_INCLUDED
diff --git a/include/boost/container_hash/hash.hpp b/include/boost/container_hash/hash.hpp
index d89938e..605644b 100644
--- a/include/boost/container_hash/hash.hpp
+++ b/include/boost/container_hash/hash.hpp
@@ -11,6 +11,7 @@
 #define BOOST_FUNCTIONAL_HASH_HASH_HPP
 
 #include <boost/container_hash/hash_fwd.hpp>
+#include <boost/container_hash/detail/requires_cxx11.hpp>
 #include <boost/container_hash/is_range.hpp>
 #include <boost/container_hash/is_contiguous_range.hpp>
 #include <boost/container_hash/is_unordered_range.hpp>
diff --git a/include/boost/container_hash/is_contiguous_range.hpp b/include/boost/container_hash/is_contiguous_range.hpp
index 0e31c11..96043cc 100644
--- a/include/boost/container_hash/is_contiguous_range.hpp
+++ b/include/boost/container_hash/is_contiguous_range.hpp
@@ -5,6 +5,7 @@
 #ifndef BOOST_HASH_IS_CONTIGUOUS_RANGE_HPP_INCLUDED
 #define BOOST_HASH_IS_CONTIGUOUS_RANGE_HPP_INCLUDED
 
+#include <boost/container_hash/detail/requires_cxx11.hpp>
 #include <boost/container_hash/is_range.hpp>
 #include <boost/type_traits/integral_constant.hpp>
 #include <boost/config.hpp>
diff --git a/include/boost/container_hash/is_range.hpp b/include/boost/container_hash/is_range.hpp
index 56fbd2e..2d3746c 100644
--- a/include/boost/container_hash/is_range.hpp
+++ b/include/boost/container_hash/is_range.hpp
@@ -5,6 +5,7 @@
 #ifndef BOOST_HASH_IS_RANGE_HPP_INCLUDED
 #define BOOST_HASH_IS_RANGE_HPP_INCLUDED
 
+#include <boost/container_hash/detail/requires_cxx11.hpp>
 #include <boost/type_traits/integral_constant.hpp>
 #include <boost/type_traits/is_integral.hpp>
 #include <boost/type_traits/declval.hpp>