diff --git a/include/boost/smart_ptr/allocate_local_shared_array.hpp b/include/boost/smart_ptr/allocate_local_shared_array.hpp
index fd87329..72ecfcf 100644
--- a/include/boost/smart_ptr/allocate_local_shared_array.hpp
+++ b/include/boost/smart_ptr/allocate_local_shared_array.hpp
@@ -8,6 +8,7 @@ Distributed under the Boost Software License, Version 1.0.
 #ifndef BOOST_SMART_PTR_ALLOCATE_LOCAL_SHARED_ARRAY_HPP
 #define BOOST_SMART_PTR_ALLOCATE_LOCAL_SHARED_ARRAY_HPP
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/smart_ptr/allocate_shared_array.hpp>
 #include <boost/smart_ptr/local_shared_ptr.hpp>
 
diff --git a/include/boost/smart_ptr/allocate_shared_array.hpp b/include/boost/smart_ptr/allocate_shared_array.hpp
index 5f00d91..f07702b 100644
--- a/include/boost/smart_ptr/allocate_shared_array.hpp
+++ b/include/boost/smart_ptr/allocate_shared_array.hpp
@@ -8,6 +8,7 @@ Distributed under the Boost Software License, Version 1.0.
 #ifndef BOOST_SMART_PTR_ALLOCATE_SHARED_ARRAY_HPP
 #define BOOST_SMART_PTR_ALLOCATE_SHARED_ARRAY_HPP
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/core/allocator_access.hpp>
 #include <boost/core/alloc_construct.hpp>
 #include <boost/core/first_scalar.hpp>
diff --git a/include/boost/smart_ptr/allocate_unique.hpp b/include/boost/smart_ptr/allocate_unique.hpp
index 07cc2bf..412b344 100644
--- a/include/boost/smart_ptr/allocate_unique.hpp
+++ b/include/boost/smart_ptr/allocate_unique.hpp
@@ -8,6 +8,7 @@ Distributed under the Boost Software License, Version 1.0.
 #ifndef BOOST_SMART_PTR_ALLOCATE_UNIQUE_HPP
 #define BOOST_SMART_PTR_ALLOCATE_UNIQUE_HPP
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/smart_ptr/detail/sp_noexcept.hpp>
 #include <boost/smart_ptr/detail/sp_nullptr_t.hpp>
 #include <boost/core/allocator_access.hpp>
diff --git a/include/boost/smart_ptr/atomic_shared_ptr.hpp b/include/boost/smart_ptr/atomic_shared_ptr.hpp
index b863100..d855e5a 100644
--- a/include/boost/smart_ptr/atomic_shared_ptr.hpp
+++ b/include/boost/smart_ptr/atomic_shared_ptr.hpp
@@ -13,6 +13,7 @@
 //  See http://www.boost.org/libs/smart_ptr/ for documentation.
 //
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/smart_ptr/shared_ptr.hpp>
 #include <boost/smart_ptr/detail/spinlock.hpp>
 #include <cstring>
diff --git a/include/boost/smart_ptr/detail/requires_cxx11.hpp b/include/boost/smart_ptr/detail/requires_cxx11.hpp
new file mode 100644
index 0000000..fb4d61c
--- /dev/null
+++ b/include/boost/smart_ptr/detail/requires_cxx11.hpp
@@ -0,0 +1,23 @@
+#ifndef BOOST_SMART_PTR_DETAIL_REQUIRES_CXX11_HPP_INCLUDED
+#define BOOST_SMART_PTR_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_NULLPTR) || \
+    defined(BOOST_NO_CXX11_SMART_PTR)
+
+BOOST_PRAGMA_MESSAGE("C++03 support is deprecated in Boost.SmartPtr 1.82 and will be removed in Boost.SmartPtr 1.84.")
+
+#endif
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_REQUIRES_CXX11_HPP_INCLUDED
diff --git a/include/boost/smart_ptr/enable_shared_from.hpp b/include/boost/smart_ptr/enable_shared_from.hpp
index be88b30..68fb8e4 100644
--- a/include/boost/smart_ptr/enable_shared_from.hpp
+++ b/include/boost/smart_ptr/enable_shared_from.hpp
@@ -11,6 +11,7 @@
 //
 //  See http://www.boost.org/libs/smart_ptr/ for documentation.
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/smart_ptr/enable_shared_from_this.hpp>
 #include <boost/smart_ptr/detail/sp_noexcept.hpp>
 
diff --git a/include/boost/smart_ptr/enable_shared_from_this.hpp b/include/boost/smart_ptr/enable_shared_from_this.hpp
index fc4de0b..b4ea23c 100644
--- a/include/boost/smart_ptr/enable_shared_from_this.hpp
+++ b/include/boost/smart_ptr/enable_shared_from_this.hpp
@@ -13,6 +13,7 @@
 //  See http://www.boost.org/libs/smart_ptr/ for documentation.
 //
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/smart_ptr/weak_ptr.hpp>
 #include <boost/smart_ptr/shared_ptr.hpp>
 #include <boost/smart_ptr/detail/sp_noexcept.hpp>
diff --git a/include/boost/smart_ptr/intrusive_ptr.hpp b/include/boost/smart_ptr/intrusive_ptr.hpp
index 895a12f..733be39 100644
--- a/include/boost/smart_ptr/intrusive_ptr.hpp
+++ b/include/boost/smart_ptr/intrusive_ptr.hpp
@@ -13,6 +13,8 @@
 //  See http://www.boost.org/libs/smart_ptr/ for documentation.
 //
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
+
 #include <boost/config.hpp>
 
 #include <boost/assert.hpp>
diff --git a/include/boost/smart_ptr/local_shared_ptr.hpp b/include/boost/smart_ptr/local_shared_ptr.hpp
index 86c94d5..19051df 100644
--- a/include/boost/smart_ptr/local_shared_ptr.hpp
+++ b/include/boost/smart_ptr/local_shared_ptr.hpp
@@ -11,6 +11,7 @@
 //
 //  See http://www.boost.org/libs/smart_ptr/ for documentation.
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/smart_ptr/shared_ptr.hpp>
 
 namespace boost
diff --git a/include/boost/smart_ptr/make_local_shared.hpp b/include/boost/smart_ptr/make_local_shared.hpp
index 23114fe..2ad55a7 100644
--- a/include/boost/smart_ptr/make_local_shared.hpp
+++ b/include/boost/smart_ptr/make_local_shared.hpp
@@ -11,6 +11,7 @@
 //
 //  See http://www.boost.org/libs/smart_ptr/ for documentation.
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/smart_ptr/make_local_shared_object.hpp>
 #include <boost/smart_ptr/make_local_shared_array.hpp>
 
diff --git a/include/boost/smart_ptr/make_local_shared_array.hpp b/include/boost/smart_ptr/make_local_shared_array.hpp
index ba88c73..6caf78a 100644
--- a/include/boost/smart_ptr/make_local_shared_array.hpp
+++ b/include/boost/smart_ptr/make_local_shared_array.hpp
@@ -9,6 +9,7 @@ Distributed under the Boost Software License, Version 1.0.
 #ifndef BOOST_SMART_PTR_MAKE_LOCAL_SHARED_ARRAY_HPP
 #define BOOST_SMART_PTR_MAKE_LOCAL_SHARED_ARRAY_HPP
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/core/default_allocator.hpp>
 #include <boost/smart_ptr/allocate_local_shared_array.hpp>
 
diff --git a/include/boost/smart_ptr/make_local_shared_object.hpp b/include/boost/smart_ptr/make_local_shared_object.hpp
index 4545c5e..2226688 100644
--- a/include/boost/smart_ptr/make_local_shared_object.hpp
+++ b/include/boost/smart_ptr/make_local_shared_object.hpp
@@ -11,6 +11,7 @@
 //
 //  See http://www.boost.org/libs/smart_ptr/ for documentation.
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/smart_ptr/local_shared_ptr.hpp>
 #include <boost/smart_ptr/make_shared.hpp>
 #include <boost/type_traits/remove_const.hpp>
diff --git a/include/boost/smart_ptr/make_shared.hpp b/include/boost/smart_ptr/make_shared.hpp
index dd9191c..fd2261b 100644
--- a/include/boost/smart_ptr/make_shared.hpp
+++ b/include/boost/smart_ptr/make_shared.hpp
@@ -11,6 +11,7 @@
 //
 //  See http://www.boost.org/libs/smart_ptr/ for documentation.
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/smart_ptr/make_shared_object.hpp>
 
 #if !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION ) && !defined( BOOST_NO_SFINAE )
diff --git a/include/boost/smart_ptr/make_shared_array.hpp b/include/boost/smart_ptr/make_shared_array.hpp
index 785eb87..10dfdaa 100644
--- a/include/boost/smart_ptr/make_shared_array.hpp
+++ b/include/boost/smart_ptr/make_shared_array.hpp
@@ -8,6 +8,7 @@ Distributed under the Boost Software License, Version 1.0.
 #ifndef BOOST_SMART_PTR_MAKE_SHARED_ARRAY_HPP
 #define BOOST_SMART_PTR_MAKE_SHARED_ARRAY_HPP
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/core/default_allocator.hpp>
 #include <boost/smart_ptr/allocate_shared_array.hpp>
 
diff --git a/include/boost/smart_ptr/make_shared_object.hpp b/include/boost/smart_ptr/make_shared_object.hpp
index d726ec3..12a7bac 100644
--- a/include/boost/smart_ptr/make_shared_object.hpp
+++ b/include/boost/smart_ptr/make_shared_object.hpp
@@ -11,6 +11,7 @@
 //
 //  See http://www.boost.org/libs/smart_ptr/ for documentation.
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/config.hpp>
 #include <boost/move/core.hpp>
 #include <boost/move/utility_core.hpp>
diff --git a/include/boost/smart_ptr/make_unique.hpp b/include/boost/smart_ptr/make_unique.hpp
index 1834007..c2c6ef3 100644
--- a/include/boost/smart_ptr/make_unique.hpp
+++ b/include/boost/smart_ptr/make_unique.hpp
@@ -8,6 +8,7 @@ Distributed under the Boost Software License, Version 1.0.
 #ifndef BOOST_SMART_PTR_MAKE_UNIQUE_HPP
 #define BOOST_SMART_PTR_MAKE_UNIQUE_HPP
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/type_traits/enable_if.hpp>
 #include <boost/type_traits/is_array.hpp>
 #include <boost/type_traits/is_unbounded_array.hpp>
diff --git a/include/boost/smart_ptr/scoped_array.hpp b/include/boost/smart_ptr/scoped_array.hpp
index 4066b73..d3c250d 100644
--- a/include/boost/smart_ptr/scoped_array.hpp
+++ b/include/boost/smart_ptr/scoped_array.hpp
@@ -10,6 +10,7 @@
 //
 //  See http://www.boost.org/libs/smart_ptr/ for documentation.
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/config.hpp>
 #include <boost/assert.hpp>
 #include <boost/core/checked_delete.hpp>
diff --git a/include/boost/smart_ptr/scoped_ptr.hpp b/include/boost/smart_ptr/scoped_ptr.hpp
index 4ea7642..da8df19 100644
--- a/include/boost/smart_ptr/scoped_ptr.hpp
+++ b/include/boost/smart_ptr/scoped_ptr.hpp
@@ -10,6 +10,7 @@
 //
 //  See http://www.boost.org/libs/smart_ptr/ for documentation.
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/config.hpp>
 #include <boost/assert.hpp>
 #include <boost/core/checked_delete.hpp>
diff --git a/include/boost/smart_ptr/shared_array.hpp b/include/boost/smart_ptr/shared_array.hpp
index 34e8ec5..05933e0 100644
--- a/include/boost/smart_ptr/shared_array.hpp
+++ b/include/boost/smart_ptr/shared_array.hpp
@@ -14,6 +14,8 @@
 //  See http://www.boost.org/libs/smart_ptr/ for documentation.
 //
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
+
 #include <boost/config.hpp>   // for broken compiler workarounds
 
 #include <memory>             // TR1 cyclic inclusion fix
diff --git a/include/boost/smart_ptr/shared_ptr.hpp b/include/boost/smart_ptr/shared_ptr.hpp
index b26fa2d..e5993aa 100644
--- a/include/boost/smart_ptr/shared_ptr.hpp
+++ b/include/boost/smart_ptr/shared_ptr.hpp
@@ -14,6 +14,7 @@
 //  See http://www.boost.org/libs/smart_ptr/ for documentation.
 //
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/smart_ptr/detail/shared_count.hpp>
 #include <boost/smart_ptr/detail/sp_convertible.hpp>
 #include <boost/smart_ptr/detail/sp_nullptr_t.hpp>
diff --git a/include/boost/smart_ptr/weak_ptr.hpp b/include/boost/smart_ptr/weak_ptr.hpp
index 16eea67..2022bce 100644
--- a/include/boost/smart_ptr/weak_ptr.hpp
+++ b/include/boost/smart_ptr/weak_ptr.hpp
@@ -13,6 +13,7 @@
 //  See http://www.boost.org/libs/smart_ptr/ for documentation.
 //
 
+#include <boost/smart_ptr/detail/requires_cxx11.hpp>
 #include <boost/smart_ptr/detail/shared_count.hpp>
 #include <boost/smart_ptr/shared_ptr.hpp>
 #include <boost/smart_ptr/detail/sp_noexcept.hpp>