Attach C++ requirements to the library target.

This exposes C++ requirements of Boost.Scope to the downstream users.

Author: Lastique

build.jam

@@ -1,23 +1,43 @@
 # Copyright René Ferdinand Rivera Morell 2024
+# Copyright Andrey Semashev 2025
+#
 # 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)
 
 require-b2 5.2 ;
 
+import-search /boost/config/checks ;
+import config : requires ;
+
 constant boost_dependencies :
     /boost/assert//boost_assert
     /boost/config//boost_config
     /boost/core//boost_core
     /boost/type_traits//boost_type_traits ;
 
+local cxx_requirements = [ requires
+    exceptions
+    sfinae_expr
+    cxx11_constexpr
+    cxx11_noexcept
+    cxx11_decltype
+    cxx11_rvalue_references
+    cxx11_template_aliases
+    cxx11_variadic_templates
+    cxx11_defaulted_functions
+    cxx11_deleted_functions
+    cxx11_function_template_default_args
+    cxx11_hdr_type_traits
+] ;
+
 project /boost/scope
     : common-requirements
         <include>include
     ;
 
 explicit
-    [ alias boost_scope : : : : <library>$(boost_dependencies) ]
+    [ alias boost_scope : : $(cxx_requirements) : : $(cxx_requirements) <library>$(boost_dependencies) ]
     [ alias all : boost_scope test ]
     ;
 

test/Jamfile

@@ -1,4 +1,4 @@
-# Copyright 2023-2024 Andrey Semashev
+# Copyright 2023-2025 Andrey Semashev
 #
 # Distributed under the Boost Software License, Version 1.0.
 # (See accompanying file LICENSE_1_0.txt or copy at
@@ -21,25 +21,18 @@ project
         <c++-template-depth>1024
 
         [ requires
-            # Requirements of Boost.Scope implementation
             exceptions
-            sfinae_expr
-            cxx11_constexpr
-            cxx11_noexcept
-            cxx11_rvalue_references
-            cxx11_decltype
-            cxx11_template_aliases
-            cxx11_variadic_templates
-            cxx11_defaulted_functions
-            cxx11_deleted_functions
-            cxx11_function_template_default_args
-            cxx11_hdr_type_traits
-
-            # Requirements of Boost.Scope tests
             cxx11_nullptr
             cxx11_lambdas
+            cxx11_decltype
+            cxx11_noexcept
+            cxx11_constexpr
+            cxx11_template_aliases
+            cxx11_rvalue_references
             cxx11_auto_declarations
             cxx11_unified_initialization_syntax
+            cxx11_defaulted_functions
+            cxx11_deleted_functions
             cxx11_hdr_system_error
         ]
 

test/run/unique_resource.cpp

@@ -19,7 +19,6 @@
 #include <ostream>
 #include <utility>
 #include <stdexcept>
-#include <type_traits>
 
 template< typename Resource >
 struct empty_resource_deleter