Merge pull request #118 from denzor200/fix/config_for_old_stdcpp

Fix for using config.hpp in old standards

include/boost/pfr/config.hpp

@@ -8,7 +8,14 @@
 #define BOOST_PFR_CONFIG_HPP
 #pragma once
 
+#if __cplusplus >= 201402L || (defined(_MSC_VER) && defined(_MSVC_LANG) && _MSC_VER > 1900)
 #include <type_traits> // to get non standard platform macro definitions (__GLIBCXX__ for example)
+#endif
+
+/// \file boost/pfr/config.hpp
+/// Contains all the macros that describe Boost.PFR configuration, like BOOST_PFR_ENABLED
+///
+/// \note This header file doesn't require C++14 Standard and supports all C++ compilers, even pre C++14 compilers (C++11, C++03...).
 
 // Reminder:
 //  * MSVC++ 14.2 _MSC_VER == 1927 <- Loophole is known to work (Visual Studio ????)

test/Jamfile

@@ -0,0 +1,9 @@
+#  Copyright (C) 2023 Denis Mikhailov
+#
+# Use, modification and distribution is subject to 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)
+#
+
+build-project config ;
+build-project core ;

test/appveyor.yml

@@ -32,6 +32,10 @@ skip_tags: true
 
 environment:
   matrix:
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      TOOLSET: msvc-9.0
+      ADDRMD: 32
+      CXXSTD: latest # fake
 #    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
 #      TOOLSET: msvc # TODO: clang-win ???
 #      ADDRMD: 32,64

test/config/Jamfile.v2

@@ -0,0 +1,22 @@
+#  Copyright (C) 2023 Denis Mikhailov
+#
+# Use, modification and distribution is subject to 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)
+#
+
+import python ;
+import testing ;
+import ../../config/checks/config : requires ;
+
+project
+    : source-location .
+    : requirements
+        <define>BOOST_PFR_DETAIL_STRICT_RVALUE_TESTING=1
+    ;
+
+
+test-suite pfr_tests
+  :
+    [ run print_config.cpp : : : <test-info>always_show_run_output : auto_engine_config ]
+  ;

test/core/Jamfile.v2

@@ -40,7 +40,7 @@ explicit compiler_supports_loophole ;
 
 local DISABLE_ON_MSVC = ; #<toolset>msvc:<build>no ;
 local REQUIRE_LOOPHOLE =
-    [ check-target-builds ../test//compiler_supports_loophole : : <build>no ]
+    [ check-target-builds ../core//compiler_supports_loophole : : <build>no ]
   ;
 
 local STRUCTURED_BINDING_ENGINE = <define>BOOST_PFR_USE_LOOPHOLE=0 <define>BOOST_PFR_USE_CPP17=1 [ requires cxx17_structured_bindings ] ;
@@ -49,8 +49,6 @@ local CLASSIC_ENGINE = <define>BOOST_PFR_USE_LOOPHOLE=0 <define>BOOST_PFR_USE_CP
 
 test-suite pfr_tests
   :
-    [ run print_config.cpp : : : <test-info>always_show_run_output : auto_engine_config ]
-
     [ run offset_based_getter.cpp ]
 
     [ run can_be_as_fallback_in_the_fusion.cpp ]
@@ -62,9 +60,9 @@ test-suite pfr_tests
     [ run test_tuple_sizes_on.cpp : : : <define>BOOST_PFR_RUN_TEST_ON="std::size_t" : test_tuple_sizes_on_size_ts ]
 
     [ run run/motivating_example.cpp      : : : : auto_engine_motivating ]
-    [ run ../example/sample_printing.cpp  : : : : auto_engine_sample_printing ]
-    [ run ../example/get.cpp              : : : : auto_engine_get ]
-    [ run ../example/quick_examples.cpp   : : : : auto_engine_quick ]
+    [ run ../../example/sample_printing.cpp  : : : : auto_engine_sample_printing ]
+    [ run ../../example/get.cpp              : : : : auto_engine_get ]
+    [ run ../../example/quick_examples.cpp   : : : : auto_engine_quick ]
   ;
 
 local BLACKLIST_TESTS_FOR_LOOPHOLE =
@@ -97,7 +95,7 @@ local BLACKLIST_TESTS_FOR_CLASSIC =
     tie_anonymous_const_field
   ;
 
-for local source_file in [ glob ./run/*.cpp ] [ glob ../example/*.cpp ]
+for local source_file in [ glob ./run/*.cpp ] [ glob ../../example/*.cpp ]
 {
     local target_name = $(source_file[1]:B) ;
     pfr_tests += [ run $(source_file) : : : $(STRUCTURED_BINDING_ENGINE) : $(target_name)_sb ] ;
@@ -131,5 +129,5 @@ for local source_file in [ glob ./compile-fail/*.cpp ]
 
 if [ python.configured ]
 {
-    testing.make-test run-pyd : ../misc/generate_cpp17.py ;
+    testing.make-test run-pyd : ../../misc/generate_cpp17.py ;
 }