From 6faa665ecff4de0cb2dbd308cbcc94ef015c5d07 Mon Sep 17 00:00:00 2001
From: Tinko Sebastian Bartels <mail@tinkobartels.de>
Date: Sun, 28 Jun 2026 16:58:22 +0800
Subject: [PATCH 1/2] [extensions] Require cxx14 in Jamfile in preparation for
 removing it from build.jam re issue #1460

---
 extensions/Jamfile | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/extensions/Jamfile b/extensions/Jamfile
index 97a8f6ac35..7d24f7869a 100644
--- a/extensions/Jamfile
+++ b/extensions/Jamfile
@@ -8,12 +8,20 @@
 # Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
 # http://www.boost.org/LICENSE_1_0.txt)
 
+import-search /boost/config/checks ;
+import config : requires ;
+
 project boost-geometry-extensions
     :
     requirements
         <toolset>msvc:<asynch-exceptions>on
         <library>/boost/geometry//boost_geometry
         <library>/boost/test//included
+        <cxxstd>14
+        [ requires
+            cxx14_constexpr
+            cxx14_return_type_deduction
+        ]
     ;
 
 build-project test ;

From 70b4b191d3c1d5a794e5e1da70b2840715af9a63 Mon Sep 17 00:00:00 2001
From: Tinko Sebastian Bartels <mail@tinkobartels.de>
Date: Sun, 28 Jun 2026 16:59:25 +0800
Subject: [PATCH 2/2] Move cxx14 checks from build.jam to buildable targets to
 address #1460

---
 build.jam                                       | 17 ++---------------
 doc/src/examples/Jamfile                        |  8 ++++++++
 example/Jamfile                                 |  8 ++++++++
 include/boost/geometry/srs/projections/code.hpp |  1 +
 index/Jamfile                                   |  8 ++++++++
 test/Jamfile                                    |  8 +++++++-
 6 files changed, 34 insertions(+), 16 deletions(-)

diff --git a/build.jam b/build.jam
index 30af6dd08f..f3036ec0a5 100644
--- a/build.jam
+++ b/build.jam
@@ -5,9 +5,6 @@
 
 require-b2 5.2 ;
 
-import-search /boost/config/checks ;
-import config : requires ;
-
 constant boost_dependencies :
     /boost/algorithm//boost_algorithm
     /boost/any//boost_any
@@ -41,22 +38,12 @@ constant boost_dependencies :
     /boost/variant//boost_variant
     /boost/variant2//boost_variant2 ;
 
-project /boost/geometry
-    : common-requirements
-        <include>include
-    : requirements
-        [ requires
-            cxx14_constexpr
-            cxx14_return_type_deduction
-        ]
-        <toolset>msvc:<asynch-exceptions>on
-    ;
+project /boost/geometry ;
 
 explicit
-    [ alias boost_geometry : : : : <library>$(boost_dependencies) ]
+    [ alias boost_geometry : : : : <include>include <library>$(boost_dependencies) ]
     [ alias all : boost_geometry test example doc/src/examples index extensions ]
     ;
 
 call-if : boost-library geometry
     ;
-
diff --git a/doc/src/examples/Jamfile b/doc/src/examples/Jamfile
index 8fbe26c603..5327df26ea 100644
--- a/doc/src/examples/Jamfile
+++ b/doc/src/examples/Jamfile
@@ -9,9 +9,17 @@
 # http://www.boost.org/LICENSE_1_0.txt)
 
 
+import-search /boost/config/checks ;
+import config : requires ;
+
 project boost-geometry-doc-src-example
     : requirements
         <library>/boost/geometry//boost_geometry
+        <cxxstd>14
+        [ requires
+            cxx14_constexpr
+            cxx14_return_type_deduction
+        ]
     ;
 
 exe quick_start : quick_start.cpp ;
diff --git a/example/Jamfile b/example/Jamfile
index c2d7f11512..349999d4c0 100644
--- a/example/Jamfile
+++ b/example/Jamfile
@@ -10,10 +10,18 @@
 # http://www.boost.org/LICENSE_1_0.txt)
 
 
+import-search /boost/config/checks ;
+import config : requires ;
+
 project boost-geometry-example
     : requirements
         <library>/boost/geometry//boost_geometry
         <library>/boost/foreach//boost_foreach
+        <cxxstd>14
+        [ requires
+            cxx14_constexpr
+            cxx14_return_type_deduction
+        ]
     ;
 
 exe 01_point_example : 01_point_example.cpp ;
diff --git a/include/boost/geometry/srs/projections/code.hpp b/include/boost/geometry/srs/projections/code.hpp
index 8f03899564..5429df86d1 100644
--- a/include/boost/geometry/srs/projections/code.hpp
+++ b/include/boost/geometry/srs/projections/code.hpp
@@ -11,6 +11,7 @@
 #define BOOST_GEOMETRY_PROJECTIONS_CODE_HPP
 
 
+#include <array>
 #include <cmath>
 
 #include <boost/geometry/srs/projections/dpar.hpp>
diff --git a/index/Jamfile b/index/Jamfile
index c01a4263b9..9b8bb26b93 100644
--- a/index/Jamfile
+++ b/index/Jamfile
@@ -8,10 +8,18 @@
 # Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
 # http://www.boost.org/LICENSE_1_0.txt)
 
+import-search /boost/config/checks ;
+import config : requires ;
+
 project boost-geometry-index
     :
     requirements
         <library>/boost/geometry//boost_geometry
+        <cxxstd>14
+        [ requires
+            cxx14_constexpr
+            cxx14_return_type_deduction
+        ]
         <toolset>msvc:<asynch-exceptions>on
     ;
 
diff --git a/test/Jamfile b/test/Jamfile
index 01d7f16249..cda16411dd 100644
--- a/test/Jamfile
+++ b/test/Jamfile
@@ -14,11 +14,18 @@
 
 import os ;
 import testing ;
+import-search /boost/config/checks ;
+import config : requires ;
 
 project boost-geometry-test
     :
     requirements
         <library>/boost/geometry//boost_geometry
+        <cxxstd>14
+        [ requires
+            cxx14_constexpr
+            cxx14_return_type_deduction
+        ]
         <include>.
         <toolset>msvc:<asynch-exceptions>on
         <toolset>msvc:<cxxflags>/bigobj
@@ -55,4 +62,3 @@ build-project util ;
 build-project views ;
 
 }
-