Add support for modular build structure.

build.jam

@@ -0,0 +1,31 @@
+# Copyright René Ferdinand Rivera Morell 2023-2024
+# 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 ;
+
+constant boost_dependencies :
+    /boost/config//boost_config
+    /boost/core//boost_core
+    /boost/function//boost_function
+    /boost/function_types//boost_function_types
+    /boost/mpl//boost_mpl
+    /boost/preprocessor//boost_preprocessor
+    /boost/type_traits//boost_type_traits
+    /boost/typeof//boost_typeof
+    /boost/utility//boost_utility ;
+
+project /boost/functional
+    : common-requirements
+        <include>include
+    ;
+
+explicit
+    [ alias boost_functional : : : : <library>$(boost_dependencies) ]
+    [ alias all : boost_functional test factory/test forward/test overloaded_function/test ]
+    ;
+
+call-if : boost-library functional
+    ;
+

factory/test/Jamfile

@@ -8,6 +8,11 @@
 
 import testing ;
 
+project : requirements
+    <library>/boost/functional//boost_functional
+    <library>/boost/smart_ptr//boost_smart_ptr
+    ;
+
 run value_factory.cpp ;
 run value_factory_args.cpp ;
 run value_factory_move.cpp ;

forward/test/Jamfile

@@ -6,7 +6,8 @@
 
 import testing ;
 
-project forward-tests
+project forward-tests : requirements
+    <library>/boost/functional//boost_functional
     ;
 
 test-suite functional/forward

overloaded_function/doc/Jamfile.v2

@@ -9,8 +9,8 @@ import quickbook ;
 using boostbook ;
 
 doxygen reference
-    :   ../../../../boost/functional/overloaded_function.hpp
-        ../../../../boost/functional/overloaded_function/config.hpp
+    :   ../../include/boost/functional/overloaded_function.hpp
+        ../../include/boost/functional/overloaded_function/config.hpp
     :   <reftitle>"Reference"
         <doxygen:param>PREDEFINED="DOXYGEN"
         <doxygen:param>QUIET=YES

overloaded_function/test/Jamfile.v2

@@ -8,7 +8,9 @@
 import testing ;
 
 # Sun does not automatically detect type-of emulation (force it).
-project : requirements <toolset>sun:<define>BOOST_TYPEOF_EMULATION ;
+project : requirements <toolset>sun:<define>BOOST_TYPEOF_EMULATION
+    <library>/boost/functional//boost_functional
+    ;
 
 run functor.cpp ;
 run make_decl.cpp ;

test/Jamfile.v2

@@ -4,6 +4,8 @@
 
 import testing ;
 
+project : requirements <library>/boost/functional//boost_functional ;
+
 test-suite functional :
     [ run function_test.cpp ]
     ;