Add support for modular build structure.

build.jam

@@ -0,0 +1,25 @@
+# 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/assert//boost_assert
+    /boost/config//boost_config
+    /boost/mp11//boost_mp11 ;
+
+project /boost/variant2
+    : common-requirements
+        <include>include
+    ;
+
+explicit
+    [ alias boost_variant2 : : : : <library>$(boost_dependencies) ]
+    [ alias all : boost_variant2 test ]
+    ;
+
+call-if : boost-library variant2
+    ;
+

test/Jamfile

@@ -7,18 +7,23 @@
 #  http://www.boost.org/LICENSE_1_0.txt
 
 import testing ;
-import ../../config/checks/config : requires ;
+import-search /boost/config/checks ;
+import config : requires ;
 
 project
   : default-build
 
     <warnings>extra
 
   : requirements
+    <library>/boost/config//boost_config
+    <library>/boost/container_hash//boost_container_hash
+    <library>/boost/core//boost_core
 
     <toolset>msvc:<warnings-as-errors>on
     <toolset>gcc:<warnings-as-errors>on
     <toolset>clang:<warnings-as-errors>on
+
   ;
 
 run quick.cpp ;
@@ -125,7 +130,7 @@ run variant_visit_by_index.cpp ;
 run variant_ostream_insert.cpp ;
 run is_output_streamable.cpp ;
 
-local JSON = <library>/boost//json/<warnings>off "<toolset>msvc-14.0:<build>no" "<toolset>msvc-14.2:<cxxflags>-wd5104" "<undefined-sanitizer>norecover:<link>static" ;
+local JSON = <library>/boost/json//boost_json/<warnings>off "<toolset>msvc-14.0:<build>no" "<toolset>msvc-14.2:<cxxflags>-wd5104" "<undefined-sanitizer>norecover:<link>static" ;
 
 run variant_json_value_from.cpp : : : $(JSON) ;
 run variant_json_value_to.cpp : : : $(JSON) ;