Add support for modular build structure.

benchmark/Jamfile

@@ -1,7 +1,8 @@
 # Copyright 2020 Peter Dimov
 # Distributed under the Boost Software License, Version 1.0.
 
-project : default-build release <link>static ;
+project : default-build release <link>static
+    : requirements <library>/boost/hash2//boost_hash2 ;
 
 exe buffer : buffer.cpp ;
 exe unordered : unordered.cpp ;

build.jam

@@ -0,0 +1,25 @@
+# Copyright René Ferdinand Rivera Morell 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 ;
+
+constant boost_dependencies :
+    /boost/assert//boost_assert
+    /boost/config//boost_config
+    /boost/container_hash//boost_container_hash
+    /boost/describe//boost_describe
+    /boost/mp11//boost_mp11 ;
+
+project /boost/hash2
+    ;
+
+explicit
+    [ alias boost_hash2 : : :
+        : <library>$(boost_dependencies) <include>include ]
+    [ alias all : boost_hash2 test benchmark example ]
+    ;
+
+call-if : boost-library hash2
+    ;

example/Jamfile

@@ -1,7 +1,8 @@
 # Copyright 2020, 2024 Peter Dimov
 # Distributed under the Boost Software License, Version 1.0.
 
-project : default-build release <link>static ;
+project : default-build release <link>static
+    : requirements <library>/boost/hash2//boost_hash2 ;
 
 exe md5sum : md5sum.cpp ;
 exe hash2sum : hash2sum.cpp ;

test/Jamfile

@@ -17,6 +17,7 @@ project
   : requirements
 
     $(werror)
+    <library>/boost/hash2//boost_hash2
   ;
 
 # type traits