Add support for modular build structure.

build.jam

@@ -0,0 +1,48 @@
+# 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/atomic//boost_atomic
+    /boost/bind//boost_bind
+    /boost/chrono//boost_chrono
+    /boost/concept_check//boost_concept_check
+    /boost/config//boost_config
+    /boost/container//boost_container
+    /boost/container_hash//boost_container_hash
+    /boost/core//boost_core
+    /boost/date_time//boost_date_time
+    /boost/exception//boost_exception
+    /boost/function//boost_function
+    /boost/io//boost_io
+    /boost/move//boost_move
+    /boost/optional//boost_optional
+    /boost/predef//boost_predef
+    /boost/preprocessor//boost_preprocessor
+    /boost/smart_ptr//boost_smart_ptr
+    /boost/static_assert//boost_static_assert
+    /boost/system//boost_system
+    /boost/throw_exception//boost_throw_exception
+    /boost/tuple//boost_tuple
+    /boost/type_traits//boost_type_traits
+    /boost/utility//boost_utility
+    /boost/winapi//boost_winapi ;
+
+project /boost/thread
+    : common-requirements
+        <include>include
+    ;
+
+explicit
+    [ alias boost_thread : build//boost_thread ]
+    [ alias all : boost_thread example test ]
+    ;
+
+call-if : boost-library thread
+    : install boost_thread
+    ;
+

build/Jamfile.v2

@@ -35,18 +35,20 @@
 import os ;
 import indirect ;
 import path ;
-import configure ; 
+import configure ;
 import threadapi-feature ;
 
 exe has_atomic_flag_lockfree : ../build/has_atomic_flag_lockfree_test.cpp ;
 
-project boost/thread
+project
     : source-location ../src
+    : common-requirements <library>$(boost_dependencies)
     : requirements <threading>multi
       #<link>static:<define>BOOST_THREAD_STATIC_LINK=1
       #<link>shared:<define>BOOST_THREAD_DYN_LINK=1
       <link>static:<define>BOOST_THREAD_BUILD_LIB=1
       <link>shared:<define>BOOST_THREAD_BUILD_DLL=1
+      -<tag>@%boostcpp.tag
       -<tag>@$(BOOST_JAMROOT_MODULE)%$(BOOST_JAMROOT_MODULE).tag
       <tag>@$(__name__).tag
       <toolset>gcc:<cxxflags>-Wno-long-long
@@ -139,6 +141,7 @@ project boost/thread
       #<define>BOOST_THREAD_THROW_IF_PRECONDITION_NOT_SATISFIED
       #<define>BOOST_SYSTEM_NO_DEPRECATED
       #<define>BOOST_THREAD_DONT_PROVIDE_INTERRUPTIONS
+      <define>BOOST_THREAD_NO_LIB=1
     ;
 
 rule tag ( name : type ? : property-set )
@@ -156,8 +159,15 @@ rule tag ( name : type ? : property-set )
     }
 
     # forward to the boost tagging rule
-    return  [ indirect.call $(BOOST_JAMROOT_MODULE)%$(BOOST_JAMROOT_MODULE).tag
-                $(result) : $(type) : $(property-set) ] ;
+    if $(BOOST_JAMROOT_MODULE)
+    {
+        return  [ indirect.call $(BOOST_JAMROOT_MODULE)%$(BOOST_JAMROOT_MODULE).tag
+                    $(result) : $(type) : $(property-set) ] ;
+    }
+    else
+    {
+        return $(result) ;
+    }
 }
 
 rule win32_pthread_paths ( properties * )
@@ -269,10 +279,10 @@ rule requirements ( properties * )
             }
         }
         result += <define>BOOST_THREAD_DONT_USE_CHRONO ;
-        if ! [ configure.builds has_atomic_flag_lockfree 
-            : $(properties) : "lockfree boost::atomic_flag" ]  { 
-           result += <library>/boost/atomic//boost_atomic ; 
-        } 
+        if ! [ configure.builds has_atomic_flag_lockfree
+            : $(properties) : "lockfree boost::atomic_flag" ]  {
+           result += <library>/boost/atomic//boost_atomic ;
+        }
     } else {
         if <threadapi>win32 in $(properties)
         {
@@ -315,5 +325,3 @@ lib boost_thread
       <link>static:<define>BOOST_THREAD_USE_LIB=1
       <conditional>@usage-requirements
     ;
-
-boost-install boost_thread ;

example/Jamfile.v2

@@ -4,7 +4,7 @@
 #  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)
 
-project boost/thread/example 
+project 
     : requirements <library>../build//boost_thread <threading>multi
     ;
 

test/Jamfile.v2

@@ -268,16 +268,15 @@ rule generate_self_contained_header_tests
 
     if ! [ os.environ BOOST_THREAD_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS ]
     {
-        local headers_path = [ path.make $(BOOST_ROOT)/libs/thread/include/boost/thread ] ;
-        for file in [ path.glob-tree $(headers_path) : *.hpp : detail pthread win32 ]
+        for file in [ glob-tree-ex ../include/boost/thread : *.hpp : detail pthread win32 ]
         {
-            local rel_file = [ path.relative-to $(headers_path) $(file) ] ;
+            local rel_file = [ path.relative-to ../include/boost/thread $(file) ] ;
             # Note: The test name starts with '~' in order to group these tests in the test report table, preferably at the end.
             #       All '/' are replaced with '-' because apparently test scripts have a problem with test names containing slashes.
             local test_name = [ regex.replace ~hdr/$(rel_file) "/" "-" ] ;
             #ECHO $(rel_file) ;
-            all_rules += [ compile self_contained_header.cpp : <define>"BOOST_THREAD_TEST_HEADER=$(rel_file)" <dependency>$(file) : $(test_name) ] ;
-            all_rules += [ compile self_contained_header.cpp : <define>"BOOST_THREAD_TEST_HEADER=$(rel_file)" <define>"BOOST_THREAD_TEST_POST_WINDOWS_H" <dependency>$(file) <conditional>@windows-cygwin-specific : $(test_name)-post_winh ] ;
+            all_rules += [ compile self_contained_header.cpp : <define>"BOOST_THREAD_TEST_HEADER=$(rel_file)" <dependency>$(file) <use>../build//boost_thread : $(test_name) ] ;
+            all_rules += [ compile self_contained_header.cpp : <define>"BOOST_THREAD_TEST_HEADER=$(rel_file)" <define>"BOOST_THREAD_TEST_POST_WINDOWS_H" <dependency>$(file) <conditional>@windows-cygwin-specific <use>../build//boost_thread : $(test_name)-post_winh ] ;
         }
     }
 
@@ -1012,7 +1011,7 @@ rule generate_self_contained_header_tests
           #[ thread-run test_10128.cpp ]
           #[ thread-run test_10340.cpp ]
     ;
-    
+
     explicit ts_more_cpp11 ;
     test-suite ts_more_cpp11
     :
@@ -1033,13 +1032,13 @@ rule generate_self_contained_header_tests
     :
           [ thread-run2-noit ./experimental/parallel/v1/exception_list_pass.cpp : exception_list_p ]
     ;
-    
+
     #explicit ts_task_region ;
     test-suite ts_task_region
     :
           [ thread-run2-noit ./experimental/parallel/v2/task_region_pass.cpp : task_region_p ]
     ;
-    
+
     explicit ts_other ;
     test-suite ts_other
     :
@@ -1050,7 +1049,7 @@ rule generate_self_contained_header_tests
     explicit ts_ ;
     test-suite ts_
     :
-          #[ thread-run test_11256.cpp ] 
+          #[ thread-run test_11256.cpp ]
           #[ thread-run test_11256.cpp ]
           #[ thread-run test_11499.cpp ]
           #[ thread-run test_11611.cpp ]
@@ -1060,7 +1059,7 @@ rule generate_self_contained_header_tests
           #[ thread-run test_12949.cpp ]
           #[ thread-run test_13480b.cpp ]
           [ thread-run test_13561.cpp ]
-          
+
     ;
 
     explicit test_time_jumps_1_obj ;