Merge branch 'develop'

Remove dependencies on Boost.StaticAssert. (#250 )
Boost.StaticAssert has been merged into Boost.Config, so remove the dependency.
2026-07-21 13:13:29 +00:00 · 2026-06-01 01:52:20 +03:00 · 2026-02-06 03:26:58 +02:00 · 2025-07-07 06:39:45 -04:00 · 2025-07-06 22:04:23 -04:00 · 2025-07-06 18:06:39 -07:00
50 changed files with 624 additions and 606 deletions
@@ -0,0 +1,116 @@
+# Copyright 2016, 2017 Peter Dimov
+# Copyright 2017 - 2019 James E. King III
+# Copyright 2019 - 2021 Alexander Grund
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)
+
+#
+# Generic Appveyor build script for boostorg repositories
+# See: https://github.com/boostorg/boost-ci/
+#
+# Instructions for customizing this script for your library:
+#
+# 1. Customize the compilers and language levels you want.
+# 2. If you have more than include/, src/, test/, example/, examples/,
+#    benchmark/ or tools/ directories, set the environment variable DEPINST.
+#    For example if your build uses code in "bench/" and "fog/" directories:
+#      - DEPINST: --include bench --include fog
+# 3. Enable pull request builds in your boostorg/<library> account.
+#
+# That's it - the script will do everything else for you.
+#
+
+version: 1.0.{build}-{branch}
+
+shallow_clone: true
+
+branches:
+  only:
+    - master
+    - develop
+    - /bugfix\/.*/
+    - /feature\/.*/
+    - /fix\/.*/
+    - /pr\/.*/
+
+matrix:
+  fast_finish: false
+  # Adding MAYFAIL to any matrix job allows it to fail but the build stays green:
+  allow_failures:
+    - MAYFAIL: true
+
+environment:
+  global:
+    B2_CI_VERSION: 1
+    GIT_FETCH_JOBS: 4
+    # see: http://www.boost.org/build/doc/html/bbv2/overview/invocation.html#bbv2.overview.invocation.properties
+    # to use the default for a given environment, comment it out; recommend you build debug and release however:
+    # on Windows it is important to exercise all the possibilities, especially shared vs static, however most
+    # libraries that care about this exercise it in their Jamfiles...
+    B2_ADDRESS_MODEL: 32,64
+    B2_LINK: shared,static
+    # B2_THREADING: threading=multi,single
+    B2_VARIANT: release
+    BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS: 1
+
+  matrix:
+    - FLAVOR: Visual Studio 2017 C++2a Strict
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      B2_CXXFLAGS: -permissive-
+      B2_CXXSTD: 2a
+      B2_TOOLSET: msvc-14.1
+
+    - FLAVOR: Visual Studio 2017 C++14/17
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      B2_CXXSTD: 14,17
+      B2_TOOLSET: msvc-14.1
+
+    - FLAVOR: clang-cl
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      B2_ADDRESS_MODEL: 64
+      B2_CXXSTD: 11,14,17
+      B2_TOOLSET: clang-win
+
+    - FLAVOR: Visual Studio 2015, 2013
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      B2_TOOLSET: msvc-12.0,msvc-14.0
+
+    - FLAVOR: Visual Studio 2008, 2010, 2012
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      B2_TOOLSET: msvc-9.0,msvc-10.0,msvc-11.0
+      B2_ADDRESS_MODEL: 32 # No 64bit support
+
+    - FLAVOR: cygwin (32-bit)
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      ADDPATH: C:\cygwin\bin;
+      B2_ADDRESS_MODEL: 32
+      B2_CXXSTD: 03,11,14,1z
+      B2_THREADING: threadapi=pthread
+      B2_TOOLSET: gcc
+
+    - FLAVOR: cygwin (64-bit)
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      ADDPATH: C:\cygwin64\bin;
+      B2_ADDRESS_MODEL: 64
+      B2_CXXSTD: 03,11,14,1z
+      B2_THREADING: threadapi=pthread
+      B2_TOOLSET: gcc
+
+    - FLAVOR: mingw64
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      ADDPATH: C:\mingw-w64\x86_64-8.1.0-posix-seh-rt_v6-rev0\mingw64\bin;
+      B2_ADDRESS_MODEL: 64
+      B2_CXXSTD: 03,11,14,17,2a
+      B2_TOOLSET: gcc
+
+install:
+  - git clone --depth 1 https://github.com/boostorg/boost-ci.git C:\boost-ci-cloned
+  # Copy ci folder if not testing Boost.CI
+  - if NOT "%APPVEYOR_PROJECT_NAME%" == "boost-ci" xcopy /s /e /q /i /y C:\boost-ci-cloned\ci .\ci
+  - rmdir /s /q C:\boost-ci-cloned
+  - ci\appveyor\install.bat
+
+build: off
+
+test_script: ci\build.bat
+
@@ -0,0 +1,23 @@
+# Copyright 2019 - 2021 Alexander Grund
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)
+#
+# Sample codecov configuration file. Edit as required
+
+codecov:
+  max_report_age: off
+  require_ci_to_pass: yes
+  notify:
+    # Increase this if you have multiple coverage collection jobs
+    after_n_builds: 2
+    wait_for_ci: yes
+
+# Change how pull request comments look
+comment:
+  layout: "reach,diff,flags,files,footer"
+
+# Ignore specific files or folders. Glob patterns are supported.
+# See https://docs.codecov.com/docs/ignoring-paths
+ignore:
+  - libs/date_time/test/
+  - test
@@ -0,0 +1,50 @@
+#
+# Copyright 2020-2021 Peter Dimov
+# Copyright 2021 Andrey Semashev
+# Copyright 2021-2024 Alexander Grund
+# Copyright 2022-2025 James E. King III
+#
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)
+#
+# This workflow uses the Boost.CI reusable workflow which builds a variety of
+# configurations of your project, runs tests, and generates code coverage reports.
+#
+# To use it, copy this file into your repository as `.github/workflows/ci.yml` and
+# customize it appropriately.
+# 
+---
+name: Boost.CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+      - develop
+      - bugfix/**
+      - feature/**
+      - fix/**
+      - pr/**
+    paths-ignore:
+      - LICENSE
+      - meta/**
+      - README.md
+
+jobs:
+  call-boost-ci:
+    name: Run Boost.CI
+    uses: boostorg/boost-ci/.github/workflows/reusable.yml@master
+    with:
+      # no endian branches
+      enable_multiarch: false
+      # serialization has issues, not enough time to add suppressions
+      enable_sanitizers: false
+      # these compilers fail
+      exclude_compiler: 'gcc-4.7,gcc-4.8,gcc-4.9,gcc-5,clang-3.5,clang-3.6,clang-3.7,clang-3.8'
+      # the tests take a while; this reduces the load a bit and there isn't any C++20 specific code
+      exclude_cxxstd: '98,03,0x,2a,20'
+    secrets:
+      CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+      COVERITY_SCAN_NOTIFICATION_EMAIL: ${{ secrets.COVERITY_SCAN_NOTIFICATION_EMAIL }}
+      COVERITY_SCAN_TOKEN: ${{ secrets.COVERITY_SCAN_TOKEN }}
@@ -1,231 +0,0 @@
-# Copyright 2016 Peter Dimov
-# Copyright 2017 - 2019 James E. King III
-# Distributed under the Boost Software License, Version 1.0.
-# (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)
-
-#
-# Generic Travis CI build script for boostorg repositories
-# See: https://github.com/boostorg/boost-ci
-#
-# Instructions for customizing this script for your library:
-#
-# 1. Customize the compilers and language levels you want in the 'jobs'.
-# 2. If you have more than include/, src/, test/, example/, examples/, or
-#    tools/ directories, modify your Travis CI project and add the environment
-#    variable DEPINST.  For example if your build uses code in "bench/" and
-#    "fog/" directories, then set DEPINST to the following:
-#        --include bench --include fog
-# 3. If you want to enable Coverity Scan, you need to provide the environment
-#    variables COVERITY_SCAN_TOKEN and COVERITY_SCAN_NOTIFICATION_EMAIL in
-#    your github settings.
-# 4. Enable pull request builds in your boostorg/<library> account.
-#
-# That's it - the scripts will do everything else for you.
-
-dist: xenial
-language: cpp
-
-env:
-  global:
-  # see: http://www.boost.org/build/doc/html/bbv2/overview/invocation.html#bbv2.overview.invocation.properties
-  # - B2_ADDRESS_MODEL=address-model=64,32
-  # - B2_LINK=link=shared,static
-  # - B2_THREADING=threading=multi,single
-    - B2_VARIANT=variant=release
-
-install:
-  - git clone https://github.com/boostorg/boost-ci.git boost-ci
-  - cp -pr boost-ci/ci boost-ci/.codecov.yml .
-  - source ci/travis/install.sh
-
-addons:
-  apt:
-    packages:
-      - binutils-gold
-      - gdb
-      - libc6-dbg
-
-branches:
-  only:
-    - master
-    - develop
-    - /bugfix\/.*/
-    - /feature\/.*/
-    - /fix\/.*/
-    - /pr\/.*/
-
-script:
-  - cd $BOOST_ROOT/libs/$SELF
-  - ci/travis/build.sh
-
-#
-# Default toolsets in Ubuntu
-#
-#       trusty xenial bionic
-#        14.04  16.04  18.04
-#       ------ ------ ------
-# clang    3.4    3.8    6.0
-#   gcc  4.8.2  5.3.1  7.3.0
-#
-
-anchors:
-  clang-38: &clang-38 { apt: { packages: [ "clang-3.8",
-                                           "libstdc++-6-dev" ], sources: [ "llvm-toolchain-xenial-3.8",
-                                                                           "ubuntu-toolchain-r-test"   ] } }
-  clang-4:  &clang-4  { apt: { packages: [ "clang-4.0",
-                                           "libstdc++-6-dev" ], sources: [ "llvm-toolchain-xenial-4.0",
-                                                                           "ubuntu-toolchain-r-test"   ] } }
-  clang-5:  &clang-5  { apt: { packages: [ "clang-5.0",
-                                           "libstdc++-7-dev" ], sources: [ "llvm-toolchain-xenial-5.0",
-                                                                           "ubuntu-toolchain-r-test"   ] } }
-  clang-6:  &clang-6  { apt: { packages: [ "clang-6.0",
-                                           "libc6-dbg",
-                                           "libc++-dev",
-                                           "libstdc++-8-dev" ], sources: [ "llvm-toolchain-xenial-6.0",
-                                                                           "ubuntu-toolchain-r-test"   ] } }
-  clang-7:  &clang-7  { apt: { packages: [ "clang-7",
-                                           "libc6-dbg",
-                                           "libc++-dev",
-                                           "libstdc++-8-dev" ], sources: [ "llvm-toolchain-xenial-7",
-                                                                           "ubuntu-toolchain-r-test"   ] } }
-  clang-8:  &clang-8  { apt: { packages: [ "clang-8",
-                                           "libc6-dbg",
-                                           "libc++-dev",
-                                           "libstdc++-8-dev" ], sources: [ "llvm-toolchain-xenial-8",
-                                                                           "ubuntu-toolchain-r-test"   ] } }
-  gcc-48:   &gcc-48   { apt: { packages: [ "g++-4.8"         ]                                           } }
-  gcc-49:   &gcc-49   { apt: { packages: [ "g++-4.9"         ], sources: [ "ubuntu-toolchain-r-test"   ] } }
-  gcc-5:    &gcc-5    { apt: { packages: [ "g++-5"           ]                                           } }
-  gcc-6:    &gcc-6    { apt: { packages: [ "g++-6"           ], sources: [ "ubuntu-toolchain-r-test"   ] } }
-  gcc-7:    &gcc-7    { apt: { packages: [ "g++-7"           ], sources: [ "ubuntu-toolchain-r-test"   ] } }
-  gcc-8:    &gcc-8    { apt: { packages: [ "g++-8"           ], sources: [ "ubuntu-toolchain-r-test"   ] } }
-  gcc-9:    &gcc-9    { apt: { packages: [ "g++-9"           ], sources: [ "ubuntu-toolchain-r-test"   ] } }
-
-jobs:
-  allow_failures:
-    # https://github.com/boostorg/date_time/issues/111
-    - env:
-        - COMMENT=ubsan
-        - B2_VARIANT=variant=debug
-        - B2_TOOLSET=gcc-8
-        - B2_CXXSTD=03,11,14
-        - B2_CXXFLAGS="undefined-sanitizer=norecover"
-        - B2_DEFINES="define=BOOST_NO_STRESS_TEST=1"
-        - B2_LINKFLAGS="linkflags=-fuse-ld=gold"
-        - UBSAN_OPTIONS=print_stacktrace=1
-        - BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1
-
-  include:
-    # libstdc++
-    - { os: "linux", dist: "trusty",  # xenial has libstdc++ from gcc 5.4.0 with newer ABI
-                     env: [ "B2_TOOLSET=gcc-4.8",     "B2_CXXSTD=03,11",    "BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1" ], addons: *gcc-48    }
-    - { os: "linux", dist: "trusty",  # xenial has libstdc++ from gcc 5.4.0 with newer ABI
-                     env: [ "B2_TOOLSET=gcc-4.9",     "B2_CXXSTD=03,11",    "BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1" ], addons: *gcc-49    }
-    - { os: "linux", env: [ "B2_TOOLSET=gcc-5",       "B2_CXXSTD=03,11"                                                                  ], addons: *gcc-5     }
-    - { os: "linux", env: [ "B2_TOOLSET=gcc-6",       "B2_CXXSTD=11,14",    "BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1" ], addons: *gcc-6     }
-    - { os: "linux", env: [ "B2_TOOLSET=gcc-7",       "B2_CXXSTD=14,17",    "BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1" ], addons: *gcc-7     }
-    - { os: "linux", env: [ "B2_TOOLSET=gcc-8",       "B2_CXXSTD=17,2a",    "BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1" ], addons: *gcc-8     }
-    - { os: "linux", env: [ "B2_TOOLSET=gcc-9",       "B2_CXXSTD=17,2a",    "BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1" ], addons: *gcc-9     }
-    - { os: "linux", dist: "trusty",  # xenial has libstdc++ from gcc 5.4.0 with newer ABI
-                     env: [ "B2_TOOLSET=clang-3.8",   "B2_CXXSTD=03,11",    "BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1" ], addons: *clang-38  }
-    - { os: "linux", env: [ "B2_TOOLSET=clang-4.0",   "B2_CXXSTD=11,14",    "BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1" ], addons: *clang-4   }
-    - { os: "linux", env: [ "B2_TOOLSET=clang-5.0",   "B2_CXXSTD=11,14",    "BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1" ], addons: *clang-5   }
-    - { os: "linux", env: [ "B2_TOOLSET=clang-6.0",   "B2_CXXSTD=14,17",    "BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1" ], addons: *clang-6   }
-    - { os: "linux", env: [ "B2_TOOLSET=clang-7",     "B2_CXXSTD=17,2a",    "BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1" ], addons: *clang-7   }
-    - { os: "linux", env: [ "B2_TOOLSET=clang-8",     "B2_CXXSTD=17,2a",    "BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1" ], addons: *clang-8   }
-
-    # libc++
-    - { os: "linux", env: [ "B2_TOOLSET=clang-6.0",   "B2_CXXSTD=03,11,14",
-                            "B2_CXXFLAGS=-stdlib=libc++"                   ], addons: *clang-6   }
-    - { os: "osx"  , env: [ "B2_TOOLSET=clang",       "B2_CXXSTD=03,11,17", "BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1" ]                     }
-
-    # to enable Intel ICC define INTEL_ICC_SERIAL_NUMBER and the following:
-    # - { os: "linux", env: [ "B2_TOOLSET=intel-linux", "B2_CXXSTD=11,14,17" ], addons: *gcc-7,
-    #     script: cd $BOOST_ROOT/libs/$SELF && ci/travis/intelicc.sh                               }
-
-    - os: linux
-      env:
-        - COMMENT=codecov.io
-        - B2_CXXSTD=03,11
-        - B2_TOOLSET=gcc-8
-        - B2_DEFINES="define=BOOST_NO_STRESS_TEST=1"
-        - BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1
-      addons: *gcc-8
-      script:
-        - cd $BOOST_ROOT/libs/$SELF
-        - ci/travis/codecov.sh
-
-    - os: linux
-      env:
-        - COMMENT=asan
-        - B2_VARIANT=variant=debug
-        - B2_TOOLSET=gcc-8
-        - B2_CXXSTD=03,11,14
-        - B2_CXXFLAGS="address-sanitizer=norecover"
-        - B2_DEFINES="define=BOOST_NO_STRESS_TEST=1"
-        - BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1
-      addons: *gcc-8
-
-    - os: linux
-      env:
-        - COMMENT=tsan
-        - B2_VARIANT=variant=debug
-        - B2_TOOLSET=gcc-8
-        - B2_CXXSTD=03,11,14
-        - B2_CXXFLAGS="thread-sanitizer=norecover"
-        - B2_DEFINES="define=BOOST_NO_STRESS_TEST=1"
-        - BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1
-      addons: *gcc-8
-
-    - os: linux
-      env:
-        - COMMENT=ubsan
-        - B2_VARIANT=variant=debug
-        - B2_TOOLSET=gcc-8
-        - B2_CXXSTD=03,11,14
-        - B2_CXXFLAGS="undefined-sanitizer=norecover"
-        - B2_DEFINES="define=BOOST_NO_STRESS_TEST=1"
-        # https://github.com/boostorg/build/issues/451 using the gold linker to work around an issue
-        - B2_LINKFLAGS="linkflags=-fuse-ld=gold"
-        - UBSAN_OPTIONS=print_stacktrace=1
-        - BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1
-      addons: *gcc-8
-
-    - os: linux
-      env:
-        - COMMENT=valgrind
-        - B2_TOOLSET=clang-6.0
-        - B2_CXXSTD=03,11,14
-        - B2_DEFINES="define=BOOST_NO_STRESS_TEST=1"
-        - B2_VARIANT=variant=debug
-        - B2_TESTFLAGS=testing.launcher=valgrind
-        - BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1
-        - VALGRIND_OPTS=--error-exitcode=1
-      addons: *clang-6
-      script:
-        - cd $BOOST_ROOT/libs/$SELF
-        - ci/travis/valgrind.sh
-
-    # - os: linux
-    #   env:
-    #     - COMMENT=cppcheck
-    #   script:
-    #     - cd $BOOST_ROOT/libs/$SELF
-    #     - ci/travis/cppcheck.sh
-
-    #################### Jobs to run on pushes to master, develop ###################
-
-    # Coverity Scan
-    - os: linux
-      if: (env(COVERITY_SCAN_NOTIFICATION_EMAIL) IS present) AND (branch IN (develop, master)) AND (type IN (cron, push))
-      env:
-        - COMMENT="Coverity Scan"
-        - B2_TOOLSET=clang
-        - BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS=1
-      script:
-        - cd $BOOST_ROOT/libs/$SELF
-        - ci/travis/coverity.sh
-
-notifications:
-  email:
-    false
@@ -0,0 +1,4 @@
+# https://github.com/boostorg/serialization/issues/122
+vptr:/usr/include/c++/*/bits/ios_base.h
+# https://github.com/boostorg/serialization/issues/193
+# could not figure out how to suppress it
@@ -1,21 +1,52 @@
-# Copyright 2020 Tarmo Pikaro
+# Generated by `boostdep --cmake date_time`
+# Copyright 2020 Peter Dimov
 # Distributed under the Boost Software License, Version 1.0.
-# See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
+# https://www.boost.org/LICENSE_1_0.txt

-cmake_minimum_required( VERSION 3.5 )
-project( BoostDateTime LANGUAGES CXX)
+cmake_minimum_required(VERSION 3.5...3.16)

-add_library( boost_date_time
-    src/gregorian/greg_month.cpp
-)
-add_library( Boost::date_time ALIAS boost_date_time )
+project(boost_date_time VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)

-target_include_directories( boost_date_time PUBLIC include )
-
-target_link_libraries( boost_date_time
-    PUBLIC
-        Boost::config
+add_library(boost_date_time
+  src/gregorian/greg_month.cpp
 )

+add_library(Boost::date_time ALIAS boost_date_time)

+target_include_directories(boost_date_time PUBLIC include)
+
+target_link_libraries(boost_date_time
+  PUBLIC
+    Boost::algorithm
+    Boost::assert
+    Boost::config
+    Boost::core
+    Boost::io
+    Boost::lexical_cast
+    Boost::numeric_conversion
+    Boost::range
+    Boost::smart_ptr
+    Boost::throw_exception
+    Boost::tokenizer
+    Boost::type_traits
+    Boost::utility
+    Boost::winapi
+)
+
+target_compile_definitions(boost_date_time
+  PUBLIC BOOST_DATE_TIME_NO_LIB
+  PRIVATE BOOST_DATE_TIME_SOURCE
+)
+
+if(BUILD_SHARED_LIBS)
+  target_compile_definitions(boost_date_time PUBLIC BOOST_DATE_TIME_DYN_LINK)
+else()
+  target_compile_definitions(boost_date_time PUBLIC BOOST_DATE_TIME_STATIC_LINK)
+endif()
+
+if(BUILD_TESTING AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/test/CMakeLists.txt")
+
+  add_subdirectory(test)
+
+endif()

@@ -1,11 +0,0 @@
-#  Boost.DateTime Library Jamfile
-#
-#  Copyright (c) 2018 James E. King III
-#
-#  Use, modification, and distribution are subject to 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)
-
-# please order by name to ease maintenance
-build-project example ;
-build-project test ;
@@ -6,28 +6,31 @@ Distributed under the [Boost Software License, Version 1.0](http://www.boost.org

 ### Properties

-* C++03
-* Requires Linking
+* C++11
+* Header only

 ### Build Status

-Branch          | Travis | Appveyor | Coverity Scan | codecov.io | Deps | Docs | Tests |
-:-------------: | ------ | -------- | ------------- | ---------- | ---- | ---- | ----- |
-[`master`](https://github.com/boostorg/date_time/tree/master) | [![Build Status](https://travis-ci.org/boostorg/date_time.svg?branch=master)](https://travis-ci.org/boostorg/date_time) | [![Build status](https://ci.appveyor.com/api/projects/status/upf5c528fy09fudk?svg=true)](https://ci.appveyor.com/project/jeking3/date-time-1evbf) | [![Coverity Scan Build Status](https://scan.coverity.com/projects/14908/badge.svg)](https://scan.coverity.com/projects/boostorg-date_time) | [![codecov](https://codecov.io/gh/boostorg/date_time/branch/master/graph/badge.svg)](https://codecov.io/gh/boostorg/date_time/branch/master) | [![Deps](https://img.shields.io/badge/deps-master-brightgreen.svg)](https://pdimov.github.io/boostdep-report/master/date_time.html) | [![Documentation](https://img.shields.io/badge/docs-master-brightgreen.svg)](http://www.boost.org/doc/libs/master/doc/html/date_time.html) | [![Enter the Matrix](https://img.shields.io/badge/matrix-master-brightgreen.svg)](http://www.boost.org/development/tests/master/developer/date_time.html) 
-[`develop`](https://github.com/boostorg/date_time/tree/develop) | [![Build Status](https://travis-ci.org/boostorg/date_time.svg?branch=develop)](https://travis-ci.org/boostorg/date_time) | [![Build status](https://ci.appveyor.com/api/projects/status/upf5c528fy09fudk/branch/develop?svg=true)](https://ci.appveyor.com/project/boostorg/date_time/branch/develop) | [![Coverity Scan Build Status](https://scan.coverity.com/projects/14908/badge.svg)](https://scan.coverity.com/projects/boostorg-date_time) | [![codecov](https://codecov.io/gh/boostorg/date_time/branch/develop/graph/badge.svg)](https://codecov.io/gh/boostorg/date_time/branch/develop) | [![Deps](https://img.shields.io/badge/deps-develop-brightgreen.svg)](https://pdimov.github.io/boostdep-report/develop/date_time.html) | [![Documentation](https://img.shields.io/badge/docs-develop-brightgreen.svg)](http://www.boost.org/doc/libs/develop/doc/html/date_time.html) | [![Enter the Matrix](https://img.shields.io/badge/matrix-develop-brightgreen.svg)](http://www.boost.org/development/tests/develop/developer/date_time.html)
+<!-- boost-ci/tools/makebadges.sh --repo date_time --appveyorbadge upf5c528fy09fudk --codecovbadge nDoh7t8f6g --coverity 14908 -->
+| Branch          | GHA CI | Appveyor | Coverity Scan | codecov.io | Deps | Docs | Tests |
+| :-------------: | ------ | -------- | ------------- | ---------- | ---- | ---- | ----- |
+| [`master`](https://github.com/boostorg/date_time/tree/master) | [![Build Status](https://github.com/boostorg/date_time/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/boostorg/date_time/actions?query=branch:master) | [![Build status](https://ci.appveyor.com/api/projects/status/upf5c528fy09fudk/branch/master?svg=true)](https://ci.appveyor.com/project/cppalliance/date-time/branch/master) | [![Coverity Scan Build Status](https://scan.coverity.com/projects/14908/badge.svg)](https://scan.coverity.com/projects/boostorg-date_time) | [![codecov](https://codecov.io/gh/boostorg/date_time/branch/master/graph/badge.svg?token=nDoh7t8f6g)](https://codecov.io/gh/boostorg/date_time/tree/master) | [![Deps](https://img.shields.io/badge/deps-master-brightgreen.svg)](https://pdimov.github.io/boostdep-report/master/date_time.html) | [![Documentation](https://img.shields.io/badge/docs-master-brightgreen.svg)](https://www.boost.org/doc/libs/master/libs/date_time) | [![Enter the Matrix](https://img.shields.io/badge/matrix-master-brightgreen.svg)](https://www.boost.org/development/tests/master/developer/date_time.html) |
+| [`develop`](https://github.com/boostorg/date_time/tree/develop) | [![Build Status](https://github.com/boostorg/date_time/actions/workflows/ci.yml/badge.svg?branch=develop)](https://github.com/boostorg/date_time/actions?query=branch:develop) | [![Build status](https://ci.appveyor.com/api/projects/status/upf5c528fy09fudk/branch/develop?svg=true)](https://ci.appveyor.com/project/cppalliance/date-time/branch/develop) | [![Coverity Scan Build Status](https://scan.coverity.com/projects/14908/badge.svg)](https://scan.coverity.com/projects/boostorg-date_time) | [![codecov](https://codecov.io/gh/boostorg/date_time/branch/develop/graph/badge.svg?token=nDoh7t8f6g)](https://codecov.io/gh/boostorg/date_time/tree/develop) | [![Deps](https://img.shields.io/badge/deps-develop-brightgreen.svg)](https://pdimov.github.io/boostdep-report/develop/date_time.html) | [![Documentation](https://img.shields.io/badge/docs-develop-brightgreen.svg)](https://www.boost.org/doc/libs/develop/libs/date_time) | [![Enter the Matrix](https://img.shields.io/badge/matrix-develop-brightgreen.svg)](https://www.boost.org/development/tests/develop/developer/date_time.html) |

 ### Directories

-| Name      | Purpose                        |
-| --------- | ------------------------------ |
-| `build`   | build script for link library  |
-| `data`    | timezone database              |
-| `doc`     | documentation                  |
-| `example` | use case examples              |
-| `include` | headers                        |
-| `src`     | source code for link library   |
-| `test`    | unit tests                     |
-| `xmldoc`  | additional documentation       |
+Note that the built library is only for build backward compatibility and contains no symbols.  date_time is now header only.
+
+| Name      | Purpose                                 |
+| --------- | --------------------------------------- |
+| `build`   | build script for optional lib build     |
+| `data`    | timezone database                       |
+| `doc`     | documentation                           |
+| `example` | use case examples                       |
+| `include` | headers                                 |
+| `src`     | source code for optional link library   |
+| `test`    | unit tests                              |
+| `xmldoc`  | documentation source                    |

 ### More information

@@ -35,4 +38,3 @@ Branch          | Travis | Appveyor | Coverity Scan | codecov.io | Deps | Docs |
 * [Report bugs](https://github.com/boostorg/date_time/issues): Be sure to mention Boost version, platform and compiler you're using. A small compilable code sample to reproduce the problem is always good as well.
 * [Submit Pull Requests](https://github.com/boostorg/date_time/pulls) against the **develop** branch. Note that by submitting patches you agree to license your modifications under the [Boost Software License, Version 1.0](http://www.boost.org/LICENSE_1_0.txt).  Be sure to include tests proving your changes work properly.
 * Discussions about the library are held on the [Boost developers mailing list](http://www.boost.org/community/groups.html#main). Be sure to read the [discussion policy](http://www.boost.org/community/policy.html) before posting and add the `[date_time]` tag at the beginning of the subject line.
-
@@ -1,157 +0,0 @@
-# Copyright 2016, 2017 Peter Dimov
-# Copyright (C) 2017 - 2019 James E. King III
-# Distributed under the Boost Software License, Version 1.0.
-# (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)
-
-#
-# Generic Appveyor build script for boostorg repositories
-# See: https://github.com/boostorg/boost-ci/
-#
-# Instructions for customizing this script for your library:
-#
-# 1. Customize the compilers and language levels you want.
-# 2. If you have more than include/, src/, test/, example/, examples/,
-#    benchmark/ or tools/ directories, set the environment variable DEPINST.
-#    For example if your build uses code in "bench/" and "fog/" directories:
-#      - DEPINST: --include bench --include fog
-# 3. Enable pull request builds in your boostorg/<library> account.
-#
-# That's it - the script will do everything else for you.
-#
-
-version: 1.0.{build}-{branch}
-
-shallow_clone: true
-
-branches:
-  only:
-    - master
-    - develop
-    - /bugfix\/.*/
-    - /feature\/.*/
-    - /fix\/.*/
-    - /pr\/.*/
-
-matrix:
-  # Adding MAYFAIL to any matrix job allows it to fail but the build stays green:
-  allow_failures:
-    - MAYFAIL: true
-
-environment:
-  global:
-    # see: http://www.boost.org/build/doc/html/bbv2/overview/invocation.html#bbv2.overview.invocation.properties
-    # to use the default for a given environment, comment it out; recommend you build debug and release however:
-    # on Windows it is important to exercise all the possibilities, especially shared vs static, however most
-    # libraries that care about this exercise it in their Jamfiles...
-    # B2_ADDRESS_MODEL: address-model=64,32
-    # B2_THREADING: threading=multi,single
-    B2_LINK: link=shared,static
-    B2_VARIANT: variant=release
-
-  matrix:
-    - FLAVOR: Visual Studio 2019
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-      B2_ADDRESS_MODEL: address-model=64
-      B2_CXXFLAGS: cxxflags=-permissive-
-      B2_CXXSTD: latest # 2a
-      B2_TOOLSET: msvc-14.2
-
-    - FLAVOR: Visual Studio 2017 C++2a Strict
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      B2_ADDRESS_MODEL: address-model=64
-      B2_CXXFLAGS: cxxflags=-permissive-
-      B2_CXXSTD: latest # 2a
-      B2_TOOLSET: msvc-14.1
-      BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS: 1
-
-    - FLAVOR: Visual Studio 2017 C++17
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      B2_ADDRESS_MODEL: address-model=64
-      B2_CXXSTD: 17
-      B2_TOOLSET: msvc-14.1
-      B2_VARIANT: variant=debug
-      BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS: 1
-
-    - FLAVOR: Visual Studio 2017 C++14 (Default)
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      B2_ADDRESS_MODEL: address-model=64,32
-      B2_TOOLSET: msvc-14.1
-      BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS: 1
-
-    - FLAVOR: clang-cl
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      B2_ADDRESS_MODEL: address-model=64
-      B2_CXXSTD: 11
-      B2_TOOLSET: clang-win
-      BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS: 1
-
-    - FLAVOR: Visual Studio 2015 C++14 (Default)
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      B2_ADDRESS_MODEL: address-model=64,32
-      B2_TOOLSET: msvc-14.0
-      B2_VARIANT: variant=debug
-      BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS: 1
-
-    - FLAVOR: Visual Studio 2010, 2012, 2013
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      B2_TOOLSET: msvc-10.0,msvc-11.0,msvc-12.0
-      BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS: 1
-
-    - FLAVOR: cygwin (32-bit)
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      ADDPATH: C:\cygwin\bin;
-      B2_ADDRESS_MODEL: address-model=32
-      B2_CXXSTD: 03,11
-      # https://github.com/boostorg/test/issues/144
-      B2_DEFINES: define=_POSIX_C_SOURCE=200112L
-      B2_THREADING: threadapi=pthread
-      B2_TOOLSET: gcc
-      B2_VARIANT: variant=debug
-      BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS: 1
-
-    - FLAVOR: cygwin (64-bit)
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      ADDPATH: C:\cygwin64\bin;
-      B2_ADDRESS_MODEL: address-model=64
-      B2_CXXSTD: 11,17
-      # https://github.com/boostorg/test/issues/144
-      B2_DEFINES: define=_POSIX_C_SOURCE=200112L define=__USE_ISOC99
-      B2_THREADING: threadapi=pthread
-      B2_TOOLSET: gcc
-      BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS: 1
-
-    - FLAVOR: mingw32
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      ARCH: i686
-      B2_ADDRESS_MODEL: address-model=32
-      B2_CXXSTD: 03,11
-      SCRIPT: ci\appveyor\mingw.bat
-      B2_VARIANT: variant=debug
-      BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS: 1
-
-    - FLAVOR: mingw64
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      ARCH: x86_64
-      B2_ADDRESS_MODEL: address-model=64
-      B2_CXXSTD: 11,17
-      B2_DEFINES: define=__USE_ISOC99
-      SCRIPT: ci\appveyor\mingw.bat
-      BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS: 1
-
-install:
-  - set SELF=%APPVEYOR_PROJECT_NAME:-=_%
-  - git clone https://github.com/boostorg/boost-ci.git C:\boost-ci
-  - xcopy /s /e /q /i C:\boost-ci\ci .\ci
-  - ci\appveyor\install.bat
-
-build: off
-
-test_script:
-  - set SELF=%APPVEYOR_PROJECT_NAME:-=_%
-  - PATH=%ADDPATH%%PATH%
-  # The definition of B2_TOOLCXX omits B2_CXXSTD= if it was not defined above
-  - IF NOT DEFINED B2_CXXSTD (SET B2_TOOLCXX=toolset=%B2_TOOLSET%) ELSE (SET B2_TOOLCXX=toolset=%B2_TOOLSET% cxxstd=%B2_CXXSTD%)
-  # Echo the complete build command to the build log
-  - IF NOT DEFINED SCRIPT                         (ECHO b2 libs/%SELF:\=/% %B2_TOOLCXX% %B2_CXXFLAGS% %B2_DEFINES% %B2_THREADING% %B2_ADDRESS_MODEL% %B2_LINK% %B2_THREADING% %B2_VARIANT% -j3)
-  # Now go build...
-  - IF DEFINED SCRIPT (call libs\%SELF%\%SCRIPT%) ELSE (b2 libs/%SELF:\=/% %B2_TOOLCXX% %B2_CXXFLAGS% %B2_DEFINES% %B2_THREADING% %B2_ADDRESS_MODEL% %B2_LINK% %B2_THREADING% %B2_VARIANT% -j3)
@@ -0,0 +1,37 @@
+# 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/algorithm//boost_algorithm
+    /boost/assert//boost_assert
+    /boost/config//boost_config
+    /boost/core//boost_core
+    /boost/io//boost_io
+    /boost/lexical_cast//boost_lexical_cast
+    /boost/numeric_conversion//boost_numeric_conversion
+    /boost/range//boost_range
+    /boost/smart_ptr//boost_smart_ptr
+    /boost/throw_exception//boost_throw_exception
+    /boost/tokenizer//boost_tokenizer
+    /boost/type_traits//boost_type_traits
+    /boost/utility//boost_utility
+    /boost/winapi//boost_winapi ;
+
+project /boost/date_time
+    : common-requirements
+        <include>include
+    ;
+
+explicit
+    [ alias boost_date_time : build//boost_date_time ]
+    [ alias all : boost_date_time example test ]
+    ;
+
+call-if : boost-library date_time
+    : install boost_date_time
+    ;
+
@@ -1,5 +1,5 @@
 # Copyright (c) 2002-2005 CrystalClear Software, Inc.
-# Use, modification and distribution is subject to the 
+# Use, modification and distribution is subject to the
 # Boost Software License, Version 1.0. (See accompanying
 # file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
 #
@@ -7,18 +7,18 @@
 #


-project boost/date_time
+project
+    : common-requirements <library>$(boost_dependencies)
    : requirements
        <define>DATE_TIME_INLINE
-	<link>shared:<define>BOOST_ALL_DYN_LINK=1
+        <link>shared:<define>BOOST_ALL_DYN_LINK=1
    : usage-requirements
        <define>DATE_TIME_INLINE
        <link>shared:<define>BOOST_DATE_TIME_DYN_LINK=1
+        <define>BOOST_DATE_TIME_NO_LINK=1
    : source-location ../src
    ;

 # greg_month.cpp is now just a stub so that there is
 # still a boost_date_time library to link for backward compatibility
 lib boost_date_time : gregorian/greg_month.cpp ;
-
-boost-install boost_date_time ;
@@ -4,6 +4,8 @@
 # (See accompanying file LICENSE_1_0.txt or copy at
 # http://www.boost.org/LICENSE_1_0.txt)

+require-b2 5.2 ;
+
 ###############################################################################
 alias boostdoc
    : ../xmldoc/date_time.xml
@@ -1,4 +1,4 @@
-project libs/date_time/example ;
+project : requirements <library>/boost/date_time//boost_date_time ;

 exe dates_as_strings   : gregorian/dates_as_strings.cpp ;
 exe days_alive         : gregorian/days_alive.cpp ;
@@ -18,19 +18,19 @@ exe days_since_year_start : gregorian/days_since_year_start.cpp ;


 exe local_utc_conversion : posix_time/local_utc_conversion.cpp
-                : <define>BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG  
+                : <define>BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG
                ;

 exe print_hours : posix_time/print_hours.cpp
-                : <define>BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG  
+                : <define>BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG
                ;

 exe time_math   : posix_time/time_math.cpp
-                : <define>BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG  
+                : <define>BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG
                ;

 exe time_periods : posix_time/time_periods.cpp
-                 : <define>BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG  
+                 : <define>BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG
                 ;

 exe simple_time_zone : local_time/simple_time_zone.cpp ;
@@ -41,7 +41,7 @@ exe io_tutorial : tutorial/io_tutorial.cpp ;

 # Copyright (c) 2002-2005
 # CrystalClear Software, Inc.
-# Subject to the Boost Software License, Version 1.0. 
-# (See accompanying file LICENSE_1_0.txt or 
+# Subject to the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or
 # http://www.boost.org/LICENSE_1_0.txt)

@@ -25,7 +25,7 @@ main()
    date d(from_simple_string(s));
    std::cout << to_simple_string(d) << std::endl;
    
-    //Read ISO Standard(CCYYMMDD) and output ISO Extended
+    //Read ISO 8601 Standard(CCYYMMDD) and output ISO 8601 Extended
    std::string ud("20011009"); //2001-Oct-09
    date d1(from_undelimited_string(ud));
    std::cout << to_iso_extended_string(d1) << std::endl;
@@ -83,7 +83,7 @@ int main()
  us_facet->format("%m/%d/%Y");
  std::cout << d1 << std::endl; //  10/01/2002
  
-  // English names, iso order (year-month-day), '-' separator
+  // English names, ISO 8601 order (year-month-day), '-' separator
  us_facet->format("%Y-%b-%d");
  std::cout << d1 << std::endl; //  2002-Oct-01
  
@@ -28,10 +28,6 @@

 // Include extensions to date_duration - comment out to remove this feature
 #define BOOST_DATE_TIME_OPTIONAL_GREGORIAN_TYPES
-// these extensions are known to cause problems with gcc295
-#if defined(__GNUC__) && (__GNUC__ < 3)
-#undef BOOST_DATE_TIME_OPTIONAL_GREGORIAN_TYPES
-#endif

 #if (defined(BOOST_NO_INCLASS_MEMBER_INITIALIZATION) || BOOST_WORKAROUND( BOOST_BORLANDC,  BOOST_TESTED_AT(0x581) ) )
 #define BOOST_DATE_TIME_NO_MEMBER_INIT
@@ -123,26 +119,6 @@ namespace std {
 #  define BOOST_DATE_TIME_DECL
 #endif

-//
-// Automatically link to the correct build variant where possible. 
-// 
-#if !defined(BOOST_ALL_NO_LIB) && !defined(BOOST_DATE_TIME_NO_LIB) && !defined(BOOST_DATE_TIME_SOURCE)
-//
-// Set the name of our library, this will get undef'ed by auto_link.hpp
-// once it's done with it:
-//
-#define BOOST_LIB_NAME boost_date_time
-//
-// If we're importing code from a dll, then tell auto_link.hpp about it:
-//
-#if defined(BOOST_ALL_DYN_LINK) || defined(BOOST_DATE_TIME_DYN_LINK)
-#  define BOOST_DYN_LINK
-#endif
-//
-// And include the header that does the work:
-//
-#include <boost/config/auto_link.hpp>
-#endif  // auto-linking disabled

 #if defined(BOOST_HAS_THREADS) 
 #  if defined(_MSC_VER) || defined(__MWERKS__) || defined(__MINGW32__) ||  defined(__BORLANDC__)
@@ -21,7 +21,7 @@ namespace date_time {
  /*!
    The date template represents an interface shell for a date class
    that is based on a year-month-day system such as the gregorian
-    or iso systems.  It provides basic operations to enable calculation
+    or ISO 8601 systems.  It provides basic operations to enable calculation
    and comparisons.

    <b>Theory</b>
@@ -53,14 +53,14 @@ namespace date_time {
    }
    virtual duration_type get_offset(const date_type& current) const=0;
    virtual duration_type get_neg_offset(const date_type& current) const=0;
-    date_type operator*() {return current_;}
-    date_type* operator->() {return &current_;}
-    bool operator<  (const date_type& d) {return current_ < d;}
-    bool operator<= (const date_type& d) {return current_ <= d;}
-    bool operator>  (const date_type& d) {return current_ > d;}
-    bool operator>= (const date_type& d) {return current_ >= d;}
-    bool operator== (const date_type& d) {return current_ == d;}
-    bool operator!= (const date_type& d) {return current_ != d;}
+    const date_type& operator*() const {return current_;}
+    const date_type* operator->() const {return &current_;}
+    bool operator<  (const date_type& d) const {return current_ < d;}
+    bool operator<= (const date_type& d) const {return current_ <= d;}
+    bool operator>  (const date_type& d) const {return current_ > d;}
+    bool operator>= (const date_type& d) const {return current_ >= d;}
+    bool operator== (const date_type& d) const {return current_ == d;}
+    bool operator!= (const date_type& d) const {return current_ != d;}
  private:
    date_type current_;
  };
@@ -65,7 +65,7 @@ namespace gregorian {
    std::basic_string<charT> s(date_time::date_formatter<date,date_time::iso_format<charT>,charT>::date_to_string(d.begin()));
    return s + sep + date_time::date_formatter<date,date_time::iso_format<charT>,charT>::date_to_string(d.last());
  }
-  //! Date period to iso standard format CCYYMMDD/CCYYMMDD. Example: 20021225/20021231
+  //! Date period to ISO 8601 standard format CCYYMMDD/CCYYMMDD. Example: 20021225/20021231
  /*!\ingroup date_format
   */
  inline std::string to_iso_string(const date_period& d) {
@@ -78,7 +78,7 @@ namespace gregorian {
  inline std::basic_string<charT> to_iso_extended_string_type(const date& d) {
    return date_time::date_formatter<date,date_time::iso_extended_format<charT>,charT>::date_to_string(d);
  }
-  //! Convert to iso extended format string CCYY-MM-DD. Example 2002-12-31
+  //! Convert to ISO 8601 extended format string CCYY-MM-DD. Example 2002-12-31
  /*!\ingroup date_format
   */
  inline std::string to_iso_extended_string(const date& d) {
@@ -90,7 +90,7 @@ namespace gregorian {
  inline std::basic_string<charT> to_iso_string_type(const date& d) {
    return date_time::date_formatter<date,date_time::iso_format<charT>,charT>::date_to_string(d);
  }
-  //! Convert to iso standard string YYYYMMDD. Example: 20021231
+  //! Convert to ISO 8601 standard string YYYYMMDD. Example: 20021231
  /*!\ingroup date_format
   */
  inline std::string to_iso_string(const date& d) {
@@ -35,7 +35,7 @@ namespace gregorian {
    return std::string("[" + d1 + "/" + d2 + "]");
  }

-  //! Date period to iso standard format CCYYMMDD/CCYYMMDD. Example: 20021225/20021231
+  //! Date period to ISO 8601 standard format CCYYMMDD/CCYYMMDD. Example: 20021225/20021231
  /*!\ingroup date_format
   */
  inline std::string to_iso_string(const date_period& d) {
@@ -44,14 +44,14 @@ namespace gregorian {
  }


-  //! Convert to iso extended format string CCYY-MM-DD. Example 2002-12-31
+  //! Convert to ISO 8601 extended format string CCYY-MM-DD. Example 2002-12-31
  /*!\ingroup date_format
   */
  inline std::string to_iso_extended_string(const date& d) {
    return date_time::date_formatter<date,date_time::iso_extended_format<char> >::date_to_string(d);
  }

-  //! Convert to iso standard string YYYYMMDD. Example: 20021231
+  //! Convert to ISO 8601 standard string YYYYMMDD. Example: 20021231
  /*!\ingroup date_format
   */
  inline std::string to_iso_string(const date& d) {
@@ -74,18 +74,8 @@ namespace gregorian {
    {}
    //! Constructor for infinities, not a date, max and min date
    BOOST_CXX14_CONSTEXPR explicit date(special_values sv):
-      date_time::date<date, gregorian_calendar, date_duration>(date_rep_type::from_special(sv))
-    {
-      if (sv == min_date_time)
-      {
-        *this = date(1400, 1, 1);
-      }
-      if (sv == max_date_time)
-      {
-        *this = date(9999, 12, 31);
-      }
-
-    }
+      date_time::date<date, gregorian_calendar, date_duration>(from_special_adjusted(sv))
+    {}
    //!Return the Julian Day number for the date.
    BOOST_CXX14_CONSTEXPR date_int_type julian_day() const
    {
@@ -105,7 +95,7 @@ namespace gregorian {
      ymd_type ymd = year_month_day();
      return gregorian_calendar::modjulian_day_number(ymd);
    }
-    //!Return the iso 8601 week number 1..53
+    //!Return the ISO 8601 week number 1..53
    BOOST_CXX14_CONSTEXPR int week_number() const
    {
      ymd_type ymd = year_month_day();
@@ -129,6 +119,15 @@ namespace gregorian {

   private:

+    BOOST_CXX14_CONSTEXPR date_rep_type from_special_adjusted(special_values sv)
+    {
+      switch (sv)
+      {
+        case min_date_time: return gregorian_calendar::day_number(ymd_type(1400, 1, 1));
+        case max_date_time: return gregorian_calendar::day_number(ymd_type(9999, 12, 31));
+        default: return date_rep_type::from_special(sv);
+      }
+    }
  };

  inline BOOST_CXX14_CONSTEXPR
@@ -64,12 +64,12 @@ namespace gregorian {
    return date_time::parse_date<date>(s, date_time::ymd_order_dmy);
  }
  
-  //! From iso type date string where with order year-month-day eg: 20020125
+  //! From ISO 8601 type date string where with order year-month-day eg: 20020125
  inline date from_undelimited_string(const std::string& s) {
    return date_time::parse_undelimited_date<date>(s);
  }

-  //! From iso type date string where with order year-month-day eg: 20020125
+  //! From ISO 8601 type date string where with order year-month-day eg: 20020125
  inline date date_from_iso_string(const std::string& s) {
    return date_time::parse_undelimited_date<date>(s);
  }
@@ -25,8 +25,8 @@ namespace date_time {
    return d;
  }

-  //!Return the iso week number for the date
-  /*!Implements the rules associated with the iso 8601 week number.
+  //!Return the ISO 8601 week number for the date
+  /*!Implements the rules associated with the ISO 8601 week number.
    Basically the rule is that Week 1 of the year is the week that contains
    January 4th or the week that contains the first Thursday in January.
    Reference for this algorithm is the Calendar FAQ by Claus Tondering, April 2000.
@@ -77,7 +77,7 @@ namespace date_time {
    unsigned short a = static_cast<unsigned short>((14-ymd.month)/12);
    unsigned short y = static_cast<unsigned short>(ymd.year + 4800 - a);
    unsigned short m = static_cast<unsigned short>(ymd.month + 12*a - 3);
-    unsigned long  d = ymd.day + ((153*m + 2)/5) + 365*y + (y/4) - (y/100) + (y/400) - 32045;
+    unsigned long  d = static_cast<unsigned long>(ymd.day) + ((153*m + 2)/5) + 365*y + (y/4) - (y/100) + (y/400) - 32045;
    return static_cast<date_int_type>(d);
  }

@@ -14,11 +14,11 @@
 namespace boost {
 namespace date_time {

-//! Class to provide common iso formatting spec
+//! Class to provide common ISO 8601 formatting spec
 template<class charT>
 class iso_format_base {
 public:
-  //! Describe month format -- its an integer in iso format
+  //! Describe month format -- its an integer in ISO 8601 format
  static month_format_spec month_format()
  {
    return month_as_integer;
@@ -40,17 +40,17 @@ public:
    return "-infinity";
  }

-  //! ISO char for a year -- used in durations
+  //! ISO 8601 char for a year -- used in durations
  static charT year_sep_char()
  {
    return 'Y';
  }
-  //! ISO char for a month
+  //! ISO 8601 char for a month
  static charT month_sep_char()
  {
    return '-';
  }
-  //! ISO char for a day
+  //! ISO 8601 char for a day
  static charT day_sep_char()
  {
    return '-';
@@ -70,7 +70,7 @@ public:
  {
    return ':';
  }
-  //! ISO char for a period
+  //! ISO 8601 char for a period
  static charT period_start_char()
  {
    return 'P';
@@ -143,11 +143,11 @@ public:

 #ifndef BOOST_NO_STD_WSTRING

-//! Class to provide common iso formatting spec
+//! Class to provide common ISO 8601 formatting spec
 template<>
 class iso_format_base<wchar_t> {
 public:
-  //! Describe month format -- its an integer in iso format
+  //! Describe month format -- its an integer in ISO 8601 format
  static month_format_spec month_format()
  {
    return month_as_integer;
@@ -169,17 +169,17 @@ public:
    return L"-infinity";
  }

-  //! ISO char for a year -- used in durations
+  //! ISO 8601 char for a year -- used in durations
  static wchar_t year_sep_char()
  {
    return 'Y';
  }
-  //! ISO char for a month
+  //! ISO 8601 char for a month
  static wchar_t month_sep_char()
  {
    return '-';
  }
-  //! ISO char for a day
+  //! ISO 8601 char for a day
  static wchar_t day_sep_char()
  {
    return '-';
@@ -199,7 +199,7 @@ public:
  {
    return ':';
  }
-  //! ISO char for a period
+  //! ISO 8601 char for a period
  static wchar_t period_start_char()
  {
    return 'P';
@@ -272,7 +272,7 @@ public:

 #endif // BOOST_NO_STD_WSTRING

-//! Format description for iso normal YYYYMMDD
+//! Format description for ISO 8601 normal YYYYMMDD
 template<class charT>
 class iso_format : public iso_format_base<charT> {
 public:
@@ -315,7 +315,7 @@ namespace local_time {

    //! Returns name of associated time zone or "Coordinated Universal Time".
    /*! Optional bool parameter will return time zone as an offset
-     * (ie "+07:00" extended iso format). Empty string is returned for
+     * (ie "+07:00" extended ISO 8601 format). Empty string is returned for
     * classes that do not use a time_zone */
    std::string zone_name(bool as_offset=false) const
    {
@@ -349,7 +349,7 @@ namespace local_time {
    }
    //! Returns abbreviation of associated time zone or "UTC".
    /*! Optional bool parameter will return time zone as an offset
-     * (ie "+0700" iso format). Empty string is returned for classes
+     * (ie "+0700" ISO 8601 format). Empty string is returned for classes
     * that do not use a time_zone */
    std::string zone_abbrev(bool as_offset=false) const
    {
@@ -299,9 +299,7 @@ namespace date_time {
  inline BOOST_CXX14_CONSTEXPR
  bool period<point_rep,duration_rep>::intersects(const period<point_rep,duration_rep>& other) const
  { 
-    return ( contains(other.begin_) ||
-             other.contains(begin_) ||
-             ((other.begin_ < begin_) && (other.last_ >= begin_)));
+    return !is_null() && !other.is_null() && (begin_ < other.end()) && (other.begin_ < end());
  }

  //! Returns the period of intersection or invalid range no intersection
@@ -26,7 +26,7 @@ namespace posix_time {
  inline
  ptime from_time_t(std::time_t t)
  {
-    return ptime(gregorian::date(1970,1,1)) + seconds(static_cast<long>(t));
+    return ptime(gregorian::date(1970,1,1)) + seconds(t);
  }

  //! Function that converts a ptime into a time_t
@@ -97,7 +97,7 @@ namespace posix_time {
          throw; // rethrow original exception
        }
        else {
-          // if the user want's to fail quietly, we simply set the failbit
+          // if the user wants to fail quietly, we simply set the failbit
          is.setstate(std::ios_base::failbit);
        }
      }
@@ -157,7 +157,7 @@ namespace posix_time {
    }// else
    return ss.str();
  }
-  //! Time duration in iso format -hhmmss,fffffff Example: 10:09:03,0123456
+  //! Time duration in ISO 8601 format -hhmmss.fffffff. Example: 10:09:03.0123456
  /*!\ingroup time_format
   */
  inline std::string to_iso_string(time_duration td){
@@ -215,7 +215,7 @@ namespace posix_time {
      return ts;
    }
  }
-  //! Convert iso short form YYYYMMDDTHHMMSS where T is the date-time separator
+  //! Convert ISO 8601 short form YYYYMMDDTHHMMSS where T is the date-time separator
  /*!\ingroup time_format
   */
  inline std::string to_iso_string(ptime t){
@@ -251,7 +251,7 @@ namespace posix_time {
  inline std::wstring to_simple_wstring(time_duration td) {
    return to_simple_string_type<wchar_t>(td);
  }
-  //! Time duration in iso format -hhmmss,fffffff Example: 10:09:03,0123456
+  //! Time duration in ISO 8601 format -hhmmss.fffffff. Example: 10:09:03.0123456
  /*!\ingroup time_format
   */
  inline std::wstring to_iso_wstring(time_duration td){
@@ -266,7 +266,7 @@ namespace posix_time {
  inline std::wstring to_simple_wstring(time_period tp){
    return to_simple_string_type<wchar_t>(tp);
  }
-  //! Convert iso short form YYYYMMDDTHHMMSS where T is the date-time separator
+  //! Convert ISO 8601 short form YYYYMMDDTHHMMSS where T is the date-time separator
  /*!\ingroup time_format
   */
  inline std::wstring to_iso_wstring(ptime t){
@@ -82,7 +82,7 @@ namespace posix_time {
    return ss.str();
  }

-  //! Time duration in iso format -hhmmss,fffffff Example: 10:09:03,0123456
+  //! Time duration in ISO 8601 format -hhmmss.fffffff. Example: 10:09:03.0123456
  /*!\ingroup time_format
   */
  inline
@@ -173,7 +173,7 @@ namespace posix_time {
    return std::string("[" + d1 + "/" + d2 +"]");
  }

-  //! Convert iso short form YYYYMMDDTHHMMSS where T is the date-time separator
+  //! Convert ISO 8601 short form YYYYMMDDTHHMMSS where T is the date-time separator
  /*!\ingroup time_format
   */
  inline
@@ -36,6 +36,10 @@ namespace posix_time {
  }

  inline ptime from_iso_extended_string(const std::string& s) {
+    if (s.size() == 10) { //assume we just have a date which is 10 chars
+      gregorian::date d = gregorian::from_simple_string(s);
+      return ptime( d );
+    }
    return date_time::parse_delimited_time<ptime>(s, 'T');
  }

@@ -97,7 +97,7 @@ namespace boost { namespace date_time {
    //! match() should be called and return value checked.
    //! \param[in]  str  the string to check
    //! \returns  false if it is definitely not a special value
-    static bool likely(const string_type& str)
+    static bool should_call_match(const string_type& str)
    {
        if (!str.empty()) {
            switch (str[0]) {
@@ -481,7 +481,7 @@ namespace date_time {
        boost::algorithm::replace_all(format, unrestricted_hours_format, hours_str);
      }
      // We still have to process restricted hours format specifier. In order to
-      // support parseability of durations in ISO format (%H%M%S), we'll have to
+      // support parseability of durations in ISO 8601 format (%H%M%S), we'll have to
      // restrict the stringified hours length to 2 characters.
      if (format.find(hours_format) != string_type::npos) {
        if (hours_str.empty())
@@ -30,14 +30,14 @@ namespace date_time {
      current_ = current_ - offset_;
      return *this;
    }
-    time_type operator*() {return current_;}
-    time_type* operator->() {return &current_;}
-    bool operator<  (const time_type& t) {return current_ < t;}
-    bool operator<= (const time_type& t) {return current_ <= t;}
-    bool operator!=  (const time_type& t) {return current_ != t;}
-    bool operator== (const time_type& t) {return current_ == t;}
-    bool operator>  (const time_type& t) {return current_ > t;}
-    bool operator>= (const time_type& t) {return current_ >= t;}
+    const time_type& operator*() const {return current_;}
+    const time_type* operator->() const {return &current_;}
+    bool operator<  (const time_type& t) const {return current_ < t;}
+    bool operator<= (const time_type& t) const {return current_ <= t;}
+    bool operator!=  (const time_type& t) const {return current_ != t;}
+    bool operator== (const time_type& t) const {return current_ == t;}
+    bool operator>  (const time_type& t) const {return current_ > t;}
+    bool operator>= (const time_type& t) const {return current_ >= t;}

  private:
    time_type current_;
@@ -183,7 +183,7 @@ namespace date_time {

  }

-  //! Parse time duration part of an iso time of form: [-]hhmmss[.fff...] (eg: 120259.123 is 12 hours, 2 min, 59 seconds, 123000 microseconds)
+  //! Parse time duration part of an ISO 8601 time of form: [-]hhmmss[.fff...] (eg: 120259.123 is 12 hours, 2 min, 59 seconds, 123000 microseconds)
  template<class time_duration>
  inline
  time_duration
@@ -309,7 +309,7 @@ namespace date_time {
    // then from_iso_string should be able to read a special value string
    // the special_values_parser is expensive to set up and not thread-safe
    // so it cannot be static, so we need to be careful about when we use it
-    if (svp_type::likely(s)) {
+    if (svp_type::should_call_match(s)) {
        typedef typename svp_type::stringstream_type ss_type;
        typedef typename svp_type::stream_itr_type itr_type;
        typedef typename svp_type::match_results mr_type;
@@ -12,5 +12,6 @@
    "maintainers": [
        "Jeff Garland <jeff -at- crystalclearsoftware.com>",
        "James E. King III <jking -at- apache.org>"
-    ]
+    ],
+    "cxxstd": "11"
 }
@@ -3,10 +3,12 @@ import path ;
 import regex ;
 import testing ;

+project : requirements <library>/boost/date_time//boost_date_time ;
+
 local DATE_TIME_DYNAMIC_PROPERTIES = <define>BOOST_ALL_DYN_LINK <runtime-link>shared <define>BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG <define>BOOST_ALL_NO_LIB ;
 local DATE_TIME_PROPERTIES = <define>BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG
-  # FIXME 
-  #std::locale-support 
+  # FIXME
+  #std::locale-support
  <define>BOOST_ALL_NO_LIB ;

 # core stuff
@@ -43,12 +45,12 @@ run gregorian/testparse_date.cpp ;
 run gregorian/testperiod.cpp ;

 run gregorian/testgreg_serialize.cpp
-     ../../serialization/build//boost_serialization
+     /boost/serialization//boost_serialization
     : : : <define>DATE_TIME_XML_SERIALIZE
     : testgreg_serialize_xml ;

 run gregorian/testgreg_serialize.cpp
-    ../../serialization/build//boost_serialization
+    /boost/serialization//boost_serialization
    : : :
    : testgreg_serialize ;

@@ -65,7 +67,7 @@ run posix_time/testtime.cpp ;
 run posix_time/testmicrosec_time_clock.cpp ;
 run posix_time/testgreg_duration_operators.cpp ;
 run posix_time/testtime_facet.cpp ;
-run posix_time/testtime_input_facet.cpp 
+run posix_time/testtime_input_facet.cpp
    : : : <define>BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG
    : testtime_input_facet ;

@@ -75,35 +77,35 @@ run posix_time/testtime_formatters.cpp

 # text archive tests
 run posix_time/testtime_serialize.cpp
-    ../../serialization/build//boost_serialization
+    /boost/serialization//boost_serialization
    : : :
    : testtime_serialize ;

 run posix_time/testtime_serialize.cpp
-    ../../serialization/build//boost_serialization
+    /boost/serialization//boost_serialization
    : : : <define>BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG
    : testtime_serialize_std_config ;

 # xml archive tests
 run posix_time/testtime_serialize.cpp
-    ../../serialization/build//boost_serialization
+    /boost/serialization//boost_serialization
    : : :  <define>DATE_TIME_XML_SERIALIZE <define>BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG
    : testtime_serialize_xml_std_config ;

 run posix_time/testtime_serialize.cpp
-    ../../serialization/build//boost_serialization
+    /boost/serialization//boost_serialization
    : : : <define>DATE_TIME_XML_SERIALIZE
    : testtime_serialize_xml ;

 # versioning tests
 run posix_time/testtime_serialize_versioning.cpp
-    ../../serialization/build//boost_serialization
-    : : testtime_serialize_versioning_prev 
+    /boost/serialization//boost_serialization
+    : : testtime_serialize_versioning_prev
    : <define>BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG
    : testtime_serialize_versioning_curr ;

 run posix_time/testtime_serialize_versioning.cpp
-    ../../serialization/build//boost_serialization
+    /boost/serialization//boost_serialization
    : : :  <define>BOOST_DATE_TIME_POSIX_TIME_DURATION_VERSION=0
    : testtime_serialize_versioning_prev ;

@@ -124,7 +126,7 @@ run local_time/testlocal_time.cpp ;
 run local_time/testlocal_time_iterator.cpp ;
 run local_time/testlocal_time_period.cpp ;

-run local_time/testtz_database.cpp 
+run local_time/testtz_database.cpp
     : : ../data/date_time_zonespec.csv local_time/poorly_formed_zonespec.csv
     :  ;
 run local_time/testlocal_time_facet.cpp
@@ -137,17 +139,16 @@ run local_time/testclocks.cpp ;
 #{
 #  local DATE_TIME_PROPERTIES = <define>BOOST_ALL_NO_LIB  <define>USE_DATE_TIME_PRE_1_33_FACET_IO
 #    # FIXME
-#    # std::locale-support toolset::require-boost-spirit-support 
+#    # std::locale-support toolset::require-boost-spirit-support
 #    ;

 # Iterate over all public headers and generate a self-contained header test to check for any missing includes
 # and basic syntax errors.
 if ! [ os.environ BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS ]
 {
-    local headers_path = [ path.make $(BOOST_ROOT)/libs/date_time/include/boost ] ;
-    for file in [ path.glob-tree $(headers_path) : *.hpp ]
+    for file in [ glob-tree-ex ../include/boost : *.hpp ]
    {
-        local rel_file = [ path.relative-to $(headers_path) $(file) ] ;
+        local rel_file = [ path.relative-to ../include/boost $(file) ] ;
        # Note: The test name starts with '~' in order to group these tests in the test report table, preferably at the end.
        #       All '/' are replaced with '-' because apparently test scripts have a problem with test names containing slashes.
        local test_name = [ regex.replace ~hdr/$(rel_file) "/" "-" ] ;
@@ -159,8 +160,8 @@ if ! [ os.environ BOOST_DATE_TIME_TEST_WITHOUT_SELF_CONTAINED_HEADER_TESTS ]

 # Copyright (c) 2000-2020
 # CrystalClear Software, Inc.
-# Subject to the Boost Software License, Version 1.0. 
-# (See accompanying file LICENSE_1_0.txt or 
+# Subject to the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or
 # http://www.boost.org/LICENSE_1_0.txt)


@@ -0,0 +1,22 @@
+# Copyright 2021-2024 Alexander Grund
+# 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
+
+cmake_minimum_required(VERSION 3.5...3.16)
+
+project(cmake_subdir_test LANGUAGES CXX)
+
+# Those 2 should work the same
+# while using find_package for the installed Boost avoids the need to manually specify dependencies
+if(BOOST_CI_INSTALL_TEST)
+    find_package(boost_date_time REQUIRED)
+else()
+    set(BOOST_INCLUDE_LIBRARIES date_time)
+    add_subdirectory(../../../.. deps/boost EXCLUDE_FROM_ALL)
+endif()
+
+add_executable(main main.cpp)
+target_link_libraries(main Boost::date_time)
+
+enable_testing()
+add_test(NAME main COMMAND main)
@@ -0,0 +1,86 @@
+/* A simple example for using a custom_time_zone and a posix_time_zone.
+ */
+
+#include "boost/date_time/local_time/local_time.hpp"
+#include <iostream>
+
+int
+main() 
+{
+  using namespace boost;
+  using namespace local_time;
+  using namespace gregorian;
+  using posix_time::time_duration;
+
+  /***** custom_time_zone *****/
+  
+  // create the dependent objects for a custom_time_zone
+  time_zone_names tzn("Eastern Standard Time", "EST",
+                      "Eastern Daylight Time", "EDT");
+  time_duration utc_offset(-5,0,0);
+  dst_adjustment_offsets adj_offsets(time_duration(1,0,0), 
+                                     time_duration(2,0,0), 
+                                     time_duration(2,0,0));
+  // rules for this zone are:
+  // start on first Sunday of April at 2 am
+  // end on last Sunday of October at 2 am
+  // so we use a first_last_dst_rule
+  first_day_of_the_week_in_month start_rule(Sunday, Apr);
+  last_day_of_the_week_in_month    end_rule(Sunday, Oct);
+  shared_ptr<dst_calc_rule> nyc_rules(new first_last_dst_rule(start_rule, 
+                                                              end_rule));
+  // create more dependent objects for a non-dst custom_time_zone
+  time_zone_names tzn2("Mountain Standard Time", "MST",
+                       "", ""); // no dst means empty dst strings
+  time_duration utc_offset2(-7,0,0);
+  dst_adjustment_offsets adj_offsets2(time_duration(0,0,0), 
+                                      time_duration(0,0,0), 
+                                      time_duration(0,0,0));
+  // no dst means we need a null pointer to the rules
+  shared_ptr<dst_calc_rule> phx_rules;
+
+  // create the custom_time_zones
+  time_zone_ptr nyc_1(new custom_time_zone(tzn, utc_offset, adj_offsets, nyc_rules));
+  time_zone_ptr phx_1(new custom_time_zone(tzn2, utc_offset2, adj_offsets2, phx_rules));
+
+  /***** posix_time_zone *****/
+
+  // create posix_time_zones that are the duplicates of the 
+  // custom_time_zones created above. See posix_time_zone documentation 
+  // for details on full zone names.
+  std::string nyc_string, phx_string;
+  nyc_string = "EST-05:00:00EDT+01:00:00,M4.1.0/02:00:00,M10.5.0/02:00:00";
+  // nyc_string = "EST-05EDT,M4.1.0,M10.5.0"; // shorter when defaults used
+  phx_string = "MST-07"; // no-dst
+  time_zone_ptr nyc_2(new posix_time_zone(nyc_string));
+  time_zone_ptr phx_2(new posix_time_zone(phx_string));
+ 
+
+  /***** show the sets are equal *****/
+
+  std::cout << "The first zone is in daylight savings from:\n " 
+    << nyc_1->dst_local_start_time(2004) << " through "
+    << nyc_1->dst_local_end_time(2004) << std::endl;
+
+  std::cout << "The second zone is in daylight savings from:\n " 
+    << nyc_2->dst_local_start_time(2004) << " through "
+    << nyc_2->dst_local_end_time(2004) << std::endl;
+
+  std::cout << "The third zone (no daylight savings):\n " 
+    << phx_1->std_zone_abbrev() << " and "
+    << phx_1->base_utc_offset() << std::endl;
+
+  std::cout << "The fourth zone (no daylight savings):\n " 
+    << phx_2->std_zone_abbrev() << " and "
+    << phx_2->base_utc_offset() << std::endl;
+
+  return 0;
+}
+
+/*  Copyright 2001-2005: CrystalClear Software, Inc
+ *  http://www.crystalclearsoftware.com
+ *
+ *  Subject to the Boost Software License, Version 1.0.
+ * (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
+ */
+
@@ -48,7 +48,7 @@ main()
  std::cout << "Check local time of microsec_clock against second_clock" << std::endl;

  ptime last = microsec_clock::local_time();
-  int max = 30;
+  int max = 5;
  for (int i=0; i<max; i++)
  {
    // Some systems loop too fast so "last is less" tests fail due to
@@ -64,6 +64,17 @@ main()
    ptime t2 = microsec_clock::local_time();
    std::cout << t2 << std::endl;

+    // sometimes on very slow systems (github actions) a long time 
+    // can pass between syncing to the next second + 300ms (see previous
+    // function) and asking for t2; therefore if the fractional seconds
+    // of t2 are less than 300ms we skip that test loop assuming it
+    // took too long
+    time_duration t2_tod = t2.time_of_day();
+    if (t2_tod.fractional_seconds() < (t2_tod.ticks_per_second() * 3) / 10) {
+        std::cout << "SKIP :: we had a significant host processing delay" << std::endl;
+        continue;
+    }
+
    check("check equality of hours "
          "between second_clock and microsec_clock timestamps",
          t1.time_of_day().hours() == t2.time_of_day().hours());
@@ -90,7 +101,7 @@ main()


  std::cout << "Check universal time of microsec_clock against second_clock" << std::endl;
-  max = 10;
+  max = 5;
  last = microsec_clock::universal_time();
  for (int i=0; i<max; i++)
  {
@@ -107,6 +118,17 @@ main()
    ptime t2 = microsec_clock::universal_time();
    std::cout << t2 << std::endl;

+    // sometimes on very slow systems (github actions) a long time 
+    // can pass between syncing to the next second + 300ms (see previous
+    // function) and asking for t2; therefore if the fractional seconds
+    // of t2 are less than 300ms we skip that test loop assuming it
+    // took too long
+    time_duration t2_tod = t2.time_of_day();
+    if (t2_tod.fractional_seconds() < (t2_tod.ticks_per_second() * 3) / 10) {
+        std::cout << "SKIP :: we had a significant host processing delay" << std::endl;
+        continue;
+    }
+
    check("check equality of hours "
          "between second_clock and microsec_clock timestamps",
          t1.time_of_day().hours() == t2.time_of_day().hours());
@@ -220,6 +220,8 @@ main()
    ptime t27 = from_iso_extended_string(ts10);
    check("parse iso extended time w/ frac sec (dec only): " + ts10,
          t27 == ptime(date(1900,12,31),time_duration(23,0,0,0)));
+
+
 #else
    std::string ts3("20020120T235859.123456");
    ptime t20 = from_iso_string(ts3);
@@ -260,6 +262,35 @@ main()
    ptime t27 = from_iso_extended_string(ts10);
    check("parse iso extended time w/ frac sec (dec only): " + ts10,
          t27 == ptime(date(1900,12,31),time_duration(23,0,0,0)));
+
+    //the following test cases are for this issue:
+    //https://github.com/boostorg/date_time/issues/187
+    try {
+      std::string ts11("1900-12-31"); //date only string
+      ptime t28 = from_iso_extended_string(ts11);
+      check("parse iso extended time date only): " + ts11,
+            t28 == ptime(date(1900,12,31),time_duration(0,0,0,0)));
+    }
+    catch( std::exception& e )
+    {
+      std::cout << e.what() << std::endl;
+      check("parse iso extended time date only): 1900-12-32", false);
+    }
+
+    try {
+      //expect a date-time exception here
+      std::string ts12("1900-1"); //completely bogus string
+      ptime t29 = from_iso_extended_string(ts12);
+      check("parse iso extended time bad string: " + ts12, false);
+      (void) t29; //supress unused compiler warning, this is never reached
+    }
+    catch( std::exception& e )
+    {
+      //Day of month value is out of range 1..31
+      // std::cout << e.what() << std::endl;
+      check("parse iso extended time date only): 1900-1", true);
+    }
+
 #endif // BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG
  }

@@ -306,6 +306,18 @@ main()
        t18 == ptime(date(2032,2,15), time_duration(18,47,14)));
  check("time_t conversion from 1960483634", to_time_t(t18) == tt3);

+#if !defined(BOOST_NO_INT64_T)
+  // 64-bit time_t test (if running with a 64-bit time_t)
+  if (sizeof(std::time_t) >= 8)
+  {
+    std::time_t tt4(INT64_C(11864480887)); 
+    t18 = from_time_t(tt4); //2345-12-21 09:08:07
+    check("time_t conversion of 11864480887", 
+          t18 == ptime(date(2345,12,21), time_duration(9,8,7)));
+    check("time_t conversion from 11864480887", to_time_t(t18) == tt4);
+  }
+#endif
+  
  special_values_tests();

  //min and max constructors
@@ -125,8 +125,8 @@ int main(){
  check("Contains rep", !zero_len.contains(3));
  check("Contains period (not)", !zero_len.contains(a_period(5,8)));
  check("Contains period", p1.contains(zero_len));
-  check("Intersects", zero_len.intersects(p1));
-  check("Intersects", p1.intersects(zero_len));
+  check("Intersects", !zero_len.intersects(p1));
+  check("Intersects", !p1.intersects(zero_len));
  check("Adjacent", zero_len.is_adjacent(a_period(-10,3)));
  check("Adjacent", a_period(-10,3).is_adjacent(zero_len));
  check("Intersection", (zero_len.intersection(p1) == zero_len));
@@ -146,8 +146,8 @@ int main(){
  check("Contains rep in-between (always false)", !null_per.contains(3));
  check("Contains period (not)", !null_per.contains(a_period(7,9)));
  check("Contains period", p1.contains(null_per));
-  check("Intersects", null_per.intersects(p1));
-  check("Intersects", p1.intersects(null_per));
+  check("Intersects", !null_per.intersects(p1));
+  check("Intersects", !p1.intersects(null_per));
  check("Adjacent", null_per.is_adjacent(a_period(-10,5)));
  check("Adjacent", null_per.is_adjacent(a_period(1,10)));

@@ -1,5 +1,5 @@
 # Copyright (c) 2002-2006 CrystalClear Software, Inc.
-# Use, modification and distribution is subject to the 
+# Use, modification and distribution is subject to the
 # Boost Software License, Version 1.0. (See accompanying
 # file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
 #
@@ -9,7 +9,7 @@ import set ;
 using boostbook ;
 using doxygen ;

-boostbook date_time : date_time.xml 
+boostbook date_time : date_time.xml
 	:
        <format>pdf:<xsl:param>boost.url.prefix=http://www.boost.org/doc/libs/release/doc/html
        <dependency>date_time_autodoc
@@ -21,23 +21,23 @@ boostbook date_time : date_time.xml

 # boostbook date_time_doc : exclusive_date_time.xml ;

-# file lists take the form of [ set.difference [ glob include/these ] : [ glob but/not/these ] ] 
+# file lists take the form of [ set.difference [ glob include/these ] : [ glob but/not/these ] ]

-local date_time_files = [ glob ../../../boost/date_time/*.hpp ] ;
+local date_time_files = [ glob ../include/boost/date_time/*.hpp ] ;

-# local date_time_files = [ set.difference  
-# 	[ glob ../../../boost/date_time/*.hpp ] : 
-# 	[ glob ../../../boost/date_time/testfrmwk.hpp 
-# 	#	../../../boost/date_time/time_zone_base.hpp  
-# 	#	../../../boost/date_time/time_zone_names.hpp  
-# 	#	../../../boost/date_time/tz_db_base.hpp  
-# 	#	../../../boost/date_time/dst_transition_generators.hpp 
-# 	] 
+# local date_time_files = [ set.difference
+# 	[ glob ../include/boost/date_time/*.hpp ] :
+# 	[ glob ../include/boost/date_time/testfrmwk.hpp
+# 	#	../../../boost/date_time/time_zone_base.hpp
+# 	#	../../../boost/date_time/time_zone_names.hpp
+# 	#	../../../boost/date_time/tz_db_base.hpp
+# 	#	../../../boost/date_time/dst_transition_generators.hpp
+# 	]
 # 	] ;

-local gregorian_files = [ set.difference  
-	[ glob ../../../boost/date_time/gregorian/*.hpp ] : 
-	[ glob ../../../boost/date_time/gregorian/event_schedule.hpp ]
+local gregorian_files = [ set.difference
+	[ glob ../include/boost/date_time/gregorian/*.hpp ] :
+	[ glob ../include/boost/date_time/gregorian/event_schedule.hpp ]
 	] ;

 #ECHO $(date_time_files) ; # useful for debugging
@@ -45,33 +45,33 @@ local gregorian_files = [ set.difference
 # to build the autodoc files, run bjam --v2 autodoc_target. copy generated
 # file from bin.v2 dir to here. run ref_tag_fix.pl.

-doxygen date_time_autodoc : 
-	$(date_time_files) : 
-        <doxygen:param>ENABLE_PREPROCESSING=NO 
+doxygen date_time_autodoc :
+	$(date_time_files) :
+        <doxygen:param>ENABLE_PREPROCESSING=NO
        <xsl:param>boost.doxygen.reftitle="Date Time Reference"
        <doxygen.doxproc.title>"Date Time Reference"
        <doxygen.doxproc.id>"date_time_reference"
 	;

 doxygen gregorian_autodoc :
-	$(gregorian_files) : 
-        <doxygen:param>ENABLE_PREPROCESSING=NO 
+	$(gregorian_files) :
+        <doxygen:param>ENABLE_PREPROCESSING=NO
        <xsl:param>boost.doxygen.reftitle="Gregorian Reference"
        <doxygen.doxproc.title>"Gregorian Reference"
        <doxygen.doxproc.id>"gregorian_reference"
 	;

 doxygen posix_time_autodoc :
-	[ glob ../../../boost/date_time/posix_time/*.hpp ] : 
-        <doxygen:param>ENABLE_PREPROCESSING=NO 
+	[ glob ../include/boost/date_time/posix_time/*.hpp ] :
+        <doxygen:param>ENABLE_PREPROCESSING=NO
        <xsl:param>boost.doxygen.reftitle="Posix Time Reference"
        <doxygen.doxproc.title>"Posix Time Reference"
        <doxygen.doxproc.id>"posix_time_reference"
 	;

 doxygen local_time_autodoc :
-        [ glob ../../../boost/date_time/local_time/*.hpp ] : 
-        <doxygen:param>ENABLE_PREPROCESSING=NO 
+        [ glob ../include/boost/date_time/local_time/*.hpp ] :
+        <doxygen:param>ENABLE_PREPROCESSING=NO
        <xsl:param>boost.doxygen.reftitle="Local Time Reference"
        <doxygen.doxproc.title>"Local Time Reference"
        <doxygen.doxproc.id>"local_time_reference"
@@ -132,7 +132,7 @@ date d(from_string(ds));</screen></entry>

        <row>
 	  <entry valign="top" morerows="1"><screen>date from_undelimited_string(std::string)</screen></entry>
-	  <entry>From iso type date string where with order year-month-day eg: 20020125</entry>
+	  <entry>From ISO 8601 type date string where with order year-month-day eg: 20020125</entry>
 	</row>
 	<row>
 	  <entry><screen>std::string ds("20020125");
@@ -103,7 +103,7 @@
    us_facet->format("%m/%d/%Y");
    std::cout << d1 << std::endl; //  10/01/2002
    
-    // English names, iso order (year-month-day), '-' separator
+    // English names, ISO 8601 order (year-month-day), '-' separator
    us_facet->format("%Y-%b-%d");
    std::cout << d1 << std::endl; //  2002-Oct-01
    
@@ -328,7 +328,7 @@ mar_mst.shift(hours(48));
          <!-- TODO: the streaming operators have not bee changed from time_period to local_time_period
          <row>
 	    <entry valign="top" morerows="1"><screen>operator&lt;&lt;</screen></entry>
-            <entry>Output streaming operator for time duration. Uses facet to output [date time_of_day/date time_of_day]. The default is format is <code>[YYYY-mmm-DD hh:mm:ss.fffffffff/YYYY-mmm-DD hh:mm:ss.fffffffff]</code> string where <code>mmm</code> is 3 char month name and the fractional seconds are left out when zero.</entry>
+            <entry>Output streaming operator for time duration. Uses facet to output [date time_of_day/date time_of_day]. The default is format is <code>[YYYY-mmm-DD hh:mm:ss.fffffffff/YYYY-mmm-DD hh:mm:ss.fffffffff]</code> string where <code>mmm</code> is 3 char month name and the fractional seconds are only included if non-zero.</entry>
 	  </row>
 	  <row>
            <entry><screen>[2002-Jan-01 01:25:10.000000001/ \
@@ -337,7 +337,7 @@ mar_mst.shift(hours(48));

 	  <row>
 	    <entry valign="top" morerows="1"><screen>operator&gt;&gt;</screen></entry>
-            <entry>Input streaming operator for time duration. Uses facet to read [date time_of_day/date time_of_day]. The default is format is <code>[YYYY-mmm-DD hh:mm:ss.fffffffff/YYYY-mmm-DD hh:mm:ss.fffffffff]</code> string where <code>mmm</code> is 3 char month name and the fractional seconds are left out when zero.</entry>
+            <entry>Input streaming operator for time duration. Uses facet to read [date time_of_day/date time_of_day]. The default is format is <code>[YYYY-mmm-DD hh:mm:ss.fffffffff/YYYY-mmm-DD hh:mm:ss.fffffffff]</code> string where <code>mmm</code> is 3 char month name and the fractional seconds are only included if non-zero.</entry>
 	  </row>
 	  <row>
            <entry><screen>[2002-Jan-01 01:25:10.000000001/ \
@@ -127,7 +127,7 @@ ptime t(time_from_string(ts))</screen></entry>

 	  <row>
 	    <entry valign="top" morerows="1"><screen>ptime from_iso_string(std::string)</screen></entry>
-	    <entry>From non delimited iso form string.</entry>
+	    <entry>From non delimited ISO 8601 form string.</entry>
 	  </row>
          <row>
 	    <entry><screen>std::string ts("20020131T235959");
@@ -136,7 +136,7 @@ ptime t(from_iso_string(ts))</screen></entry>

 	  <row>
 	    <entry valign="top" morerows="1"><screen>ptime from_iso_extended_string(std::string)</screen></entry>
-	    <entry>From delimited iso form string.</entry>
+	    <entry>From delimited ISO 8601 form string.</entry>
 	  </row>
          <row>
 	    <entry><screen>std::string ts("2020-01-31T23:59:59.123");
@@ -345,7 +345,7 @@ pt3.is_special(); // --> false</screen></entry>
 	<tbody>
          <row>
 	    <entry valign="top" morerows="1"><screen>std::string to_simple_string(ptime)</screen></entry>
-            <entry>To <code>YYYY-mmm-DD HH:MM:SS.fffffffff</code> string where <code>mmm</code> 3 char month name. Fractional seconds only included if non-zero.</entry>
+            <entry>To <code>YYYY-mmm-DD HH:MM:SS.fffffffff</code> string where <code>mmm</code> 3 char month name and the fractional seconds are only included if non-zero.</entry>
 	  </row>
 	  <row>
 	    <entry><screen>2002-Jan-01 10:00:01.123456789</screen></entry>
@@ -353,18 +353,18 @@ pt3.is_special(); // --> false</screen></entry>

 	  <row>
 	    <entry valign="top" morerows="1"><screen>std::string to_iso_string(ptime)</screen></entry>
-            <entry>Convert to form <code>YYYYMMDDTHHMMSS,fffffffff</code> where <code>T</code> is the date-time separator</entry>
+            <entry>Convert to form <code>YYYYMMDDTHHMMSS.fffffffff</code> where <code>T</code> is the date-time separator and the fractional seconds are only included if non-zero.</entry>
 	  </row>
 	  <row>
-	    <entry><screen>20020131T100001,123456789</screen></entry>
+	    <entry><screen>20020131T100001.123456789</screen></entry>
          </row>
          
          <row>
 	    <entry valign="top" morerows="1"><screen>std::string to_iso_extended_string(ptime)</screen></entry>
-            <entry>Convert to form <code>YYYY-MM-DDTHH:MM:SS,fffffffff</code> where <code>T</code> is the date-time separator</entry>
+            <entry>Convert to form <code>YYYY-MM-DDTHH:MM:SS.fffffffff</code> where <code>T</code> is the date-time separator and the fractional seconds are only included if non-zero.</entry>
 	  </row>
 	  <row>
-	    <entry><screen>2002-01-31T10:00:01,123456789</screen></entry>
+	    <entry><screen>2002-01-31T10:00:01.123456789</screen></entry>
 	  </row>
 	</tbody>
      </tgroup>
@@ -479,7 +479,7 @@ td3.is_special(); // --> false</screen></entry>
 	<tbody>
          <row>
 	    <entry valign="top" morerows="1"><screen>std::string to_simple_string(time_duration)</screen></entry>
-            <entry>To <code>HH:MM:SS.fffffffff</code> were <code>fff</code> is fractional seconds that are only included if non-zero.</entry>
+            <entry>To <code>HH:MM:SS.fffffffff</code> where <code>fffffffff</code> is fractional seconds that are only included if non-zero.</entry>
 	  </row>
 	  <row>
 	    <entry><screen>10:00:01.123456789</screen></entry>
@@ -487,10 +487,10 @@ td3.is_special(); // --> false</screen></entry>

 	  <row>
 	    <entry valign="top" morerows="1"><screen>std::string to_iso_string(time_duration)</screen></entry>
-            <entry>Convert to form <code>HHMMSS,fffffffff</code>.</entry>
+            <entry>Convert to form <code>HHMMSS.fffffffff</code> where the fractional seconds are only included if non-zero.</entry>
 	  </row>
          <row>
-	    <entry><screen>100001,123456789</screen></entry>
+	    <entry><screen>100001.123456789</screen></entry>
 	  </row>
 	</tbody>
      </tgroup>
@@ -191,7 +191,7 @@ tp.last();// --> 2002-Jan-01 09:59:59.999999999</screen>
 ptime t1(d, seconds(10)); //10 sec after midnight
 ptime t2(d, hours(10)); //10 hours after midnight
 time_period tp(t1, t2);
-tp.last(); // --> 2002-Jan-01 10:00:00</screen>
+tp.end(); // --> 2002-Jan-01 10:00:00</screen>
 	    </entry>
          </row>
          
@@ -311,7 +311,7 @@ tp2.intersects(tp1); // --> true</screen>
          <row>
            <entry valign="top" morerows="1"><screen>std::string 
  to_simple_string(time_period dp)</screen></entry>
-            <entry>To <code>[YYYY-mmm-DD hh:mm:ss.fffffffff/YYYY-mmm-DD hh:mm:ss.fffffffff]</code> string where <code>mmm</code> is 3 char month name.</entry>
+            <entry>To <code>[YYYY-mmm-DD hh:mm:ss.fffffffff/YYYY-mmm-DD hh:mm:ss.fffffffff]</code> string where <code>mmm</code> is 3 char month name and the fractional seconds are only included if non-zero.</entry>
          </row>
          <row>
            <entry><screen>[2002-Jan-01 01:25:10.000000001/
@@ -341,7 +341,7 @@ tp2.intersects(tp1); // --> true</screen>
 	<tbody>
          <row>
 	    <entry valign="top" morerows="1"><screen>operator&lt;&lt;</screen></entry>
-            <entry>Output streaming operator for time duration. Uses facet to output [date time_of_day/date time_of_day]. The default is format is <code>[YYYY-mmm-DD hh:mm:ss.fffffffff/YYYY-mmm-DD hh:mm:ss.fffffffff]</code> string where <code>mmm</code> is 3 char month name and the fractional seconds are left out when zero.</entry>
+            <entry>Output streaming operator for time duration. Uses facet to output [date time_of_day/date time_of_day]. The default is format is <code>[YYYY-mmm-DD hh:mm:ss.fffffffff/YYYY-mmm-DD hh:mm:ss.fffffffff]</code> string where <code>mmm</code> is 3 char month name and the fractional seconds are only included if non-zero.</entry>
 	  </row>
 	  <row>
            <entry><screen>[2002-Jan-01 01:25:10.000000001/ \
@@ -350,7 +350,7 @@ tp2.intersects(tp1); // --> true</screen>

 	  <row>
 	    <entry valign="top" morerows="1"><screen>operator&gt;&gt;</screen></entry>
-            <entry>Input streaming operator for time duration. Uses facet to read [date time_of_day/date time_of_day]. The default is format is <code>[YYYY-mmm-DD hh:mm:ss.fffffffff/YYYY-mmm-DD hh:mm:ss.fffffffff]</code> string where <code>mmm</code> is 3 char month name and the fractional seconds are left out when zero.</entry>
+            <entry>Input streaming operator for time duration. Uses facet to read [date time_of_day/date time_of_day]. The default is format is <code>[YYYY-mmm-DD hh:mm:ss.fffffffff/YYYY-mmm-DD hh:mm:ss.fffffffff]</code> string where <code>mmm</code> is 3 char month name and the fractional seconds are only included if non-zero.</entry>
 	  </row>
 	  <row>
            <entry><screen>[2002-Jan-01 01:25:10.000000001/ \