Fix four occorrences of a typo ("arugment") in the Javadoc comments

Avoid two C4244 warnings from MSVC
Switch boost.io to boost.org
2026-01-20 05:02:33 +00:00 · 2025-11-14 12:03:00 +01:00 · 2025-11-05 11:30:41 +01:00 · 2025-10-24 11:59:10 +02:00 · 2025-10-24 11:59:10 +02:00 · 2025-10-24 11:59:10 +02:00
25 changed files with 3151 additions and 2706 deletions
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,5 +1,6 @@
 # Copyright 2016, 2017 Peter Dimov
-# Copyright (C) 2017 - 2019 James E. King III
+# 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)

@@ -21,7 +22,7 @@

 version: 1.0.{build}-{branch}

-shallow_clone: true
+shallow_clone: false

 branches:
  only:
@@ -33,115 +34,101 @@ branches:
    - /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: address-model=64,32
-    # B2_LINK: link=shared,static
+    B2_ADDRESS_MODEL: 32,64
+    B2_LINK: shared,static
    # B2_THREADING: threading=multi,single
-    B2_VARIANT: variant=release
+    B2_VARIANT: release

  matrix:
+    - FLAVOR: Visual Studio 2022
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2022
+      B2_CXXFLAGS: -permissive-
+      B2_CXXSTD: 14,17,20
+      B2_TOOLSET: msvc-14.3
+
    - FLAVOR: Visual Studio 2019
      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-      B2_ADDRESS_MODEL: address-model=64
-      B2_CXXFLAGS: cxxflags=-permissive-
-      B2_CXXSTD: 17 # 2a
+      B2_CXXFLAGS: -permissive-
+      B2_CXXSTD: 14,17,2a
      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: 17 # 2a
+      B2_CXXFLAGS: -permissive-
+      B2_CXXSTD: 2a
      B2_TOOLSET: msvc-14.1

-    - FLAVOR: Visual Studio 2017 C++17
+    - FLAVOR: Visual Studio 2017 C++14/17
      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
-
-    - FLAVOR: Visual Studio 2017 C++14 (Default)
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      B2_ADDRESS_MODEL: address-model=64,32
+      B2_CXXSTD: 14,17
      B2_TOOLSET: msvc-14.1

    - FLAVOR: clang-cl
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      B2_ADDRESS_MODEL: address-model=64
-      B2_CXXSTD: 11
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      ADDCOMMANDS: '"C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvars64.bat"'
+      B2_ADDRESS_MODEL: 64
+      B2_CXXSTD: 11,14,17
      B2_TOOLSET: clang-win

-    - 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
+    # not supported
+    # - FLAVOR: Visual Studio 2015, 2013
+    #   APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    #   B2_TOOLSET: msvc-12.0,msvc-14.0

-    - FLAVOR: Visual Studio 2010, 2012, 2013
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      B2_TOOLSET: msvc-10.0,msvc-11.0,msvc-12.0
+    # - 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: 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_ADDRESS_MODEL: 32
+      B2_CXXSTD: 11,14,1z
      B2_TOOLSET: gcc
-      B2_VARIANT: variant=debug

    - 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_ADDRESS_MODEL: 64
+      B2_CXXSTD: 11,14,1z
      B2_TOOLSET: gcc

-    - 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
+    - FLAVOR: mingw64 (32-bit)
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      ADDPATH: C:\mingw-w64\i686-8.1.0-posix-dwarf-rt_v6-rev0\mingw32\bin;
+      B2_ADDRESS_MODEL: 32
+      B2_CXXSTD: 11,14,17,2a
+      B2_TOOLSET: gcc

    - 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
+      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: 11,14,17,2a
+      B2_TOOLSET: gcc

 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
+  - '%ADDCOMMANDS%'
+  - 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:
-  - 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)
+test_script: ci\build.bat
--- a/.azure-pipelines.yml
+++ b/.azure-pipelines.yml
@@ -1,276 +0,0 @@
-# Copyright 2015-2019 Rene Rivera.
-# Copyright 2019 Mateusz Loskot <mateusz at loskot dot net>
-# 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 Azure Pipelines 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.
-
-trigger:
-  branches:
-    include:
-    - develop
-    - master
-    - bugfix/*
-    - feature/*
-    - fix/*
-    - pr/*
-
-pr:
-  branches:
-    include:
-    - develop
-
-variables:
-  - name: B2_VARIANT
-    value: variant=release,debug
-
-stages:
-
- stage: Test
-  jobs:
-
-  - job: 'Linux'
-    pool:
-      vmImage: 'ubuntu-16.04'
-    strategy:
-      matrix:
-        GCC 8:
-          B2_TOOLSET: gcc
-          B2_CXXSTD: 14,17
-          CXX: g++-8
-          PACKAGES: g++-8
-        GCC 7:
-          B2_TOOLSET: gcc
-          B2_CXXSTD: 11,14,17
-          CXX: g++-7
-          PACKAGES: g++-7
-        GCC 6:
-          B2_TOOLSET: gcc
-          B2_CXXSTD: 11,14
-          CXX: g++-6
-          PACKAGES: g++-6
-        GCC 5:
-          B2_TOOLSET: gcc
-          B2_CXXSTD: 11
-          CXX: g++-5
-          PACKAGES: g++-5
-        GCC 4.9:
-          B2_TOOLSET: gcc
-          B2_CXXSTD: 11
-          CXX: g++-4.9
-          PACKAGES: g++-4.9
-        GCC 4.8:
-          B2_TOOLSET: gcc
-          B2_CXXSTD: 11
-          CXX: g++-4.8
-          PACKAGES: g++-4.8
-        Clang 8:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 14,17
-          CXX: clang++-8
-          PACKAGES: clang-8
-          LLVM_REPO: llvm-toolchain-xenial-8
-        Clang 7:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 14,17
-          CXX: clang++-7
-          PACKAGES: clang-7
-          LLVM_REPO: llvm-toolchain-xenial-7
-        Clang 6:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 14,17
-          CXX: clang++-6.0
-          PACKAGES: clang-6.0
-          LLVM_REPO: llvm-toolchain-xenial-6.0
-        Clang 5:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 11,14,17
-          PACKAGES: clang-5.0
-          CXX: clang++-5.0
-          LLVM_REPO: llvm-toolchain-xenial-5.0
-        Clang 4:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 11,14,17
-          CXX: clang++-4.0
-          PACKAGES: clang-4.0
-          LLVM_REPO: llvm-toolchain-xenial-4.0
-        Clang 3.9:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 11,14
-          CXX: clang++-3.9
-          PACKAGES: clang-3.9
-        Clang 3.8:
-          B2_TOOLSET: clang
-          CXX: clang++-3.8
-          B2_CXXSTD: 11,14
-          PACKAGES: clang-3.8
-        Clang 3.7:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 11
-          CXX: clang++-3.7
-          PACKAGES: clang-3.7
-        Clang 3.6:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 11
-          CXX: clang++-3.6
-          PACKAGES: clang-3.6
-        Clang 3.5:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 11
-          CXX: clang++-3.5
-          PACKAGES: clang-3.5
-    steps:
-    - bash: |
-        set -e
-        uname -a
-        sudo -E apt-add-repository -y "ppa:ubuntu-toolchain-r/test"
-        if test -n "${LLVM_REPO}" ; then
-          wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-          sudo -E apt-add-repository "deb http://apt.llvm.org/xenial/ ${LLVM_REPO} main"
-        fi
-        sudo -E apt-get update
-        sudo -E apt-get -yq --no-install-suggests --no-install-recommends install ${PACKAGES}
-
-        git clone --branch master https://github.com/boostorg/boost-ci.git boost-ci
-        cp -pr boost-ci/ci boost-ci/.codecov.yml .
-        rm -rf boost-ci
-        source ci/azure-pipelines/install.sh
-
-        # AzP requires to run special task in order to export
-        # SELF and BOOST_ROOT as job-scoped variable from a script.
-        # NOTE: Disable set -x is necessary, see the troubleshooting guide
-        # on "Variables having ' (single quote) appended":
-        # https://docs.microsoft.com/en-us/azure/devops/pipelines/troubleshooting
-        set +x
-        echo "##vso[task.setvariable variable=SELF]"$SELF
-        echo "##vso[task.setvariable variable=BOOST_ROOT]"$BOOST_ROOT
-        set -x
-      displayName: 'Install'
-    - bash: |
-        set -e
-        echo "SELF=$SELF"
-        echo "BOOST_ROOT=$BOOST_ROOT"
-
-        cd $BOOST_ROOT/libs/$SELF
-        ci/azure-pipelines/build.sh --debug-configuration
-      displayName: 'Build'
-
-  - job: 'Windows'
-    strategy:
-      matrix:
-        VS 2019 C++17 Strict:
-          B2_TOOLSET: msvc-14.2
-          B2_CXXSTD: 17
-          B2_CXXFLAGS: cxxflags=-permissive-
-          B2_ADDRESS_MODEL: address-model=64
-          VM_IMAGE: 'windows-2019'
-        VS 2017 C++17 Strict:
-          B2_TOOLSET: msvc-14.1
-          B2_CXXSTD: 17
-          B2_CXXFLAGS: cxxflags=-permissive-
-          B2_ADDRESS_MODEL: address-model=64
-          VM_IMAGE: 'vs2017-win2016'
-        VS 2017 C++17:
-          B2_TOOLSET: msvc-14.1
-          B2_CXXSTD: 17
-          B2_ADDRESS_MODEL: address-model=64,32
-          VM_IMAGE: 'vs2017-win2016'
-        VS 2017 C++14:
-          B2_TOOLSET: msvc-14.1
-          #B2_CXXSTD: 14 # default
-          B2_ADDRESS_MODEL: address-model=64,32
-          VM_IMAGE: 'vs2017-win2016'
-
-    pool:
-      vmImage: $(VM_IMAGE)
-    steps:
-    - script: |
-        set SELF=%BUILD_REPOSITORY_NAME:-=_%
-        for /f "tokens=2 delims=/" %%a in ("%SELF%") do set SELF=%%a
-        set BOOST_ROOT=%BUILD_SOURCESDIRECTORY%\boost-root
-
-        git clone --branch master https://github.com/boostorg/boost-ci.git boost-ci
-        xcopy /s /e /q /i boost-ci\ci .\ci
-        cmd /k ci\azure-pipelines\install.bat
-
-        echo ##vso[task.setvariable variable=SELF]%SELF%
-        echo ##vso[task.setvariable variable=BOOST_ROOT]%BOOST_ROOT%
-      displayName: 'Install'
-    - script: |
-        PATH=%ADDPATH%%PATH%
-        REM 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%)
-        cd %BOOST_ROOT%
-        ECHO b2 libs/%SELF:\=/% %B2_TOOLCXX% %B2_CXXFLAGS% %B2_DEFINES% %B2_THREADING% %B2_ADDRESS_MODEL% %B2_LINK% %B2_THREADING% %B2_VARIANT% -j3
-        b2 libs/%SELF:\=/% %B2_TOOLCXX% %B2_CXXFLAGS% %B2_DEFINES% %B2_THREADING% %B2_ADDRESS_MODEL% %B2_LINK% %B2_THREADING% %B2_VARIANT% -j3
-      displayName: 'Build'
-
-  - job: 'macOS'
-    pool:
-      vmImage: 'macOS-10.14'
-    strategy:
-      matrix:
-        Xcode_11_3_1:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 14,17,2a
-          XCODE_APP: /Applications/Xcode_11.3.1.app
-        Xcode_11_2_1:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 14,17,2a
-          XCODE_APP: /Applications/Xcode_11.2.1.app
-        Xcode_11_2:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 14,17,2a
-          XCODE_APP: /Applications/Xcode_11.2.app
-        Xcode_11_1:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 14,17,2a
-          XCODE_APP: /Applications/Xcode_11.1.app
-        Xcode_10_3:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 11,14,17,2a
-          XCODE_APP: /Applications/Xcode_10.3.app
-        Xcode_10_2_1:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 11,14,17,2a
-          XCODE_APP: /Applications/Xcode_10.2.1.app
-        Xcode_10_2:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 11,14,17,2a
-          XCODE_APP: /Applications/Xcode_10.2.app
-        Xcode_10_1:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 11,14,17,2a
-          XCODE_APP: /Applications/Xcode_10.1.app
-        Xcode_10_0:
-          B2_TOOLSET: clang
-          B2_CXXSTD: 11,14,17,2a
-          XCODE_APP: /Applications/Xcode_10.app
-    steps:
-    - bash: |
-        set -e
-        git clone --branch master https://github.com/boostorg/boost-ci.git boost-ci-cloned
-        cp -prf boost-ci-cloned/ci .
-        rm -rf boost-ci-cloned
-        source ci/azure-pipelines/install.sh
-      displayName: Install
-    - bash: |
-        set -e
-        echo "SELF=$SELF"
-        echo "BOOST_ROOT=$BOOST_ROOT"
-        cd $BOOST_ROOT/libs/$SELF
-        ci/azure-pipelines/build.sh
-      displayName: 'Build'
--- a/.codecov.yml
+++ b/.codecov.yml
@@ -0,0 +1,25 @@
+# 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: 1
+    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:
+  - extra/*
+  - extra/**/*
+  - test/*
+  - test/**/*
--- a/.drone.star
+++ b/.drone.star
@@ -0,0 +1,117 @@
+# Use, modification, and distribution are
+# subject to the Boost Software License, Version 1.0. (See accompanying
+# file LICENSE.txt)
+#
+# Copyright (c) 2020 Rene Rivera
+# Copyright (c) 2022 Alan de Freitas
+# Copyright (c) 2022-2025 Alexander Grund
+
+# For Drone CI we use the Starlark scripting language to reduce duplication.
+# As the yaml syntax for Drone CI is rather limited.
+
+# Base environment for all jobs
+globalenv={'B2_VARIANT': 'release'}
+
+# Wrapper function to apply the globalenv to all jobs
+def job(
+        # job specific environment options
+        env={},
+        **kwargs):
+  real_env = dict(globalenv)
+  real_env.update(env)
+  return job_impl(env=real_env, **kwargs)
+
+def main(ctx):
+  return [
+    job(compiler='clang-3.8', cxxstd='11,14',          os='ubuntu-16.04'),
+    job(compiler='clang-3.9', cxxstd='11,14',          os='ubuntu-18.04'),
+    job(compiler='clang-4.0', cxxstd='11,14',          os='ubuntu-18.04'),
+    job(compiler='clang-5.0', cxxstd='11,14,1z',       os='ubuntu-18.04'),
+    job(compiler='clang-6.0', cxxstd='11,14,17',       os='ubuntu-18.04'),
+    job(compiler='clang-7',   cxxstd='11,14,17',       os='ubuntu-18.04'),
+    job(compiler='clang-8',   cxxstd='11,14,17,2a',    os='ubuntu-18.04'),
+    job(compiler='clang-9',   cxxstd='11,14,17,2a',    os='ubuntu-18.04'),
+    job(compiler='clang-10',  cxxstd='11,14,17,2a',    os='ubuntu-18.04'),
+    job(compiler='clang-11',  cxxstd='11,14,17,2a',    os='ubuntu-22.04'),
+    job(compiler='clang-12',  cxxstd='11,14,17,20',    os='ubuntu-22.04'),
+    job(compiler='clang-13',  cxxstd='11,14,17,20,2b', os='ubuntu-22.04'),
+    job(compiler='clang-14',  cxxstd='11,14,17,20,2b', os='ubuntu-22.04'),
+    job(compiler='clang-15',  cxxstd='11,14,17,20,2b', os='ubuntu-22.04', add_llvm=True,
+        env={'B2_CXXFLAGS': '-Werror'}),
+    job(name='Clang 15 standalone', compiler='clang-15',  cxxstd='17,20,2b', os='ubuntu-22.04', add_llvm=True,
+        env={'B2_CXXFLAGS': '-Werror', 'B2_DEFINES': 'BOOST_STATIC_STRING_STANDALONE'}),
+
+    job(compiler='gcc-4.8',   cxxstd='11',             os='ubuntu-16.04'),
+    job(compiler='gcc-4.9',   cxxstd='11',             os='ubuntu-16.04'),
+    job(compiler='gcc-5',     cxxstd='11,14,1z',       os='ubuntu-18.04'),
+    job(compiler='gcc-6',     cxxstd='11,14,1z',       os='ubuntu-18.04'),
+    job(compiler='gcc-7',     cxxstd='11,14,1z',       os='ubuntu-18.04'),
+    job(compiler='gcc-8',     cxxstd='11,14,17,2a',    os='ubuntu-18.04'),
+    job(compiler='gcc-9',     cxxstd='11,14,17,2a',    os='ubuntu-18.04'),
+    job(compiler='gcc-10',    cxxstd='11,14,17,20',    os='ubuntu-22.04'),
+    job(compiler='gcc-11',    cxxstd='11,14,17,20,2b', os='ubuntu-22.04'),
+    job(compiler='gcc-12',    cxxstd='11,14,17,20,2b', os='ubuntu-22.04'),
+
+    job(name='Coverage', buildtype='codecov', buildscript='codecov_coveralls', env={'LCOV_BRANCH_COVERAGE': 1, "COVERALLS_REPO_TOKEN": {"from_secret": "coveralls_repo_token"}},
+        compiler='gcc-8',     cxxstd='11,14,17,2a',    os='ubuntu-18.04'),
+    # Sanitizers
+    job(name='ASAN',  asan=True,
+        compiler='gcc-12',    cxxstd='11,14,17,20',    os='ubuntu-22.04'),
+    job(name='UBSAN', ubsan=True,
+        compiler='gcc-12',    cxxstd='11,14,17,20',    os='ubuntu-22.04'),
+    job(name='TSAN',  tsan=True,
+        compiler='gcc-12',    cxxstd='11,14,17,20',    os='ubuntu-22.04'),
+    job(name='Clang 14 w/ sanitizers', asan=True, ubsan=True,
+        compiler='clang-14',  cxxstd='11,14,17,20',    os='ubuntu-22.04'),
+    job(name='Clang 11 libc++ w/ sanitizers', asan=True, ubsan=True, # libc++-11 is the latest working with ASAN: https://github.com/llvm/llvm-project/issues/59432
+        compiler='clang-11',  cxxstd='11,14,17,20',    os='ubuntu-20.04', stdlib='libc++', install='libc++-11-dev libc++abi-11-dev'),
+    job(name='Valgrind', valgrind=True,
+        compiler='clang-6.0', cxxstd='11,14,1z',       os='ubuntu-18.04', install='libc6-dbg libc++-dev libstdc++-8-dev'),
+
+    # libc++
+    job(compiler='clang-6.0', cxxstd='11,14,17,2a',    os='ubuntu-18.04', stdlib='libc++', install='libc++-dev libc++abi-dev'),
+    job(compiler='clang-7',   cxxstd='11,14,17,2a',    os='ubuntu-20.04', stdlib='libc++', install='libc++-7-dev libc++abi-7-dev'),
+    job(compiler='clang-8',   cxxstd='11,14,17,2a',    os='ubuntu-20.04', stdlib='libc++', install='libc++-8-dev libc++abi-8-dev'),
+    job(compiler='clang-9',   cxxstd='11,14,17,2a',    os='ubuntu-20.04', stdlib='libc++', install='libc++-9-dev libc++abi-9-dev'),
+    job(compiler='clang-10',  cxxstd='11,14,17,20',    os='ubuntu-20.04', stdlib='libc++', install='libc++-10-dev libc++abi-10-dev'),
+    job(compiler='clang-11',  cxxstd='11,14,17,20',    os='ubuntu-20.04', stdlib='libc++', install='libc++-11-dev libc++abi-11-dev'),
+    job(compiler='clang-12',  cxxstd='11,14,17,20',    os='ubuntu-22.04', stdlib='libc++', install='libc++-12-dev libc++abi-12-dev libunwind-12-dev'),
+    job(compiler='clang-13',  cxxstd='11,14,17,20',    os='ubuntu-22.04', stdlib='libc++', install='libc++-13-dev libc++abi-13-dev'),
+    job(compiler='clang-14',  cxxstd='11,14,17,20',    os='ubuntu-22.04', stdlib='libc++', install='libc++-14-dev libc++abi-14-dev'),
+    job(compiler='clang-15',  cxxstd='11,14,17,20',    os='ubuntu-22.04', stdlib='libc++', install='libc++-15-dev libc++abi-15-dev', add_llvm=True),
+
+    # FreeBSD
+    job(compiler='clang-10',  cxxstd='11,14,17,20',    os='freebsd-13.1'),
+    job(compiler='clang-15',  cxxstd='11,14,17,20',    os='freebsd-13.1'),
+    job(compiler='gcc-11',    cxxstd='11,14,17,20',    os='freebsd-13.1', linkflags='-Wl,-rpath=/usr/local/lib/gcc11'),
+    # OSX
+    job(compiler='clang',     cxxstd='11,14,17,2a',    os='osx-xcode-10.1'),
+    job(compiler='clang',     cxxstd='11,14,17,2a',    os='osx-xcode-10.3'),
+    job(compiler='clang',     cxxstd='11,14,17,2a',    os='osx-xcode-11.1'),
+    job(compiler='clang',     cxxstd='11,14,17,2a',    os='osx-xcode-11.7'),
+    job(compiler='clang',     cxxstd='11,14,17,2a',    os='osx-xcode-12'),
+    job(compiler='clang',     cxxstd='11,14,17,20',    os='osx-xcode-12.5.1'),
+    job(compiler='clang',     cxxstd='11,14,17,20',    os='osx-xcode-13.0'),
+    job(compiler='clang',     cxxstd='11,14,17,20',    os='osx-xcode-13.4.1'),
+    job(compiler='clang',     cxxstd='11,14,17,20,2b', os='osx-xcode-14.0'),
+    job(compiler='clang',     cxxstd='11,14,17,20,2b', os='osx-xcode-14.3.1'),
+    job(compiler='clang',     cxxstd='11,14,17,20,2b', os='osx-xcode-15.0.1'),
+    # ARM64
+    job(compiler='clang-12',  cxxstd='11,14,17,20',    os='ubuntu-20.04', arch='arm64', add_llvm=True),
+    job(compiler='gcc-11',    cxxstd='11,14,17,20',    os='ubuntu-20.04', arch='arm64'),
+    # S390x
+    job(compiler='clang-12',  cxxstd='11,14,17,20',    os='ubuntu-20.04', arch='s390x', add_llvm=True),
+    job(compiler='gcc-11',    cxxstd='11,14,17,20',    os='ubuntu-20.04', arch='s390x'),
+    # Windows
+    job(compiler='msvc-14.0', cxxstd=None,              os='windows', env={'B2_DONT_EMBED_MANIFEST': 1}),
+    job(compiler='msvc-14.1', cxxstd=None,              os='windows'),
+    job(compiler='msvc-14.2', cxxstd=None,              os='windows'),
+    job(compiler='msvc-14.3', cxxstd=None,              os='windows'),
+    job(compiler='msvc-14.0', cxxstd='14,17,20',        os='windows', env={'B2_DONT_EMBED_MANIFEST': 1}),
+    job(compiler='msvc-14.1', cxxstd='14,17,20',        os='windows'),
+    job(compiler='msvc-14.2', cxxstd='14,17,20',        os='windows'),
+    job(compiler='msvc-14.3', cxxstd='14,17,20,latest', os='windows'),
+  ]
+
+# from https://github.com/boostorg/boost-ci
+load("@boost_ci//ci/drone/:functions.star", "linux_cxx", "windows_cxx", "osx_cxx", "freebsd_cxx", "job_impl")
--- a/.drone/codecov_coveralls.sh
+++ b/.drone/codecov_coveralls.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+# Copyright 2020 Rene Rivera, Sam Darwin
+# Copyright 2025 Alexander Grund
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE.txt or copy at http://boost.org/LICENSE_1_0.txt)
+
+
+set -xe
+
+# Run the regular Boost CI script which does the test & upload to codecov.io
+wget https://github.com/boostorg/boost-ci/raw/refs/heads/master/.drone/drone.sh
+. drone.sh
+
+# coveralls
+# uses multiple lcov steps from boost-ci codecov.sh script
+if [ -n "${COVERALLS_REPO_TOKEN}" ]; then
+    echo "processing coveralls"
+    pip3 install --user cpp-coveralls
+    cd "$BOOST_CI_SRC_FOLDER"
+
+    export PATH=/tmp/lcov/bin:$PATH
+    command -v lcov
+    lcov --version
+
+    lcov --remove coverage.info -o coverage_filtered.info '*/test/*' '*/extra/*'
+    cpp-coveralls --verbose -l coverage_filtered.info
+fi
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,50 @@
+#
+# Copyright 2020-2021 Peter Dimov
+# Copyright 2021 Andrey Semashev
+# Copyright 2021-2025 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: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+      - develop
+      - bugfix/**
+      - feature/**
+      - fix/**
+      - github/**
+      - 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:
+      exclude_cxxstd: '98,03,0x'
+      enable_pr_coverage: false
+      enable_multiarch: false
+    # Example of customization:
+    # with:
+    #   enable_reflection: true
+    #   enable_windows: false
+    # secrets:
+    #   CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+    #   COVERITY_SCAN_NOTIFICATION_EMAIL: ${{ secrets.COVERITY_SCAN_NOTIFICATION_EMAIL }}
+    #   COVERITY_SCAN_TOKEN: ${{ secrets.COVERITY_SCAN_TOKEN }}
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,275 +0,0 @@
-# Copyright 2016 Peter Dimov
-# Copyright 2017 - 2019 James E. King III
-# Copyright 2020 Krystian Stasiowski
-# 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. If you want to enable a big-endian build, you need to uncomment the
-#    big-endian build job.
-# 5. 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
-      - qemu-user-static
-
-services:
-  - docker
-
-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:
-    - env:
-      - COPY="all the environment settings from your job"
-
-  include:
-    # coverage
-    - os: linux
-      env:
-        - COMMENT=codecov.io
-        - B2_CXXSTD=11
-        - B2_TOOLSET=gcc-8
-        - B2_DEFINES="define=BOOST_NO_STRESS_TEST=1"
-      addons: *gcc-8
-      script:
-        - cd $BOOST_ROOT/libs/$SELF
-        - tools/codecov.sh
-
-    - os: linux
-      env:
-        - COMMENT=asan
-        - B2_VARIANT=variant=debug
-        - B2_TOOLSET=gcc-8
-        - B2_CXXSTD=11,14
-        - B2_CXXFLAGS="address-sanitizer=norecover"
-        - B2_DEFINES="define=BOOST_NO_STRESS_TEST=1"
-      addons: *gcc-8
-
-    - os: linux
-      env:
-        - COMMENT=tsan
-        - B2_VARIANT=variant=debug
-        - B2_TOOLSET=gcc-8
-        - B2_CXXSTD=11,14
-        - B2_CXXFLAGS="thread-sanitizer=norecover"
-        - B2_DEFINES="define=BOOST_NO_STRESS_TEST=1"
-      addons: *gcc-8
-
-    - os: linux
-      env:
-        - COMMENT=ubsan
-        - B2_VARIANT=variant=debug
-        - B2_TOOLSET=gcc-8
-        - B2_CXXSTD=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
-      addons: *gcc-8
-
-    - os: linux
-      env:
-        - COMMENT=valgrind
-        - B2_TOOLSET=clang-6.0
-        - B2_CXXSTD=11,14
-        - B2_DEFINES="define=BOOST_NO_STRESS_TEST=1"
-        - B2_VARIANT=variant=debug
-        - B2_TESTFLAGS=testing.launcher=valgrind
-        - VALGRIND_OPTS=--error-exitcode=1
-      addons: *clang-6
-      script:
-        - cd $BOOST_ROOT/libs/$SELF
-        - ci/travis/valgrind.sh
-
-    # libstdc++
-    - { os: "linux", dist: "trusty",  # xenial has libstdc++ from gcc 5.4.0 with newer ABI
-                     env: [ "B2_TOOLSET=gcc-4.8",     "B2_CXXSTD=11"      ], 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=11"       ], addons: *gcc-49    }
-    - { os: "linux", env: [ "B2_TOOLSET=gcc-5",       "B2_CXXSTD=11,14"       ], addons: *gcc-5     }
-    - { os: "linux", env: [ "B2_TOOLSET=gcc-6",       "B2_CXXSTD=11,14"    ], addons: *gcc-6     }
-    - { os: "linux", env: [ "B2_TOOLSET=gcc-7",       "B2_CXXSTD=14,17"    ], addons: *gcc-7     }
-    - { os: "linux", env: [ "B2_TOOLSET=gcc-8",       "B2_CXXSTD=17"    ], addons: *gcc-8     }
-    - { os: "linux", env: [ "B2_TOOLSET=gcc-9",       "B2_CXXSTD=17"    ], 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=11"       ], addons: *clang-38  }
-    - { os: "linux", env: [ "B2_TOOLSET=clang-4.0",   "B2_CXXSTD=11,14"    ], addons: *clang-4   }
-    - { os: "linux", env: [ "B2_TOOLSET=clang-5.0",   "B2_CXXSTD=11,14"    ], addons: *clang-5   }
-    - { os: "linux", env: [ "B2_TOOLSET=clang-6.0",   "B2_CXXSTD=14,17"    ], addons: *clang-6   }
-    - { os: "linux", env: [ "B2_TOOLSET=clang-7",     "B2_CXXSTD=17"    ], addons: *clang-7   }
-    - { os: "linux", env: [ "B2_TOOLSET=clang-8",     "B2_CXXSTD=17"    ], addons: *clang-8   }
-    
-    -   os: "linux"
-        env: ["B2_TOOLSET=clang-9", "B2_CXXSTD=11,14,17"]
-        addons:
-          apt:
-            sources:
-              - ubuntu-toolchain-r-test
-              - sourceline: 'deb https://apt.llvm.org/xenial/ llvm-toolchain-xenial-9 main'
-                key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
-            packages:
-              - clang-9
-              - libc6-dbg
-              - libc++-dev
-              - libstdc++-8-dev          
-    
-    # libc++
-    - { os: "linux", env: [ "B2_TOOLSET=clang-6.0",   "B2_CXXSTD=11,14",
-                            "B2_CXXFLAGS=-stdlib=libc++"                   ], addons: *clang-6   }
-    - { os: "osx"  , env: [ "B2_TOOLSET=clang",       "B2_CXXSTD=11,17"    ]                     }
-
-    # to enable Intel ICC define INTEL_ICC_SERIAL_NUMBER and the following (under development):
-    # - { 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                               }
-
-    # uncomment to enable a big-endian build job, just note that it is 5-10 times slower
-    # than a regular build and travis has a 50 minute time limit per job
-    # - os: linux
-    #   env:
-    #     - COMMENT=big-endian
-    #     - B2_CXXSTD=03
-    #     - B2_TOOLSET=gcc
-    #     - B2_DEFINES="define=BOOST_NO_STRESS_TEST=1"
-    #     - BDDE_OS=red
-    #     - BDDE_ARCH=ppc64
-    #   script:
-    #     - cd $BOOST_ROOT/libs/$SELF
-    #     - ci/travis/bdde.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
-      script:
-        - cd $BOOST_ROOT/libs/$SELF
-        - ci/travis/coverity.sh
-        
-    # Standalone tests for StaticString
-    - { os: "linux", env: [ "COMMENT=STANDALONE",       "B2_TOOLSET=gcc-7",       "B2_DEFINES=define=BOOST_STATIC_STRING_STANDALONE",       "B2_CXXSTD=17"                                        ], addons: *gcc-7     }
-    - { os: "linux", env: [ "COMMENT=STANDALONE",       "B2_TOOLSET=gcc-8",       "B2_DEFINES=define=BOOST_STATIC_STRING_STANDALONE",       "B2_CXXSTD=17"                                        ], addons: *gcc-8     }
-    - { os: "linux", env: [ "COMMENT=STANDALONE",       "B2_TOOLSET=gcc-9",       "B2_DEFINES=define=BOOST_STATIC_STRING_STANDALONE",       "B2_CXXSTD=17"                                        ], addons: *gcc-9     }
-    - { os: "linux", env: [ "COMMENT=STANDALONE",       "B2_TOOLSET=clang-6.0",   "B2_DEFINES=define=BOOST_STATIC_STRING_STANDALONE",       "B2_CXXSTD=17"                                        ], addons: *clang-6   }
-    - { os: "linux", env: [ "COMMENT=STANDALONE",       "B2_TOOLSET=clang-7",     "B2_DEFINES=define=BOOST_STATIC_STRING_STANDALONE",       "B2_CXXSTD=17"                                        ], addons: *clang-7   }
-    - { os: "linux", env: [ "COMMENT=STANDALONE",       "B2_TOOLSET=clang-8",     "B2_DEFINES=define=BOOST_STATIC_STRING_STANDALONE",       "B2_CXXSTD=17"                                        ], addons: *clang-8   }
-    -   os: "linux"
-        env: ["COMMENT=STANDALONE", "B2_TOOLSET=clang-9", "B2_DEFINES=define=BOOST_STATIC_STRING_STANDALONE", "B2_CXXSTD=17"]
-        addons:
-          apt:
-            sources:
-              - ubuntu-toolchain-r-test
-              - sourceline: 'deb https://apt.llvm.org/xenial/ llvm-toolchain-xenial-9 main'
-                key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
-            packages:
-              - clang-9
-              - libc6-dbg
-              - libc++-dev
-              - libstdc++-8-dev
-          
-    - { os: "osx"  , env: [ "COMMENT=STANDALONE",       "B2_TOOLSET=clang",       "B2_DEFINES=define=BOOST_STATIC_STRING_STANDALONE",       "B2_CXXSTD=17"     ]                     }
-  
-notifications:
-  email:
-    false
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2016-2017 Vinnie Falco (vinnie dot falco at gmail dot com)
+# Copyright (c) 2022 Alan de Freitas (alandefreitas@gmail.com)
 #
 # 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)
@@ -7,146 +7,111 @@
 # Official repository: https://github.com/boostorg/static_string
 #

-cmake_minimum_required (VERSION 3.5.1)
+cmake_minimum_required(VERSION 3.8...3.16)

-if (POLICY CMP0074)
-    cmake_policy (SET CMP0074 NEW)
-endif()
+project(boost_static_string VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)

-#-------------------------------------------------------------------------------
+set(BOOST_STATIC_STRING_IS_ROOT OFF)
+if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+    set(BOOST_STATIC_STRING_IS_ROOT ON)
+endif ()

-function (DoGroupSources curdir rootdir folder)
-    file (GLOB children RELATIVE ${PROJECT_SOURCE_DIR}/${curdir} ${PROJECT_SOURCE_DIR}/${curdir}/*)
-    foreach (child ${children})
-        if (IS_DIRECTORY ${PROJECT_SOURCE_DIR}/${curdir}/${child})
-            DoGroupSources (${curdir}/${child} ${rootdir} ${folder})
-        elseif (${child} STREQUAL "CMakeLists.txt")
-            source_group("" FILES ${PROJECT_SOURCE_DIR}/${curdir}/${child})
-        else()
-            string (REGEX REPLACE ^${rootdir} ${folder} groupname ${curdir})
-            string (REPLACE "/" "\\" groupname ${groupname})
-            source_group (${groupname} FILES ${PROJECT_SOURCE_DIR}/${curdir}/${child})
-        endif()
-    endforeach()
-endfunction()
+if (BOOST_STATIC_STRING_IS_ROOT)
+    include(CTest)
+endif ()

-function (GroupSources curdir folder)
-    DoGroupSources (${curdir} ${curdir} ${folder})
-endfunction()
+# Options
+if (NOT BOOST_SUPERPROJECT_VERSION)
+    option(BOOST_STATIC_STRING_INSTALL "Install boost::static_string files" ${BOOST_STATIC_STRING_IS_ROOT})
+    option(BOOST_STATIC_STRING_BUILD_TESTS "Build boost::static_string tests" OFF)
+else ()
+    set(BOOST_STATIC_STRING_BUILD_TESTS ${BUILD_TESTING})
+endif ()

-#-------------------------------------------------------------------------------
-#
-# StaticString
-#
-#-------------------------------------------------------------------------------
+# Find boost
+if (BOOST_SUPERPROJECT_VERSION)
+    set(BOOST_STATIC_STRING_FIND_PACKAGE_BOOST OFF)
+elseif (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/../../CMakeLists.txt" AND
+        EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/../../Jamroot" AND
+        EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/../../boost-build.jam" AND
+        EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/../../bootstrap.sh" AND
+        EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/../../libs")
+    set(BOOST_STATIC_STRING_FIND_PACKAGE_BOOST OFF)
+else ()
+    set(BOOST_STATIC_STRING_FIND_PACKAGE_BOOST ON)
+endif ()

-project (StaticString VERSION 1)
+if (BOOST_STATIC_STRING_FIND_PACKAGE_BOOST)
+    find_package(Boost 1.78.0 REQUIRED COMPONENTS container)
+elseif (BOOST_STATIC_STRING_IS_ROOT)
+    set(BOOST_STATIC_STRING_UNIT_TEST_LIBRARIES core)
+    set(BOOST_INCLUDE_LIBRARIES static_string assert container_hash throw_exception utility ${BOOST_STATIC_STRING_UNIT_TEST_LIBRARIES})
+    set(BOOST_EXCLUDE_LIBRARIES static_string)
+    set(CMAKE_FOLDER Dependencies)
+    add_subdirectory(../.. Dependencies/boost EXCLUDE_FROM_ALL)
+    unset(CMAKE_FOLDER)
+endif ()

-set_property (GLOBAL PROPERTY USE_FOLDERS ON)
-
-if (MSVC)
-    set (CMAKE_VERBOSE_MAKEFILE FALSE)
-
-    add_definitions (
-        -D_WIN32_WINNT=0x0601
-    )
-
-    add_compile_options(
-        /permissive-  # strict C++
-        /W4           # enable all warnings
-        /MP           # Multi-processor compilation
+# Sources
+include(GNUInstallDirs)
+file(GLOB_RECURSE BOOST_STATIC_STRING_HEADERS CONFIGURE_DEPENDS
+        include/boost/*.hpp
+        include/boost/*.ipp
+        include/boost/*.natvis
        )

-    set (Boost_USE_STATIC_LIBS ON)
-    set (Boost_USE_STATIC_RUNTIME ON)
+set_property(GLOBAL PROPERTY USE_FOLDERS ON)
+source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR}/include/boost PREFIX "" FILES ${BOOST_STATIC_STRING_HEADERS})
+source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR}/src PREFIX "" FILES ${BOOST_STATIC_STRING_SOURCES})

-    set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /MTd")
-    set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Ob2 /Oi /Ot /GL /MT")
-    set (CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} /Oi /Ot /MT")
+# Target
+add_library(boost_static_string INTERFACE)
+add_library(Boost::static_string ALIAS boost_static_string)

-    set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /SAFESEH:NO")
-    set (CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG")
+target_compile_features(boost_static_string INTERFACE cxx_constexpr)
+if (BOOST_SUPERPROJECT_VERSION)
+    target_include_directories(boost_static_string INTERFACE "${PROJECT_SOURCE_DIR}/include")
+else ()
+    target_include_directories(boost_static_string
+            INTERFACE
+            "$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>"
+            "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
+            )
+endif ()

-    # for RelWithDebInfo builds, disable incremental linking
-    # since CMake sets it ON by default for that build type and it
-    # causes warnings
-    #
-    string (REPLACE "/INCREMENTAL" "/INCREMENTAL:NO" replacement_flags
-        ${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO})
-    set (CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO ${replacement_flags})
+if (BOOST_STATIC_STRING_FIND_PACKAGE_BOOST)
+    target_link_libraries(boost_static_string
+            INTERFACE
+            Boost::headers
+            )
+else ()
+    target_link_libraries(boost_static_string
+            INTERFACE
+            Boost::assert
+            Boost::container_hash
+            Boost::core
+            Boost::throw_exception
+            Boost::utility
+            )
+endif ()

-else()
-    set (THREADS_PREFER_PTHREAD_FLAG ON)
-    find_package (Threads)
+if (BOOST_STATIC_STRING_INSTALL AND NOT BOOST_SUPERPROJECT_VERSION)
+    install(TARGETS boost_static_string
+            RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
+            LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+            ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+            )

-    set( CMAKE_CXX_FLAGS
-      "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -Wextra -Wpedantic -Wno-unused-parameter")
+    install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/boost
+            DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+            FILES_MATCHING
+            PATTERN "*.hpp"
+            PATTERN "*.ipp"
+            )
+endif ()

-    if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
-        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wrange-loop-analysis")
-    endif ()
-endif()

-# Must come before Boost includes, otherwise the
-# IDE sees the wrong file due to boost/ symlinks.
-include_directories (include)
+if (BUILD_TESTING OR BOOST_STATIC_STRING_BUILD_TESTS)
+    add_subdirectory(test)
+endif ()

-#-------------------------------------------------------------------------------
-#
-# Boost
-#
-#-------------------------------------------------------------------------------
-
-get_filename_component (BOOST_ROOT ../../ ABSOLUTE)
-
-# VFALCO I want static but "b2 stage" builds a minimal set which excludes static
-add_definitions (-DBOOST_ALL_STATIC_LINK=1)
-
-include_directories (${BOOST_ROOT})
-
-link_directories(${BOOST_ROOT}/stage/lib)
-
-#-------------------------------------------------------------------------------
-
-if ("${VARIANT}" STREQUAL "coverage")
-    if (MSVC)
-    else()
-        set (CMAKE_BUILD_TYPE DEBUG)
-        set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse4.2 --coverage")
-        set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} --coverage")
-    endif()
-
-elseif ("${VARIANT}" STREQUAL "ubasan")
-    if (MSVC)
-    else()
-        set (CMAKE_BUILD_TYPE RELWITHDEBINFO)
-        set (CMAKE_CXX_FLAGS
-          "${CMAKE_CXX_FLAGS} -msse4.2 -funsigned-char -fno-omit-frame-pointer -fsanitize=address,undefined -fno-sanitize-recover=address,undefined -fsanitize-blacklist=${PROJECT_SOURCE_DIR}/tools/blacklist.supp")
-        set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=address,undefined -fno-sanitize-recover=address,undefined")
-    endif()
-
-elseif ("${VARIANT}" STREQUAL "debug")
-    set (CMAKE_BUILD_TYPE DEBUG)
-
-elseif ("${VARIANT}" STREQUAL "release")
-    set (CMAKE_BUILD_TYPE RELEASE)
-
-endif()
-
-#-------------------------------------------------------------------------------
-
-#GroupSources (test "/")
-
-#-------------------------------------------------------------------------------
-#
-# Tests and examples
-#
-
-#include_directories (.)
-
-file (GLOB_RECURSE PROJECT_FILES
-    ${PROJECT_SOURCE_DIR}/include/boost/static_string/*.hpp
-    ${PROJECT_SOURCE_DIR}/include/boost/static_string/*.ipp
-)
-
-add_subdirectory (test)
--- a/10
+++ b/10
@@ -1,10 +0,0 @@
-#
-# Copyright (c) 2019 Vinnie Falco (vinnie dot falco at gmail dot com)
-#
-# 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)
-#
-# Official repository: https://github.com/boostorg/static_string
-#
-
-build-project test ;
--- a/README.md
+++ b/README.md
@@ -1,9 +1,9 @@
 # Boost.StaticString

-Branch          | Travis | Appveyor | Azure Pipelines | codecov.io | Docs | Matrix |
+Branch          | GHA CI | Appveyor | Azure Pipelines | codecov.io | Docs | Matrix |
 :-------------: | ------ | -------- | --------------- | ---------- | ---- | ------ |
-[`master`](https://github.com/boostorg/static_string/tree/master) | [![Build Status](https://travis-ci.org/boostorg/static_string.svg?branch=master)](https://travis-ci.org/boostorg/static_string) | [![Build status](https://ci.appveyor.com/api/projects/status/64es4wg4w7mc5wn2/branch/master?svg=true)](https://ci.appveyor.com/project/sdkrystian/static-string/branch/master) | [![Build Status](https://krystiands.visualstudio.com/static_string/_apis/build/status/Boost.StaticString?branchName=master)](https://krystiands.visualstudio.com/static_string/_build/latest?definitionId=3&branchName=master) | [![codecov](https://codecov.io/gh/boostorg/static_string/branch/master/graph/badge.svg)](https://codecov.io/gh/boostorg/static_string/branch/master) | [![Documentation](https://img.shields.io/badge/docs-master-brightgreen.svg)](http://www.boost.org/doc/libs/release/libs/static_string) | [![Matrix](https://img.shields.io/badge/matrix-master-brightgreen.svg)](http://www.boost.org/development/tests/master/developer/static_string.html)
-[`develop`](https://github.com/boostorg/static_string/tree/develop) | [![Build Status](https://travis-ci.org/boostorg/static_string.svg?branch=develop)](https://travis-ci.org/boostorg/static_string) | [![Build status](https://ci.appveyor.com/api/projects/status/64es4wg4w7mc5wn2/branch/develop?svg=true)](https://ci.appveyor.com/project/sdkrystian/static-string/branch/develop) | [![Build Status](https://krystiands.visualstudio.com/static_string/_apis/build/status/Boost.StaticString?branchName=develop)](https://krystiands.visualstudio.com/static_string/_build/latest?definitionId=3&branchName=develop) | [![codecov](https://codecov.io/gh/boostorg/static_string/branch/develop/graph/badge.svg)](https://codecov.io/gh/boostorg/static_string/branch/develop) | [![Documentation](https://img.shields.io/badge/docs-develop-brightgreen.svg)](http://www.boost.org/doc/libs/develop/libs/static_string) | [![Matrix](https://img.shields.io/badge/matrix-develop-brightgreen.svg)](http://www.boost.org/development/tests/develop/developer/static_string.html)
+[`master`](https://github.com/boostorg/static_string/tree/master) | [![Build Status](https://github.com/boostorg/static_string/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/boostorg/static_string/actions?query=branch:master) | [![Build status](https://ci.appveyor.com/api/projects/status/64es4wg4w7mc5wn2/branch/master?svg=true)](https://ci.appveyor.com/project/sdkrystian/static-string/branch/master) | [![Build Status](https://krystiands.visualstudio.com/static_string/_apis/build/status/Boost.StaticString?branchName=master)](https://krystiands.visualstudio.com/static_string/_build/latest?definitionId=3&branchName=master) | [![codecov](https://codecov.io/gh/boostorg/static_string/branch/master/graph/badge.svg)](https://codecov.io/gh/boostorg/static_string/branch/master) | [![Documentation](https://img.shields.io/badge/docs-master-brightgreen.svg)](http://www.boost.org/doc/libs/release/libs/static_string) | [![Matrix](https://img.shields.io/badge/matrix-master-brightgreen.svg)](https://regression.boost.org/master/developer/static_string.html)
+[`develop`](https://github.com/boostorg/static_string/tree/develop) | [![Build Status](https://github.com/boostorg/static_string/actions/workflows/ci.yml/badge.svg?branch=develop)](https://github.com/boostorg/static_string/actions?query=branch:develop) | [![Build status](https://ci.appveyor.com/api/projects/status/64es4wg4w7mc5wn2/branch/develop?svg=true)](https://ci.appveyor.com/project/sdkrystian/static-string/branch/develop) | [![Build Status](https://krystiands.visualstudio.com/static_string/_apis/build/status/Boost.StaticString?branchName=develop)](https://krystiands.visualstudio.com/static_string/_build/latest?definitionId=3&branchName=develop) | [![codecov](https://codecov.io/gh/boostorg/static_string/branch/develop/graph/badge.svg)](https://codecov.io/gh/boostorg/static_string/branch/develop) | [![Documentation](https://img.shields.io/badge/docs-develop-brightgreen.svg)](http://www.boost.org/doc/libs/develop/libs/static_string) | [![Matrix](https://img.shields.io/badge/matrix-develop-brightgreen.svg)](https://regression.boost.org/develop/developer/static_string.html)

 ## Introduction

--- a/build.jam
+++ b/build.jam
@@ -0,0 +1,27 @@
+# Copyright René Ferdinand Rivera Morell 2023-2024
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+
+require-b2 5.2 ;
+
+constant boost_dependencies :
+    /boost/assert//boost_assert
+    /boost/config//boost_config
+    /boost/container_hash//boost_container_hash
+    /boost/core//boost_core
+    /boost/throw_exception//boost_throw_exception
+    /boost/utility//boost_utility ;
+
+project /boost/static_string
+    ;
+
+explicit
+    [ alias boost_static_string : : :
+        : <include>include <library>$(boost_dependencies) ]
+    [ alias all : boost_static_string test ]
+    ;
+
+call-if : boost-library static_string
+    ;
+
--- a/doc/Jamfile
+++ b/doc/Jamfile
@@ -1,6 +1,7 @@
 #
 # Copyright (c) 2013-2017 Vinnie Falco (vinnie dot falco at gmail dot com)
 # Copyright (c) 2020 Krystian Stasiowski (sdkrystian at gmail dot com)
+# Copyright (c) 2022 Alan de Freitas (alandefreitas@gmail.com)
 #
 # 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)
@@ -8,245 +9,50 @@

 project static_string/doc ;

-import os ;
+import-search /boost/docca ;
+
+import docca ;
 import path ;
-import boostbook ;
-import quickbook ;
-import xsltproc ;
-import doxygen ;
-import modules ;
-import saxonhe ;
-import common ;
+import os ;

-#-------------------------------------------------------------------------------
-#
-# Build the list of header files that Doxygen will scan. We need
-# this list to inform the build system of the dependencies so the
-# docs can be rebuild if any of the header files change.
-#
+local include-prefix = [ path.root $(__file__:D) [ path.pwd ] ] ;
+include-prefix = [ path.native $(include-prefix:D)/include ] ;

-local sources = [ path.glob-tree ../include/boost/static_string : *.hpp *.ipp : detail impl ] ;
-
-# Get the configured paths to doxygen and xsltproc
-
-.doxygen = [ doxygen.name ] ;
-.doxygen ?= doxygen ;
-
-#ECHO Using doxygen from "$(.doxygen)" ;
-
-.xsltproc = [ xsltproc.name ] ;
-.xsltproc ?= xsltproc ;
-
-#ECHO Using xsltproc from "$(.xsltproc)" ;
-
-#-------------------------------------------------------------------------------
-#
-# Invoke Doxygen to process the header files and produce the XML
-# containing the description of the C++ declarations and extracted
-# Javadoc comments.
-#
-make index.xml
+docca.pyreference reference.qbk
    :
-        ./source.dox
+        [ glob-tree-ex ../include/boost/static_string : *.hpp *.ipp : detail impl ]
+        externals.hpp
    :
-        @make_doxygen_xml
-    :
-        <dependency>$(sources)
+        <doxygen:param>ALIASES="esafe=\"@par Exception Safety\""
+        <doxygen:param>DISTRIBUTE_GROUP_DOC=YES
+        <doxygen:param>MACRO_EXPANSION=YES
+        <doxygen:param>EXPAND_ONLY_PREDEF=YES
+        <doxygen:param>PREDEFINED="\\
+            BOOST_STATIC_STRING_DOCS \\
+            \"BOOST_STATIC_STRING_CPP11_CONSTEXPR=constexpr\" \\
+            \"BOOST_STATIC_STRING_CPP14_CONSTEXPR=constexpr\" \\
+            \"BOOST_STATIC_STRING_CPP17_CONSTEXPR=constexpr\" \\
+            \"BOOST_STATIC_STRING_CPP20_CONSTEXPR=constexpr\""
+        <doxygen:param>ABBREVIATE_BRIEF=
+        <doxygen:param>INLINE_INHERITED_MEMB=YES
+        <doxygen:param>JAVADOC_AUTOBRIEF=YES
+        <doxygen:param>AUTOLINK_SUPPORT=NO
+        <doxygen:param>EXTRACT_ALL=YES
+        <doxygen:param>EXTRACT_PRIVATE=YES
+        <doxygen:param>EXTRACT_LOCAL_CLASSES=NO
+        <doxygen:param>INLINE_INFO=NO
+        <doxygen:param>SORT_MEMBER_DOCS=NO
+        <doxygen:param>SORT_MEMBERS_CTORS_1ST=YES
+        <doxygen:param>STRIP_FROM_PATH=$(include-prefix)
+
+        # <doxygen:param>ALLOW_UNICODE_NAMES=NO
+        # <doxygen:param>GROUP_NESTED_COMPOUNDS=NO
+        # <doxygen:param>HIDE_COMPOUND_REFERENCE=NO
+        # <doxygen:param>WARN_AS_ERROR=NO
+
+        <docca:config>config.json
    ;

-rule make_doxygen_xml ( targets * : sources * : properties * )
-{
-    LIB_DIR on $(targets) =
-        [ path.native [ path.parent [ path.root
-        [ on $(sources[1]) return $(SEARCH) ] [ path.pwd ] ] ] ] ;
-}
-
-if [ os.name ] = NT
-{
-    actions make_doxygen_xml
-    {
-        SET LIB_DIR=$(LIB_DIR)
-        SET XML_OUTPUT=$(1:D)
-        "$(.doxygen)" $(2)
-    }
-}
-else
-{
-    actions make_doxygen_xml
-    {
-        export LIB_DIR=$(LIB_DIR)
-        export XML_OUTPUT=$(1:D)
-        "$(.doxygen)" $(2)
-    }
-}
-
-#-------------------------------------------------------------------------------
-#
-# Copy all the XSLT modules to the target directory.
-#
-# FIXME: Change this so we can just specify a directory,
-#        rather than every file individually.
-#
-#        Also, somehow force dependencies in a general way
-#        such that the XSLT has to be executed again
-#        if any of the modules change. For example,
-#        if base-extract-xml-pages.xml changes, then
-#        an invocation of extract-xml-pages.xsl (which
-#        imports the former) must be run again.
-#
-path-constant docca : ../../../tools/docca ;
-make extract-xml-pages.xsl      : $(docca)/include/docca/extract-xml-pages.xsl      : @copy_script ;
-make base-extract-xml-pages.xsl : $(docca)/include/docca/base-extract-xml-pages.xsl : @copy_script ;
-make common.xsl                 : $(docca)/include/docca/common.xsl                 : @copy_script ;
-make stage1.xsl                 : $(docca)/include/docca/stage1.xsl                 : @copy_script ;
-make base-stage1.xsl            : $(docca)/include/docca/base-stage1.xsl            : @copy_script ;
-make stage2.xsl                 : $(docca)/include/docca/stage2.xsl                 : @copy_script ;
-make base-stage2.xsl            : $(docca)/include/docca/base-stage2.xsl            : @copy_script ;
-make assemble-quickbook.xsl     : $(docca)/include/docca/assemble-quickbook.xsl     : @copy_script ;
-make emphasized-types.xsl       : $(docca)/include/docca/emphasized-types.xsl       : @copy_script ;
-make base-config.xsl            : $(docca)/include/docca/base-config.xsl            : @copy_script ;
-
-# Copy the project-specific config XSLT
-make custom-overrides.xsl : xsl/custom-overrides.xsl : @copy_script ;
-
-# Make a copy of the given file.
-#
-actions copy_script
-{
-    cp $(2[1]) $(1)
-}
-
-
-# This is to initially create the directory as a side effect; I'm sure there's a better way...
-make xml-pages/directory/placeholder : index.xml : @null_action ;
-
-#-------------------------------------------------------------------------------
-#
-# Run index.xml through the first transformation stage
-# (assembling and splitting the XML into page-specific files).
-#
-make xml-pages.xml
-    :
-        index.xml
-        extract-xml-pages.xsl
-
-        # Make bjam aware of additional dependencies
-        base-extract-xml-pages.xsl
-        base-config.xsl
-        custom-overrides.xsl
-        common.xsl
-    :
-        saxonhe.saxonhe
-    ;
-
-# This is just to make the directory eligible as a source
-make xml-pages : index.xml : @null_action ;
-
-# Not ready for prime time until I figure out how to get the xslt-visualizer code in place
-#make stage1/code-trace-enabled/stage1.xsl
-#    :
-#        stage1.xsl
-#        xslt-visualizer/xsl/trace-enable.xsl
-#    :
-#        saxonhe.saxonhe
-#    ;
-
-# This is to initially create the directory as a side effect; I'm sure there's a better way...
-make stage1/results/directory/placeholder : xml-pages.xml : @null_action ;
-make stage2/results/directory/placeholder : xml-pages.xml : @null_action ;
-
-# TODO: figure out why this (and the following stage) get built every time
-make stage1/results
-    :
-        xml-pages
-        stage1.xsl
-
-        # additional dependencies
-        xml-pages.xml
-        base-stage1.xsl
-        base-config.xsl
-        custom-overrides.xsl
-        common.xsl
-    :
-        saxonhe.saxonhe_dir
-    ;
-
-make stage2/results
-    :
-        stage1/results
-        stage2.xsl
-
-        # additional dependencies
-        emphasized-types.xsl
-        base-stage2.xsl
-        base-config.xsl
-        custom-overrides.xsl
-        common.xsl
-    :
-        saxonhe.saxonhe_dir
-    ;
-
-make reference.qbk
-    :
-        xml-pages.xml
-        assemble-quickbook.xsl
-
-        # TODO: make this input to the XSLT somehow
-        #       rather than relying on it being hard-coded
-        #       in the XSLT (which it is!)
-        stage2/results
-    :
-        saxonhe.saxonhe
-    ;
-
-actions make_dir
-{
-    mkdir $(1)
-}
-
-make combine.xslt : index.xml : @null_action ;
-
-actions touch_file
-{
-    touch $(1) ;
-}
-
-actions null_action
-{
-    touch -c $(1) ;
-}
-
-make reference.xml
-    :
-        combine.xslt
-        index.xml
-    :
-        @call-xsltproc
-    ;
-
-actions call-xsltproc
-{
-    "$(.xsltproc)" $(2) > $(1)
-}
-
-#-------------------------------------------------------------------------------
-#
-# Produce the reference.qbk file by running
-# the reference xml through the transform.
-#
-#make reference.qbk
-#    :
-#        reference.xml
-#        transform.xsl
-#    :
-#        saxonhe.saxonhe
-#    ;
-
-# We have to make a copy of reference.qbk and put it
-# in a place where the static .qbk files can find it
-#
-install qbk : reference.qbk ;
-
 #-------------------------------------------------------------------------------
 #
 # Produce the Boost.Book XML from the QuickBook
@@ -265,7 +71,7 @@ xml static_string_doc
        qbk/main.qbk
    :
        <dependency>images
-        <dependency>qbk
+        <dependency>reference.qbk
    ;

 explicit static_string_doc ;
@@ -284,7 +90,7 @@ boostbook static_string
        <xsl:param>chapter.autolabel=0
        <xsl:param>chunk.section.depth=8               # Depth to which sections should be chunked
        <xsl:param>chunk.first.sections=1              # Chunk the first top-level section?
-        <xsl:param>generate.toc=""
+        <xsl:param>generate.toc="chapter toc,title section nop reference nop"
        <include>../../../tools/boostbook/dtd
    :
        <dependency>images
--- a/doc/config.json
+++ b/doc/config.json
@@ -0,0 +1,12 @@
+{
+    "include_private": false,
+    "legacy_behavior": false,
+    "external_marker": "!EXTERNAL!",
+    "link_prefix": "static_string.ref.",
+    "default_namespace": "boost::static_strings",
+    "allowed_prefixes": ["boost::static_strings::", "std::"],
+    "convenience_header": "boost/static_string.hpp",
+    "replace_strings": {
+        "__see_below__": "``['see-below]``"
+    }
+}
--- a/doc/externals.hpp
+++ b/doc/externals.hpp
@@ -0,0 +1,64 @@
+#pragma once
+
+namespace boost {
+
+/// !EXTERNAL!
+///
+/// @see https://www.boost.org/doc/libs/release/libs/utility/doc/html/utility/utilities/string_view.html
+template <class T, class Traits>
+struct basic_string_view {};
+
+} // namespace boost
+
+namespace std {
+
+/// !EXTERNAL!
+///
+/// @see https://en.cppreference.com/w/cpp/iterator/reverse_iterator
+template <class T>
+struct reverse_iterator {};
+
+/// !EXTERNAL!
+///
+/// @see https://en.cppreference.com/w/cpp/types/size_t
+struct size_t {};
+
+/// !EXTERNAL!
+///
+/// @see https://en.cppreference.com/w/cpp/types/integer
+struct uint64_t {};
+
+/// !EXTERNAL!
+///
+/// @see https://en.cppreference.com/w/cpp/types/integer
+struct int64_t {};
+
+/// !EXTERNAL!
+///
+/// @see https://en.cppreference.com/w/cpp/types/nullptr_t
+struct nullptr_t {};
+
+/// !EXTERNAL!
+///
+/// @see https://en.cppreference.com/w/cpp/types/ptrdiff_t
+struct ptrdiff_t {};
+
+/// !EXTERNAL!
+///
+/// @see https://en.cppreference.com/w/cpp/utility/initializer_list
+template <class T>
+struct initializer_list {};
+
+/// !EXTERNAL!
+///
+/// @see https://en.cppreference.com/w/cpp/io/basic_ostream
+template <class T, class Traits>
+struct basic_ostream {};
+
+/// !EXTERNAL!
+///
+/// @see https://en.cppreference.com/w/cpp/types/numeric_limits
+template <class T>
+struct numeric_limits {};
+
+} // namespace std
--- a/doc/source.dox
+++ b/doc/source.dox
@@ -1,252 +0,0 @@
-#---------------------------------------------------------------------------
-# Configuration options related to the input files
-#---------------------------------------------------------------------------
-
-INPUT = \
-        $(LIB_DIR)/include/boost/static_string
-
-ALIASES               += esafe="@par Exception Safety"
-
-INPUT_ENCODING         = UTF-8
-FILE_PATTERNS          =
-RECURSIVE              = NO
-EXCLUDE                =
-EXCLUDE_SYMLINKS       = NO
-EXCLUDE_PATTERNS       =
-EXCLUDE_SYMBOLS        =
-EXAMPLE_PATH           =
-EXAMPLE_PATTERNS       =
-EXAMPLE_RECURSIVE      = NO
-IMAGE_PATH             =
-INPUT_FILTER           =
-FILTER_PATTERNS        =
-FILTER_SOURCE_FILES    = NO
-FILTER_SOURCE_PATTERNS =
-USE_MDFILE_AS_MAINPAGE =
-
-#---------------------------------------------------------------------------
-# Configuration options related to the preprocessor
-#---------------------------------------------------------------------------
-ENABLE_PREPROCESSING   = YES
-MACRO_EXPANSION        = YES
-EXPAND_ONLY_PREDEF     = YES
-SEARCH_INCLUDES        = YES
-INCLUDE_PATH           = ../
-INCLUDE_FILE_PATTERNS  =
-
-PREDEFINED             = \
-                        BOOST_STATIC_STRING_DOCS \
-						"BOOST_STATIC_STRING_CPP11_CONSTEXPR=constexpr" \
-						"BOOST_STATIC_STRING_CPP14_CONSTEXPR=constexpr" \
-						"BOOST_STATIC_STRING_CPP17_CONSTEXPR=constexpr" \
-						"BOOST_STATIC_STRING_CPP20_CONSTEXPR=constexpr"
-						
-EXPAND_AS_DEFINED      =
-SKIP_FUNCTION_MACROS   = YES
-
-#---------------------------------------------------------------------------
-# Project related configuration options
-#---------------------------------------------------------------------------
-DOXYFILE_ENCODING      = UTF-8
-PROJECT_NAME           = "StaticString"
-PROJECT_NUMBER         =
-PROJECT_BRIEF          = String Library
-PROJECT_LOGO           =
-OUTPUT_DIRECTORY       =
-CREATE_SUBDIRS         = NO
-#####ALLOW_UNICODE_NAMES    = NO
-OUTPUT_LANGUAGE        = English
-BRIEF_MEMBER_DESC      = YES
-REPEAT_BRIEF           = YES
-ABBREVIATE_BRIEF       =
-ALWAYS_DETAILED_SEC    = NO
-INLINE_INHERITED_MEMB  = YES
-FULL_PATH_NAMES        = YES
-#STRIP_FROM_PATH        = $(LIB_DIR)/include # Requires doxygen 1.8.7+
-STRIP_FROM_INC_PATH    =
-SHORT_NAMES            = NO
-JAVADOC_AUTOBRIEF      = YES
-QT_AUTOBRIEF           = NO
-MULTILINE_CPP_IS_BRIEF = NO
-INHERIT_DOCS           = YES
-SEPARATE_MEMBER_PAGES  = NO
-TAB_SIZE               = 4
-TCL_SUBST              =
-OPTIMIZE_OUTPUT_FOR_C  = NO
-OPTIMIZE_OUTPUT_JAVA   = NO
-OPTIMIZE_FOR_FORTRAN   = NO
-OPTIMIZE_OUTPUT_VHDL   = NO
-EXTENSION_MAPPING      =
-MARKDOWN_SUPPORT       = YES
-AUTOLINK_SUPPORT       = YES
-BUILTIN_STL_SUPPORT    = NO
-CPP_CLI_SUPPORT        = NO
-SIP_SUPPORT            = NO
-IDL_PROPERTY_SUPPORT   = YES
-DISTRIBUTE_GROUP_DOC   = YES
-#####GROUP_NESTED_COMPOUNDS = NO
-SUBGROUPING            = YES
-INLINE_GROUPED_CLASSES = NO
-INLINE_SIMPLE_STRUCTS  = NO
-TYPEDEF_HIDES_STRUCT   = NO
-LOOKUP_CACHE_SIZE      = 0
-
-#---------------------------------------------------------------------------
-# Build related configuration options
-#---------------------------------------------------------------------------
-EXTRACT_ALL            = YES
-EXTRACT_PRIVATE        = YES
-EXTRACT_PACKAGE        = NO
-EXTRACT_STATIC         = NO
-EXTRACT_LOCAL_CLASSES  = NO
-EXTRACT_LOCAL_METHODS  = NO
-EXTRACT_ANON_NSPACES   = NO
-HIDE_UNDOC_MEMBERS     = NO
-HIDE_UNDOC_CLASSES     = NO
-HIDE_FRIEND_COMPOUNDS  = NO
-HIDE_IN_BODY_DOCS      = NO
-INTERNAL_DOCS          = NO
-CASE_SENSE_NAMES       = YES
-HIDE_SCOPE_NAMES       = NO
-#####HIDE_COMPOUND_REFERENCE= NO
-SHOW_INCLUDE_FILES     = NO
-SHOW_GROUPED_MEMB_INC  = NO
-FORCE_LOCAL_INCLUDES   = NO
-INLINE_INFO            = NO
-SORT_MEMBER_DOCS       = NO
-SORT_BRIEF_DOCS        = NO
-SORT_MEMBERS_CTORS_1ST = YES
-SORT_GROUP_NAMES       = NO
-SORT_BY_SCOPE_NAME     = NO
-STRICT_PROTO_MATCHING  = NO
-GENERATE_TODOLIST      = NO
-GENERATE_TESTLIST      = NO
-GENERATE_BUGLIST       = NO
-GENERATE_DEPRECATEDLIST= NO
-ENABLED_SECTIONS       =
-MAX_INITIALIZER_LINES  = 30
-SHOW_USED_FILES        = NO
-SHOW_FILES             = NO
-SHOW_NAMESPACES        = NO
-FILE_VERSION_FILTER    =
-LAYOUT_FILE            =
-CITE_BIB_FILES         =
-
-#---------------------------------------------------------------------------
-# Configuration options related to warning and progress messages
-#---------------------------------------------------------------------------
-QUIET                  = NO
-WARNINGS               = YES
-WARN_IF_UNDOCUMENTED   = YES
-WARN_IF_DOC_ERROR      = YES
-WARN_NO_PARAMDOC       = NO
-#####WARN_AS_ERROR          = NO
-WARN_FORMAT            = "$file:$line: $text"
-WARN_LOGFILE           =
-
-#---------------------------------------------------------------------------
-# Configuration options related to source browsing
-#---------------------------------------------------------------------------
-SOURCE_BROWSER         = NO
-INLINE_SOURCES         = NO
-STRIP_CODE_COMMENTS    = YES
-REFERENCED_BY_RELATION = NO
-REFERENCES_RELATION    = NO
-REFERENCES_LINK_SOURCE = YES
-SOURCE_TOOLTIPS        = YES
-USE_HTAGS              = NO
-VERBATIM_HEADERS       = YES
-CLANG_ASSISTED_PARSING = NO
-CLANG_OPTIONS          =
-
-#---------------------------------------------------------------------------
-# Configuration options related to the alphabetical class index
-#---------------------------------------------------------------------------
-ALPHABETICAL_INDEX     = YES
-COLS_IN_ALPHA_INDEX    = 5
-IGNORE_PREFIX          =
-
-#---------------------------------------------------------------------------
-# Configuration options related to the HTML output
-#---------------------------------------------------------------------------
-GENERATE_HTML          = NO
-HTML_OUTPUT            = dhtm
-HTML_FILE_EXTENSION    = .html
-HTML_HEADER            =
-HTML_FOOTER            =
-HTML_STYLESHEET        =
-HTML_EXTRA_STYLESHEET  =
-HTML_EXTRA_FILES       =
-HTML_COLORSTYLE_HUE    = 220
-HTML_COLORSTYLE_SAT    = 100
-HTML_COLORSTYLE_GAMMA  = 80
-HTML_TIMESTAMP         = NO
-HTML_DYNAMIC_SECTIONS  = NO
-HTML_INDEX_NUM_ENTRIES = 100
-GENERATE_DOCSET        = NO
-DOCSET_FEEDNAME        = "Doxygen generated docs"
-DOCSET_BUNDLE_ID       = org.doxygen.Project
-DOCSET_PUBLISHER_ID    = org.doxygen.Publisher
-DOCSET_PUBLISHER_NAME  = Publisher
-GENERATE_HTMLHELP      = NO
-CHM_FILE               =
-HHC_LOCATION           =
-GENERATE_CHI           = NO
-CHM_INDEX_ENCODING     =
-BINARY_TOC             = NO
-TOC_EXPAND             = NO
-GENERATE_QHP           = NO
-QCH_FILE               =
-QHP_NAMESPACE          = org.doxygen.Project
-QHP_VIRTUAL_FOLDER     = doc
-QHP_CUST_FILTER_NAME   =
-QHP_CUST_FILTER_ATTRS  =
-QHP_SECT_FILTER_ATTRS  =
-QHG_LOCATION           =
-GENERATE_ECLIPSEHELP   = NO
-ECLIPSE_DOC_ID         = org.doxygen.Project
-DISABLE_INDEX          = NO
-GENERATE_TREEVIEW      = NO
-ENUM_VALUES_PER_LINE   = 4
-TREEVIEW_WIDTH         = 250
-EXT_LINKS_IN_WINDOW    = NO
-FORMULA_FONTSIZE       = 10
-FORMULA_TRANSPARENT    = YES
-USE_MATHJAX            = NO
-MATHJAX_FORMAT         = HTML-CSS
-MATHJAX_RELPATH        = http://cdn.mathjax.org/mathjax/latest
-MATHJAX_EXTENSIONS     =
-MATHJAX_CODEFILE       =
-SEARCHENGINE           = YES
-SERVER_BASED_SEARCH    = NO
-EXTERNAL_SEARCH        = NO
-SEARCHENGINE_URL       =
-SEARCHDATA_FILE        = searchdata.xml
-EXTERNAL_SEARCH_ID     =
-EXTRA_SEARCH_MAPPINGS  =
-
-GENERATE_LATEX         = NO
-GENERATE_RTF           = NO
-GENERATE_MAN           = NO
-GENERATE_DOCBOOK       = NO
-GENERATE_AUTOGEN_DEF   = NO
-GENERATE_PERLMOD       = NO
-CLASS_DIAGRAMS         = NO
-HAVE_DOT               = NO
-
-#---------------------------------------------------------------------------
-# Configuration options related to the XML output
-#---------------------------------------------------------------------------
-GENERATE_XML           = YES
-XML_OUTPUT             = $(XML_OUTPUT)
-XML_PROGRAMLISTING     = YES
-
-#---------------------------------------------------------------------------
-# Configuration options related to external references
-#---------------------------------------------------------------------------
-TAGFILES               =
-GENERATE_TAGFILE       =
-ALLEXTERNALS           = NO
-EXTERNAL_GROUPS        = YES
-EXTERNAL_PAGES         = YES
-PERL_PATH              = /usr/bin/perl
--- a/doc/xsl/custom-overrides.xsl
+++ b/doc/xsl/custom-overrides.xsl
@@ -1,11 +0,0 @@
-<xsl:stylesheet version="3.0"
-  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
-  xmlns:xs="http://www.w3.org/2001/XMLSchema"
-  exclude-result-prefixes="xs"
-  expand-text="yes">
-
-  <xsl:variable name="doc-ref" select="'static_string.ref'"/>
-  <xsl:variable name="doc-ns" select="'boost::static_strings'"/>
-  <xsl:variable name="include-private-members" select="false()"/>
-
-</xsl:stylesheet>
--- a/include/boost/static_string/config.hpp
+++ b/include/boost/static_string/config.hpp
@@ -14,13 +14,24 @@
 // Are we dependent on Boost?
 // #define BOOST_STATIC_STRING_STANDALONE

+#include <cstdint>
+
+// detect 32/64 bit
+#if UINTPTR_MAX == UINT64_MAX
+#define BOOST_STATIC_STRING_ARCH 64
+#elif UINTPTR_MAX == UINT32_MAX
+#define BOOST_STATIC_STRING_ARCH 32
+#else
+#error Unknown or unsupported architecture, please open an issue
+#endif
+
 // Can we have deduction guides?
 #if __cpp_deduction_guides >= 201703L
 #define BOOST_STATIC_STRING_USE_DEDUCT
 #endif

 // Include <version> if we can
-#ifdef __has_include 
+#ifdef __has_include
 #if __has_include(<version>)
 #include <version>
 #endif
@@ -45,7 +56,7 @@
 #define BOOST_STATIC_STRING_CHECK_FOR_ATTR(x) __has_cpp_attribute(x)
 #elif defined(__has_attribute)
 #define BOOST_STATIC_STRING_CHECK_FOR_ATTR(x) __has_attribute(x)
-#else 
+#else
 #define BOOST_STATIC_STRING_CHECK_FOR_ATTR(x) 0
 #endif

@@ -128,9 +139,6 @@
 #ifndef BOOST_STATIC_STRING_THROW
 #define BOOST_STATIC_STRING_THROW(ex) BOOST_THROW_EXCEPTION(ex)
 #endif
-#ifndef BOOST_STATIC_STRING_STATIC_ASSERT
-#define BOOST_STATIC_STRING_STATIC_ASSERT(cond, msg) BOOST_STATIC_ASSERT_MSG(cond, msg)
-#endif
 #ifndef BOOST_STATIC_STRING_ASSERT
 #define BOOST_STATIC_STRING_ASSERT(cond) BOOST_ASSERT(cond)
 #endif
@@ -138,24 +146,60 @@
 #ifndef BOOST_STATIC_STRING_THROW
 #define BOOST_STATIC_STRING_THROW(ex) throw ex
 #endif
-#ifndef BOOST_STATIC_STRING_STATIC_ASSERT
-#define BOOST_STATIC_STRING_STATIC_ASSERT(cond, msg) static_assert(cond, msg)
-#endif
 #ifndef BOOST_STATIC_STRING_ASSERT
 #define BOOST_STATIC_STRING_ASSERT(cond) assert(cond)
 #endif
 #endif

 #ifndef BOOST_STATIC_STRING_STANDALONE
+#include <boost/config.hpp>
 #include <boost/assert.hpp>
 #include <boost/container_hash/hash.hpp>
-#include <boost/static_assert.hpp>
 #include <boost/utility/string_view.hpp>
+#include <boost/core/detail/string_view.hpp>
 #include <boost/throw_exception.hpp>
+
+#if !defined(BOOST_NO_CXX17_HDR_STRING_VIEW) || \
+     defined(BOOST_STATIC_STRING_CXX17_STRING_VIEW)
+#include <string_view>
+#define BOOST_STATIC_STRING_HAS_STD_STRING_VIEW
+#endif
 #else
 #include <cassert>
 #include <stdexcept>
+
+#if defined(__has_include)
+#  if !__has_include(<string_view>)
+#    define BOOST_STATIC_STRING_NO_CXX17_HDR_STRING_VIEW
+#  endif
+/*
+ * Replicate the logic from Boost.Config
+ */
+// GNU libstdc++3:
+#elif defined(__GLIBCPP__) || defined(__GLIBCXX__)
+#  if ((__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) < 70100) || (__cplusplus <= 201402L)
+#    define BOOST_STATIC_STRING_NO_CXX17_HDR_STRING_VIEW
+#  endif
+// libc++:
+#elif defined(_LIBCPP_VERSION)
+#  if (_LIBCPP_VERSION < 4000) || (__cplusplus <= 201402L)
+#    define BOOST_STATIC_STRING_NO_CXX17_HDR_STRING_VIEW
+#  endif
+// MSVC uses logic from catch all for BOOST_NO_CXX17_HDR_STRING_VIEW
+// catch all:
+#elif !defined(_YVALS) && !defined(_CPPLIB_VER)
+#  if (!defined(__has_include) || (__cplusplus < 201700))
+#    define BOOST_STATIC_STRING_NO_CXX17_HDR_STRING_VIEW
+#  elif !__has_include(<string_view>)
+#    define BOOST_STATIC_STRING_NO_CXX17_HDR_STRING_VIEW
+#  endif
+#endif
+
+#if !defined(BOOST_STATIC_STRING_NO_CXX17_HDR_STRING_VIEW) || \
+     defined(BOOST_STATIC_STRING_CXX17_STRING_VIEW)
 #include <string_view>
+#define BOOST_STATIC_STRING_HAS_STD_STRING_VIEW
+#endif
 #endif

 // Compiler bug prevents constexpr from working with clang 4.x and 5.x
@@ -192,6 +236,30 @@ defined(BOOST_STATIC_STRING_CPP14)
 #define BOOST_STATIC_STRING_GCC5_BAD_CONSTEXPR
 #endif

+#ifndef BOOST_STATIC_STRING_STANDALONE
+#if ! defined(BOOST_NO_CWCHAR) && ! defined(BOOST_NO_SWPRINTF)
+#define BOOST_STATIC_STRING_HAS_WCHAR
+#endif
+#else
+#ifndef __has_include
+// If we don't have __has_include in standalone,
+// we will assume that <cwchar> exists.
+#define BOOST_STATIC_STRING_HAS_WCHAR
+#elif __has_include(<cwchar>)
+#define BOOST_STATIC_STRING_HAS_WCHAR
+#endif
+#endif
+
+#ifdef BOOST_STATIC_STRING_HAS_WCHAR
+#include <cwchar>
+#endif
+
+// Define the basic string_view type used by the library
+// Conversions to and from other available string_view types
+// are still defined.
+#if !defined(BOOST_STATIC_STRING_STANDALONE) || \
+     defined(BOOST_STATIC_STRING_HAS_STD_STRING_VIEW)
+#define BOOST_STATIC_STRING_HAS_ANY_STRING_VIEW
 namespace boost {
 namespace static_strings {

@@ -205,4 +273,10 @@ using basic_string_view =
 #endif
 } // static_strings
 } // boost
-#endif
+#endif
+
+#if defined(__cpp_lib_to_string) && __cpp_lib_to_string >= 202306L // std::to_[w]string() redefined in terms of std::format()
+#define BOOST_STATIC_STRING_USE_STD_FORMAT
+#endif
+
+#endif
--- a/include/boost/static_string/static_string.hpp
+++ b/include/boost/static_string/static_string.hpp
--- a/meta/libraries.json
+++ b/meta/libraries.json
@@ -7,11 +7,12 @@
    ],
    "description": "A fixed capacity dynamically sized string.",
    "category": [
-        "Container",
+        "Containers",
        "String"
    ],
    "maintainers": [
        "Krystian Stasiowski <sdkrystian@gmail.com>",
+        "Alan de Freitas <alandefreitas@gmail.com>",
        "Vinnie Falco <vinnie.falco@gmail.com>"
    ],
    "cxxstd": "11"
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2016-2017 Vinnie Falco (vinnie dot falco at gmail dot com)
+# Copyright (c) 2022 Alan de Freitas (alandefreitas@gmail.com)
 #
 # 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)
@@ -7,16 +7,26 @@
 # Official repository: https://github.com/boostorg/static_string
 #

-GroupSources (include/boost/static_string static_string)
-GroupSources (test "/")
+# Custom target used by the boost super-project
+if(NOT TARGET tests)
+        add_custom_target(tests)
+        set_property(TARGET tests PROPERTY FOLDER _deps)
+endif()

-add_executable (tests
-    ${PROJECT_FILES}
-    Jamfile
-    static_string.cpp
-)
+set(BOOST_STATIC_STRING_TESTS_FILES
+        CMakeLists.txt
+        Jamfile
+        constexpr_tests.hpp
+        compile_fail.hpp
+        static_string.cpp
+        )

-target_link_libraries(tests
-    )
+source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR} FILES ${BOOST_STATIC_STRING_TESTS_FILES})
+add_executable(boost_static_string_tests ${BOOST_STATIC_STRING_TESTS_FILES})

-set_property(TARGET tests PROPERTY FOLDER "tests")
+# The include dependencies are found in the CMakeLists.txt
+# of the root project directory.
+# See: BOOST_STATIC_STRING_UNIT_TEST_LIBRARIES
+target_link_libraries(boost_static_string_tests PRIVATE Boost::static_string)
+add_test(NAME boost_static_string_tests COMMAND boost_static_string_tests)
+add_dependencies(tests boost_static_string_tests)
--- a/test/Jamfile
+++ b/test/Jamfile
@@ -8,18 +8,21 @@
 #

 import testing ;
-import ../../config/checks/config : requires ;
+import-search /boost/config/checks ;
+import config : requires ;

 local defines =
    [ requires
    cxx11_constexpr
    cxx11_decltype
    cxx11_hdr_tuple
+    cxx11_hdr_type_traits
    cxx11_template_aliases
    cxx11_variadic_templates
    ]
    ;

-project : requirements $(defines) ;
+project : requirements $(defines)
+    <library>/boost/static_string//boost_static_string ;

 run static_string.cpp ;
--- a/test/cmake_test/CMakeLists.txt
+++ b/test/cmake_test/CMakeLists.txt
@@ -0,0 +1,24 @@
+# Copyright 2021-2025 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 3.8...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_static_string REQUIRED)
+else()
+    set(BOOST_INCLUDE_LIBRARIES static_string)
+    add_subdirectory(../../../.. deps/boost EXCLUDE_FROM_ALL)
+endif()
+
+add_executable(main main.cpp)
+target_link_libraries(main Boost::static_string)
+
+enable_testing()
+add_test(NAME main COMMAND main)
+
+add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND} --output-on-failure -C $<CONFIG>)
--- a/test/cmake_test/main.cpp
+++ b/test/cmake_test/main.cpp
@@ -0,0 +1,18 @@
+//
+// Copyright (c) 2025 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)
+//
+// Official repository: https://github.com/boostorg/static_string
+//
+
+#include <boost/static_string.hpp>
+
+int main()
+{
+    // Smoke test only
+    boost::static_string<1> s_empty;
+    boost::static_string<4> s_3(3, 'x');
+    return (s_empty.empty() && s_3.size() == 3) ? 0 : 1;
+}
--- a/test/constexpr_tests.hpp
+++ b/test/constexpr_tests.hpp
@@ -41,14 +41,14 @@ struct cxper_char_traits
      *(dest++) = *(src++);
    return temp;
  }
-  static constexpr char_type* copy(char_type* dest, const char_type* src, std::size_t n) 
-  { 
+  static constexpr char_type* copy(char_type* dest, const char_type* src, std::size_t n)
+  {
    const auto temp = dest;
    while (n--)
      *(dest++) = *(src++);
    return temp;
  }
-  static constexpr char_type* assign(char_type* dest, std::size_t n, char_type ch) 
+  static constexpr char_type* assign(char_type* dest, std::size_t n, char_type ch)
  {
    const auto temp = dest;
    while (n--)
@@ -62,8 +62,8 @@ using cxper_char_traits = std::char_traits<char>;
 using cstatic_string = basic_static_string<50, char, cxper_char_traits>;

 inline
-constexpr 
-bool 
+constexpr
+bool
 testConstantEvaluation()
 {
 #ifdef BOOST_STATIC_STRING_CPP20
@@ -171,8 +171,10 @@ testConstantEvaluation()

  a.substr(0);

+#ifdef BOOST_STATIC_STRING_HAS_ANY_STRING_VIEW
  // subview
  a.subview(0);
+#endif

  // copy
  char k[20]{};
@@ -357,8 +359,10 @@ testConstantEvaluation()
  a.substr(0);
 #endif

+#ifdef BOOST_STATIC_STRING_HAS_STRING_VIEW
  // subview
  a.subview(0);
+#endif

  // copy
  char k[20]{};
@@ -421,7 +425,7 @@ testConstantEvaluation()
  // ends_with
  a.ends_with('a');
  a.ends_with("a");
- 
+
  return true;
 #elif defined(BOOST_STATIC_STRING_CPP14)
  // c++14 constexpr tests
@@ -521,17 +525,17 @@ testConstantEvaluation()
  a.compare("a");
  a.compare(0, 1, "a");
  a.compare(0, 1, "a", 1);
-  
+
  // substr
  // in gcc 5, a constexpr non-static member function returning the class
  // is a member of causes an ICE
 #ifndef BOOST_STATIC_STRING_GCC5_BAD_CONSTEXPR
  a.substr(0, 1);
 #endif
-  
+
  // subview
  a.subview(0);
-  
+
  // copy
  char k[20]{};
  a.copy(k, 1, 0);
@@ -596,12 +600,12 @@ testConstantEvaluation()
  return true;
 #elif defined(BOOST_STATIC_STRING_CPP11)
  // c++11 constexpr tests
-  return (cstatic_string().size() + 
-    cstatic_string().length() + 
-    cstatic_string().max_size() + 
+  return (cstatic_string().size() +
+    cstatic_string().length() +
+    cstatic_string().max_size() +
    cstatic_string().capacity()) != 0 &&
    cstatic_string().empty();
 #endif
 }
 } // static_strings
-} // boost
+} // boost
--- a/test/static_string.cpp
+++ b/test/static_string.cpp
Author	SHA1	Message	Date
Gennaro Prota	c915934529	Fix four occorrences of a typo ("arugment") in the Javadoc comments	2025-11-14 12:03:00 +01:00
Gennaro Prota	10b5491104	Avoid two C4244 warnings from MSVC	2025-11-05 11:30:41 +01:00
Alexander Grund	a58319dbdd	Switch boost.io to boost.org	2025-10-24 11:59:10 +02:00
Alexander Grund	4c84b61975	README: Replace travis badges by GHA badges	2025-10-24 11:59:10 +02:00
Alexander Grund	fbd6051165	Update Link to regression test matrix in README	2025-10-24 11:59:10 +02:00
Alexander Grund	db1ea76a17	Fix required CMake version `source_group(TREE` requires CMake 3.8	2025-10-24 11:58:47 +02:00
Alexander Grund	ee172b86fd	Try standalone only with >=C++17	2025-10-24 11:57:55 +02:00
Alexander Grund	bd3dd01259	Update Drone from Boost.CI	2025-10-24 11:57:55 +02:00
Gennaro Prota	a841869405	Remove a use of std::strcpy() to avoid a C4996 warning from MSVC	2025-10-24 11:00:21 +02:00
Alexander Grund	3613e9578d	Fix standalone build with Clang The config.hpp uses `BOOST_LIBSTDCXX_VERSION` which isn't defined in standalone mode so `BOOST_STATIC_STRING_NO_CXX17_HDR_STRING_VIEW` will be defined. This then causes build failures for code expecting the availability of string_view.	2025-10-24 10:11:37 +02:00
Alexander Grund	6f17b60377	Guard test requiring string_view	2025-10-24 10:11:37 +02:00
Gennaro Prota	815678e1e7	CI: Test C++26/2c again	2025-10-23 16:49:48 +02:00
Gennaro Prota	2cc22bf5a8	Align to_static_[w]string() with C++26 std::to_[w]string() C++26 specifies that std::to_string() and std::to_wstring() format floating point values as if using std::format(). This commit updates the internal conversion helpers to match that behavior, using std::format_to_n() for efficient, allocation-free formatting directly into the static_string/static_wstring buffer. Fallbacks using snprintf()/swprintf() remain active for pre-C++26 builds. This ensures consistent formatting across standard and Boost APIs.	2025-10-23 16:49:48 +02:00
Gennaro Prota	d6f976a7df	Fix the sizes of the strings returned by to_static_string() and to_static_wstring() for floating point values	2025-10-23 16:49:48 +02:00
Gennaro Prota	7b564d8d26	Fix two macro names in the unit tests	2025-10-22 19:18:39 +02:00
Gennaro Prota	3c37deed99	Fix the previous commit	2025-10-22 19:11:09 +02:00
Gennaro Prota	34ef5c45be	Remove an unused dependency on Boost.StaticAssert This closes issue #73.	2025-10-22 19:06:12 +02:00
Kenneth Reitz	0f34644488	Update libraries.json /s/container/containers The other libraries reference "containers" instead of "container"	2025-10-22 18:48:18 +02:00
Dmitry Arkhipov	4c27826548	use Python version of Docca	2025-10-22 18:35:38 +02:00
Gennaro Prota	9c5d69475d	Implement the arithmetic conversions in terms of resize_and_overwrite() Reason: Performing the conversions without accessing private members, providing a model for users to implement their own with comparable efficiency.	2025-10-09 17:45:16 +02:00
Gennaro Prota	300781d954	Add a resize_and_overwrite() member Reason: This is in preparation of the next commit. See its commit message.	2025-10-09 17:45:16 +02:00
Gennaro Prota	cd1a1a41c3	Don't use an additional buffer in the arithmetic conversions In the case of the floating point conversions, this effectively avoids a copy of the buffer contents. In the case of the integer conversions, it doesn't eliminate the copy, but still removes the extra buffer. This fixes issue #65.	2025-10-09 17:45:16 +02:00
Alexander Grund	0d255f7438	Appveyor: Update MinGW 32bit job Use the variant from Boost.CI Fixes #68	2025-10-07 10:19:31 +02:00
Alexander Grund	17d77ef5bb	Disable multi-arch CI job	2025-10-06 17:22:47 +02:00
Alexander Grund	20afd07676	Pass char arrays instead of static_string instances to `testR` Avoid stack overflow in MSVC caused by huge amount of static_string instances Fixes #70	2025-10-06 17:22:47 +02:00
Alexander Grund	7f903ef7ce	Add cxx11_hdr_type_traits B2 requirement Avoid failures with GCC < 5	2025-10-06 17:22:47 +02:00
Alexander Grund	5dfbb1f2b1	CI: Disable coverage and coverity jobs	2025-10-06 17:22:47 +02:00
Arthur O'Dwyer	37a557d937	Make static_string trivially copyable	2025-10-03 18:42:10 +02:00
Alexander Grund	cd546285c4	CI: Don't test C++26/2c	2025-10-03 12:12:05 +02:00
Alexander Grund	645bf0a27d	Simplify `testTS` Replace boolean by check for defaulted nullptr	2025-10-03 12:12:05 +02:00
Alexander Grund	5067dfce5f	Use `BOOST_TEST_EQ` for `to_static_string` tests using floating point values	2025-10-03 12:12:05 +02:00
Alexander Grund	d37197d773	Add CMake subdir test for CI	2025-10-03 12:12:05 +02:00
Alexander Grund	a421cf742c	Switch to reusable GHA workflow Avoid the current failures due to outdated CI configs	2025-10-03 12:12:05 +02:00
Rene Rivera	7a53b7ff20	Move include to target.	2025-05-02 19:21:11 +03:00
Rene Rivera	24d62635a3	Put back whitespace.	2025-05-02 19:21:11 +03:00
Rene Rivera	a8f671ea1e	Attempt to fix GHA.	2025-05-02 19:21:11 +03:00
Rene Rivera	d677c9436c	Update build deps.	2025-05-02 19:21:11 +03:00
Rene Rivera	a3cc7bcf95	Move inter-lib dependencies to a project variable and into the build targets.	2025-05-02 19:21:11 +03:00
Rene Rivera	70578731e7	Update copyright dates.	2025-05-02 19:21:11 +03:00
Rene Rivera	3fb22ed769	Bump B2 require to 5.2	2025-05-02 19:21:11 +03:00
Rene Rivera	32824bfa1d	Add requires-b2 check to top-level build file.	2025-05-02 19:21:11 +03:00
Rene Rivera	f15a4d0586	Add missing import-search for cconfig/predef checks.	2025-05-02 19:21:11 +03:00
Rene Rivera	cd5bc51e9e	Replace relative docca refs with project based.	2025-05-02 19:21:11 +03:00
Rene Rivera	77d6a43dce	Switch to library requirements instead of source. As source puts extra source in install targets.	2025-05-02 19:21:11 +03:00
Rene Rivera	8f969a62f7	Make the library modular usable.	2025-05-02 19:21:11 +03:00
alandefreitas	bff5cb65a5	Boost super-project tests target fix #53	2024-02-20 13:53:27 -03:00
Krystian Stasiowski	42bb99ed25	support platforms without wchar_t closes #51	2023-10-24 14:22:30 -04:00
Krystian Stasiowski	175f467a03	select hash implementation with macros based on word size fixes #46	2023-05-29 11:30:18 -04:00
Krystian Stasiowski	6275cd7fe3	disable string_view overloads when type is convertible to basic_static_string fixes #47	2023-05-29 10:51:06 -04:00
alandefreitas	ac84c4f40e	string_view interoperability fix #26	2023-01-19 19:57:32 -03:00
alandefreitas	269987446e	check for char8_t directly fix #40	2023-01-18 22:10:36 -03:00
alandefreitas	82ff4e0679	static_string<0> does not memcpy fix #41	2023-01-18 22:09:45 -03:00
alandefreitas	9c3d5febe7	tests include main header	2023-01-18 22:09:31 -03:00
alandefreitas	0c914ff05b	fix noexcept-type warning	2022-11-04 10:34:09 -07:00
alandefreitas	bfce6eea90	fix unused-function warning	2022-11-03 22:48:35 -07:00
alandefreitas	ffce33d483	fix array-bounds warning	2022-11-03 14:12:02 -07:00
alandefreitas	c4f6491537	fix restrict warning	2022-11-02 15:46:33 -07:00
alandefreitas	25579e482f	update jamfile fix #24	2022-11-01 14:11:31 -07:00
alandefreitas	3e9489a7af	update CMakeLists.txt fix #4	2022-11-01 13:39:05 -07:00
sdarwin	7822f1b991	update CI fix #31, fix #20	2022-10-31 16:09:33 -07:00
Glen Fernandes	5d6fefdd2a	Protect against MSVC min and max macros	2022-04-16 11:49:23 -04:00
Dmitry Arkhipov	f92940bfab	Use Docca jam module	2021-10-25 07:37:10 -04:00
m-peko	c5df271a1a	Remove trailing spaces	2021-10-25 07:27:47 -04:00
Peter Dimov	6978da552e	Do not include test/CMakeLists.txt	2021-06-02 06:01:04 +03:00
Peter Dimov	e6895ea26b	Update CMakeLists.txt	2021-06-02 04:51:10 +03:00