Update build_cmake.yml, removing macOS build versions not supported by GitHub

Avoid GNU `getcwd` extension behavior

.appveyor.yml

@@ -1,13 +1,61 @@
-image: Visual Studio 2017
+environment:
+  matrix:
+    - platform: x86
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      generator: "Visual Studio 14 2015"
+      compiler: msvc
+      configuration: Release
 
-platform:
-  - Win32
-  - x64
+    - platform: x64
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      generator: "Visual Studio 14 2015 Win64"
+      compiler: msvc
+      configuration: Release
+
+    - platform: x86
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      generator: "Visual Studio 15 2017"
+      compiler: msvc
+      configuration: Release
+
+    - platform: x64
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      generator: "Visual Studio 15 2017 Win64"
+      compiler: msvc
+      configuration: Release
+
+    - platform: x86
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      generator: "Visual Studio 16 2019"
+      compiler: msvc19
+      configuration: Release
+      arch: Win32
+
+    - platform: x64
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      generator: "Visual Studio 16 2019"
+      compiler: msvc19
+      configuration: Release
+      arch: x64
+
+    - platform: x86
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      generator: "MinGW Makefiles"
+      compiler: mingw
+      TOOLCHAIN_PATH: C:\mingw-w64\i686-6.3.0-posix-dwarf-rt_v5-rev1/mingw32\bin
+      CC: C:/mingw-w64/i686-6.3.0-posix-dwarf-rt_v5-rev1/mingw32/bin/gcc.exe
+      CXX: C:/mingw-w64/i686-6.3.0-posix-dwarf-rt_v5-rev1/mingw32/bin/g++.exe
+      configuration: Release
+
+    - platform: x64
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      generator: "MinGW Makefiles"
+      compiler: mingw
+      TOOLCHAIN_PATH: C:\mingw-w64\x86_64-7.2.0-posix-seh-rt_v5-rev1\mingw64\bin
+      CC: C:/mingw-w64/x86_64-7.2.0-posix-seh-rt_v5-rev1/mingw64/bin/gcc.exe
+      CXX: C:/mingw-w64/x86_64-7.2.0-posix-seh-rt_v5-rev1/mingw64/bin/g++.exe
+      configuration: Release
 
-configuration:
-  - Debug
-  - Release
-  
 matrix:
   fast_finish: false
 
@@ -17,18 +65,21 @@ init:
 
 install:
   - cmd: reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModelUnlock" /t REG_DWORD /f /v "AllowDevelopmentWithoutDevLicense" /d "1"
+  - cmd: ren "C:\Program Files\Git\usr\bin\sh.exe" _sh.exe
 
-before_build:
-  - cmake . -Bbuild -A%PLATFORM% -DCMAKE_BUILD_TYPE=%configuration%
-
-build:
-  project: build/ghcfilesystem.sln
-  parallel: true
-  verbosity: minimal
+build_script:
+  - mkdir build
+  - cd build
+  - if [%compiler%]==[msvc] cmake -G"%generator%" ..
+  - if [%compiler%]==[msvc19] cmake -G"%generator%" -A "%arch%" ..
+  - if [%compiler%]==[mingw] set PATH=%TOOLCHAIN_PATH%;%PATH%
+  - if [%compiler%]==[mingw] cmake -G"%generator%" -DCMAKE_C_COMPILER=%CC% -DCMAKE_CXX_COMPILER=%CXX% -DCMAKE_SH=CMAKE_SH-NOTFOUND -DCMAKE_BUILD_TYPE=%configuration% ..
+  - cmake --build . --config %configuration%
   
 test_script:
-  - cd build
+  - cd %APPVEYOR_BUILD_FOLDER%\build
   - set CTEST_OUTPUT_ON_FAILURE=1
   - ctest -C %configuration% 
+  - if exist "test\Release\std_filesystem_test.exe" test\Release\std_filesystem_test.exe & exit 0
   - cd ..
 

.ci/unix-build.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+mkdir build && cd build
+cmake -DCMAKE_BUILD_TYPE=Release ..
+cmake --build .

.ci/unix-test.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+cd build
+echo "Tests run as user: $USER"
+ctest -E Windows
+if [ -f "test/std_filesystem_test" ]; then
+  test/std_filesystem_test || true
+fi

.cirrus.yml

@@ -0,0 +1,34 @@
+freebsd_task:
+  freebsd_instance:
+    image_family: freebsd-14-0
+  install_script: |
+    pkg install -y cmake
+    pw groupadd testgrp
+    pw useradd testuser -g testgrp -w none -m
+    chown -R testuser:testgrp .
+  build_script: |
+    sudo -u testuser .ci/unix-build.sh
+  test_script: |
+    sudo -u testuser .ci/unix-test.sh
+
+rockylinux8_task:
+  container:
+    image: docker.io/rockylinux:8
+  install_script: |
+    dnf group install -y "Development Tools"
+    dnf install cmake -y
+  build_script: |
+    .ci/unix-build.sh
+  test_script: |
+    .ci/unix-test.sh
+
+rockylinux9_task:
+  container:
+    image: docker.io/rockylinux:9
+  install_script: |
+    dnf group install -y "Development Tools"
+    dnf install cmake -y
+  build_script: |
+    .ci/unix-build.sh
+  test_script: |
+    .ci/unix-test.sh

.clang-format

@@ -21,5 +21,5 @@ BraceWrapping:
   SplitEmptyNamespace: true
 BreakConstructorInitializers: BeforeComma
 ConstructorInitializerAllOnOneLineOrOnePerLine: false
-
+IndentPPDirectives: None
 ...

.clang-tidy

@@ -0,0 +1,3 @@
+---
+Checks: -modernize-use-nodiscard
+...

.drone.yml-disabled

@@ -0,0 +1,43 @@
+kind: pipeline
+name: arm
+
+platform:
+  os: linux
+  arch: arm
+
+steps:
+- name: build
+  image: alpine
+  failure: ignore
+  commands:
+  - apk update
+  - apk add --no-cache build-base cmake sudo
+  - addgroup testgrp
+  - adduser --disabled-password testuser testgrp
+  - passwd testuser -u -d
+  - chown -R testuser:testgrp .
+  - sudo -u testuser .ci/unix-build.sh
+  - sudo -u testuser .ci/unix-test.sh
+
+---
+
+kind: pipeline
+name: arm64
+
+platform:
+  os: linux
+  arch: arm64
+
+steps:
+- name: build
+  image: alpine
+  failure: ignore
+  commands:
+  - apk update
+  - apk add --no-cache build-base cmake
+  - addgroup testgrp
+  - adduser --disabled-password testuser testgrp
+  - passwd testuser -u -d
+  - chown -R testuser:testgrp .
+  - su -c "./.ci/unix-build.sh" testuser
+  - su -c "./.ci/unix-test.sh" testuser

.github/workflows/build_cmake.yml

@@ -0,0 +1,170 @@
+name: CMake Build Matrix
+
+on: [ push, pull_request ]
+
+jobs:
+  build:
+    name: ${{ matrix.config.name }}
+    runs-on: ${{ matrix.config.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - name: "Ubuntu 22.04 GCC 11"
+            os: ubuntu-22.04
+            build_type: Release
+            packages: ninja-build
+            generator: Ninja
+            compatibility: "cxx_std_11;cxx_std_17;cxx_std_20"
+            cc: gcc
+            cxx: g++
+
+          - name: "Ubuntu 22.04 Clang 13.0"
+            os: ubuntu-22.04
+            build_type: Release
+            packages: ninja-build libc++-13-dev libc++abi-13-dev
+            generator: Ninja
+            compatibility: "cxx_std_11;cxx_std_17;cxx_std_20"
+            cc: clang-13
+            cxx: clang++-13
+
+          - name: "Ubuntu 22.04 Clang 15.0"
+            os: ubuntu-22.04
+            build_type: Release
+            packages: ninja-build libc++-15-dev libc++abi-15-dev
+            generator: Ninja
+            compatibility: "cxx_std_11;cxx_std_17;cxx_std_20"
+            cc: clang-15
+            cxx: clang++-15
+
+          - name: "Ubuntu 22.04 GCC 11 coverage"
+            os: ubuntu-22.04
+            build_type: Debug
+            packages: ninja-build lcov
+            generator: Ninja
+            compatibility: "cxx_std_11;cxx_std_17;cxx_std_20"
+            cc: gcc
+            cxx: g++
+
+          - name: "Ubuntu 20.04 GCC 9.3"
+            os: ubuntu-20.04
+            build_type: Release
+            packages: ninja-build
+            generator: Ninja
+            compatibility: "cxx_std_11;cxx_std_17;cxx_std_20"
+            cc: gcc
+            cxx: g++
+
+          - name: "Ubuntu 20.04 Clang 10.0"
+            os: ubuntu-20.04
+            build_type: Release
+            packages: ninja-build
+            generator: Ninja
+            compatibility: "cxx_std_11;cxx_std_17;cxx_std_20"
+            cc: clang-10
+            cxx: clang++-10
+
+          - name: "Ubuntu 20.04 Clang 11.0"
+            os: ubuntu-20.04
+            build_type: Release
+            packages: ninja-build clang-11 libc++-11-dev libc++abi-11-dev
+            generator: Ninja
+            compatibility: "cxx_std_11;cxx_std_17;cxx_std_20"
+            cc: clang-11
+            cxx: clang++-11
+
+          - name: "Ubuntu 20.04 GCC 9.3 coverage"
+            os: ubuntu-20.04
+            build_type: Debug
+            packages: ninja-build lcov
+            generator: Ninja
+            compatibility: "cxx_std_11;cxx_std_17;cxx_std_20"
+            cc: gcc
+            cxx: g++
+
+          - name: "Windows MSVC 2019"
+            os: windows-2019
+            build_type: Release
+            packages: ninja
+            generator: "Visual Studio 16 2019"
+            compatibility: "cxx_std_11;cxx_std_17;cxx_std_20"
+            cc: cl
+            cxx: cl
+
+          - name: "macOS 13 AppleClang"
+            os: macos-13
+            build_type: Release
+            packages: ninja
+            generator: Ninja
+            compatibility: "cxx_std_11;cxx_std_17;cxx_std_20"
+            cc: clang
+            cxx: clang++
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: print environment
+        run: |
+          echo github.event.action: ${{ github.event.action }}
+          echo github.event_name: ${{ github.event_name }}
+
+      - name: Install dependencies on Ubuntu
+        if: startsWith(matrix.config.os, 'ubuntu')
+        shell: bash
+        run: |
+          sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y
+          sudo apt update
+          sudo apt install ${{ matrix.config.packages }}
+
+      - name: Install dependencies on windows
+        if: startsWith(matrix.config.os, 'windows')
+        run: |
+          choco install ${{ matrix.config.packages }}
+
+      - name: Install dependencies on macOS
+        if: startsWith(matrix.config.os, 'macos')
+        run: |
+          brew install ${{ matrix.config.packages }}
+
+      - name: Configure project
+        shell: bash
+        run: |
+          export CC=${{ matrix.config.cc }}
+          export CXX=${{ matrix.config.cxx }}
+          ninja --version
+          cmake --version
+          mkdir build
+          mkdir install
+          if [[ "${{ matrix.config.build_type }}" == "Debug" ]]; then
+            cmake -G "${{ matrix.config.generator }}" -S . -B build -DCMAKE_BUILD_TYPE=Debug -DGHC_COVERAGE=ON -DGHC_FILESYSTEM_TEST_COMPILE_FEATURES="${{ matrix.config.compatibility }}" -DCMAKE_INSTALL_PREFIX:PATH=install
+          else
+            cmake -G "${{ matrix.config.generator }}" -S . -B build -DCMAKE_BUILD_TYPE=${{ matrix.config.build_type }} -DGHC_FILESYSTEM_TEST_COMPILE_FEATURES="${{ matrix.config.compatibility }}" -DCMAKE_INSTALL_PREFIX:PATH=install
+          fi
+
+      - name: Build project
+        shell: bash
+        run: |
+          cmake --build build --config ${{ matrix.config.build_type }}
+
+      - name: Run tests
+        run: |
+          cd build && ctest -C ${{ matrix.config.build_type }}
+
+      - name: Collect coverage info
+        if: startsWith(matrix.config.build_type, 'Debug')
+        run: |
+          cd build
+          lcov --compat-libtool --directory . --capture --output-file coverage_output.info
+          lcov --remove coverage_output.info '/usr/*' '*/c++/*' '*.h' '*/catch.hpp' -o coverage.info
+          # sed -i 's|SF:/.*/filesystem/|SF:../|g' coverage.info
+
+      - name: Upload coverage info
+        if: startsWith(matrix.config.build_type, 'Debug')
+        env:
+          COVERALLS_DEBUG: true
+          NODE_COVERALLS_DEBUG: 1
+        uses: coverallsapp/github-action@master
+        with:
+          path-to-lcov: ${{ github.workspace }}/build/coverage.info
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+

.gitignore

@@ -1 +1,7 @@
-/build*/
+/*build*/
+.vs/
+.vscode/
+.idea/
+*.swp
+*~
+.DS_Store

.travis.yml

@@ -1,60 +0,0 @@
-language: cpp
-
-dist: xenial # default distribution
-os: linux # default os
-sudo: false
-
-
-matrix:
-  fast_finish: true
-  include:
-    - env: MATRIX_EVAL="CC=gcc-5 && CXX=g++-5 && GENERATOR='Unix Makefiles'"
-      addons: { apt: { packages: ["g++-5"], sources: ["ubuntu-toolchain-r-test"] } }
-
-    - env: MATRIX_EVAL="CC=gcc-6 && CXX=g++-6 && GENERATOR='Unix Makefiles'"
-      addons: { apt: { packages: ["g++-6"], sources: ["ubuntu-toolchain-r-test"] } }
-
-    - env: MATRIX_EVAL="CC=gcc-7 && CXX=g++-7 && GENERATOR='Unix Makefiles'"
-      addons: { apt: { packages: ["g++-7"], sources: ["ubuntu-toolchain-r-test"] } }
-
-    - env: MATRIX_EVAL="CC=gcc-8 && CXX=g++-8 && GENERATOR='Unix Makefiles'"
-      addons: { apt: { packages: ["g++-8"], sources: ["ubuntu-toolchain-r-test"] } }
-
-    - env: MATRIX_EVAL="CC=clang-5.0 && CXX=clang++-5.0 && GENERATOR='Unix Makefiles'"
-      addons: { apt: { packages: ["clang-5.0"] } }
-
-    - env: MATRIX_EVAL="CC=clang-6.0 && CXX=clang++-6.0 && GENERATOR='Unix Makefiles'"
-      addons: { apt: { packages: ["clang-6.0"] } }
-
-    - env: MATRIX_EVAL="CC=clang-7 && CXX=clang++-7 && GENERATOR='Unix Makefiles'"
-      addons: { apt: { packages: ["clang-7", "libc++-7-dev", "libc++abi-7-dev"], sources: ["llvm-toolchain-xenial-7"] } }
-
-    - env: MATRIX_EVAL="CC=clang-8 && CXX=clang++-8 && GENERATOR='Unix Makefiles'"
-      addons: { apt: { packages: ["clang-8", "libc++-8-dev", "libc++abi-8-dev"], sources: ["llvm-toolchain-xenial-8"] } }
-
-    - os: osx
-      env: MATRIX_EVAL="CC=clang && CXX=clang++ && GENERATOR=Xcode"
-      osx_image: xcode9.2
-  
-install:
-  - eval "${MATRIX_EVAL}"
-  - |
-    if [ "${TRAVIS_OS_NAME}" = "osx" ]; then
-      brew update
-      brew upgrade cmake
-    fi
-  - $CC --version
-  - $CXX --version
-  - cmake --version
-
-before_script:
-  - mkdir build
-  - cd build
-  - export VERBOSE=1
-  - cmake -G"${GENERATOR}" -DCMAKE_CXX_COMPILER=${CXX} -DCMAKE_C_COMPILER=${CC} ..
-
-script:
-  - export VERBOSE=1
-  - cmake --build . --config Release
-  - ctest -C Release -E Windows
-

CMakeLists.txt

@@ -1,31 +1,90 @@
-cmake_minimum_required(VERSION 3.9)
-project(ghcfilesystem)
+cmake_minimum_required(VERSION 3.7.2)
+project(
+   ghcfilesystem,
+   VERSION 1.5.15
+)
+
+if (POLICY CMP0077)
+    cmake_policy(SET CMP0077 NEW)
+endif()
+if(POLICY CMP0110)
+    cmake_policy(SET CMP0110 NEW)
+endif()
+
+if(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
+    option(GHC_FILESYSTEM_BUILD_TESTING "Enable tests" ON)
+    option(GHC_FILESYSTEM_BUILD_EXAMPLES "Build examples" ON)
+    option(GHC_FILESYSTEM_WITH_INSTALL "With install target" ON)
+else()
+    option(GHC_FILESYSTEM_BUILD_EXAMPLES "Build examples" OFF)
+    option(GHC_FILESYSTEM_BUILD_TESTING "Enable tests" OFF)
+    option(GHC_FILESYSTEM_WITH_INSTALL "With install target" OFF)
+endif()
+option(GHC_FILESYSTEM_BUILD_STD_TESTING "Enable STD tests" ${GHC_FILESYSTEM_BUILD_TESTING})
+if(NOT DEFINED GHC_FILESYSTEM_TEST_COMPILE_FEATURES)
+    set(GHC_FILESYSTEM_TEST_COMPILE_FEATURES ${CMAKE_CXX_COMPILE_FEATURES})
+endif()
 
 if(NOT DEFINED CMAKE_CXX_STANDARD)
     set(CMAKE_CXX_STANDARD 11)
     set(CMAKE_CXX_STANDARD_REQUIRED ON)
-    set(CMAKE_CXX_EXTENSIONS OFF)
+    if(NOT CYGWIN)
+        set(CMAKE_CXX_EXTENSIONS OFF)
+    endif()
 endif()
 if(CMAKE_CXX_STANDARD LESS 11)
     message(FATAL_ERROR "CMAKE_CXX_STANDARD is less than 11, ghc::filesystem only works with C++11 and above.")
 endif()
+if(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
+    message(STATUS "System name: ${CMAKE_SYSTEM_NAME}")
+    message(STATUS "Compiler ID: ${CMAKE_CXX_COMPILER_ID}")
+    message(STATUS "CMAKE_CXX_COMPILE_FEATURES: ${CMAKE_CXX_COMPILE_FEATURES}")
+endif()
 
 add_library(ghc_filesystem INTERFACE)
-target_sources(ghc_filesystem INTERFACE
-    ${CMAKE_CURRENT_SOURCE_DIR}/include/ghc/filesystem.hpp
-    ${CMAKE_CURRENT_SOURCE_DIR}/include/ghc/fs_fwd.hpp
-    ${CMAKE_CURRENT_SOURCE_DIR}/include/ghc/fs_impl.hpp
-    ${CMAKE_CURRENT_SOURCE_DIR}/include/ghc/fs_std.hpp
-    ${CMAKE_CURRENT_SOURCE_DIR}/include/ghc/fs_std_fwd.hpp
-    ${CMAKE_CURRENT_SOURCE_DIR}/include/ghc/fs_std_impl.hpp
-)
-target_include_directories(ghc_filesystem INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/include)
+add_library(ghcFilesystem::ghc_filesystem ALIAS ghc_filesystem)
+target_include_directories(ghc_filesystem INTERFACE
+    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+    $<INSTALL_INTERFACE:include>)
 target_compile_options(ghc_filesystem INTERFACE "$<$<C_COMPILER_ID:MSVC>:/utf-8>")
 target_compile_options(ghc_filesystem INTERFACE "$<$<CXX_COMPILER_ID:MSVC>:/utf-8>")
 
-get_directory_property(hasParent PARENT_DIRECTORY)
-if(NOT hasParent)
-  enable_testing()
-  add_subdirectory(test)
-  add_subdirectory(examples)
+if(GHC_FILESYSTEM_BUILD_TESTING OR GHC_FILESYSTEM_BUILD_EXAMPLES)
+    set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
+    set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/")
+    include(GhcHelper)
+
+    if(GHC_FILESYSTEM_BUILD_TESTING)
+        enable_testing()
+        add_subdirectory(test)
+    endif()
+
+    if(GHC_FILESYSTEM_BUILD_EXAMPLES)
+        add_subdirectory(examples)
+    endif()
+endif()
+
+if(GHC_FILESYSTEM_WITH_INSTALL)
+    include(CMakePackageConfigHelpers)
+    include(GNUInstallDirs)
+    install(DIRECTORY include/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+    install(TARGETS ghc_filesystem EXPORT ghc_filesystem-targets)
+    install(EXPORT ghc_filesystem-targets NAMESPACE ghcFilesystem:: DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/ghc_filesystem")
+    export(EXPORT ghc_filesystem-targets NAMESPACE ghcFilesystem:: FILE "${CMAKE_CURRENT_BINARY_DIR}/cmake/ghc_filesystem-targets.cmake")
+    configure_package_config_file(
+        "${CMAKE_CURRENT_SOURCE_DIR}/cmake/config.cmake.in"
+        "${PROJECT_BINARY_DIR}/cmake/ghc_filesystem-config.cmake"
+        INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/ghc_filesystem"
+        PATH_VARS CMAKE_INSTALL_INCLUDEDIR)
+    write_basic_package_version_file(
+        "${PROJECT_BINARY_DIR}/cmake/ghc_filesystem-config-version.cmake"
+        VERSION ${PROJECT_VERSION}
+        COMPATIBILITY SameMinorVersion
+    )
+    install(
+        FILES
+            "${PROJECT_BINARY_DIR}/cmake/ghc_filesystem-config.cmake"
+            "${PROJECT_BINARY_DIR}/cmake/ghc_filesystem-config-version.cmake"
+        DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/ghc_filesystem"
+    )
 endif()

LICENSE

@@ -1,27 +1,19 @@
 Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com>
-All rights reserved.
 
-Redistribution and use in source and binary forms, with or without modification,
-are permitted provided that the following conditions are met:
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
-1. Redistributions of source code must retain the above copyright notice, this
-   list of conditions and the following disclaimer.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
 
-2. Redistributions in binary form must reproduce the above copyright notice,
-   this list of conditions and the following disclaimer in the documentation
-   and/or other materials provided with the distribution.
-
-3. Neither the name of the copyright holder nor the names of its contributors
-   may be used to endorse or promote products derived from this software without
-   specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

cmake/GhcHelper.cmake

@@ -0,0 +1,81 @@
+macro(AddExecutableWithStdFS targetName)
+if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" AND (CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 7.0 OR CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 7.0))
+    if(APPLE)
+        include_directories(/usr/local/opt/llvm/include)
+        link_directories(/usr/local/opt/llvm/lib)
+    endif()
+    add_executable(${targetName} ${ARGN})
+    set_property(TARGET ${targetName} PROPERTY CXX_STANDARD 17)
+    if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.0)
+        if(APPLE)
+            target_link_libraries(${targetName} -lc++fs)
+        else()
+            target_compile_options(${targetName} PRIVATE "-stdlib=libc++")
+            target_link_libraries(${targetName} -stdlib=libc++ -lc++fs $<$<PLATFORM_ID:Linux>:rt>)
+        endif()
+    else()
+        if(NOT APPLE)
+            target_compile_options(${targetName} PRIVATE "-stdlib=libc++")
+            target_link_libraries(${targetName} -stdlib=libc++)
+        endif()
+    endif()
+    if(${CMAKE_SYSTEM_NAME} MATCHES "(SunOS|Solaris)")
+        target_link_libraries(filesystem_test xnet)
+    endif()
+    if(${CMAKE_SYSTEM_NAME} MATCHES "Haiku")
+        target_link_libraries(filesystem_test network)
+    endif()
+    target_compile_definitions(${targetName} PRIVATE USE_STD_FS)
+endif()
+
+if (CMAKE_COMPILER_IS_GNUCXX AND (CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 8.0 OR CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 8.0))
+    add_executable(${targetName} ${ARGN})
+    set_property(TARGET ${targetName} PROPERTY CXX_STANDARD 17)
+    if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.0)
+        target_link_libraries(${targetName} -lstdc++fs)
+    endif()
+    if(${CMAKE_SYSTEM_NAME} MATCHES "(SunOS|Solaris)")
+        target_link_libraries(${targetName} xnet)
+    endif()
+    if(${CMAKE_SYSTEM_NAME} MATCHES "Haiku")
+        target_link_libraries(${targetName} network)
+    endif()
+    target_compile_options(${targetName} PRIVATE $<$<BOOL:${CYGWIN}>:-Wa,-mbig-obj>)
+    target_compile_definitions(${targetName} PRIVATE USE_STD_FS)
+endif()
+
+if(CMAKE_CXX_COMPILER_ID MATCHES MSVC AND (CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 19.15 OR CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 19.15))
+    add_executable(${targetName} ${ARGN})
+    set_property(TARGET ${targetName} PROPERTY CXX_STANDARD 17)
+    set_property(TARGET ${targetName} PROPERTY CXX_STANDARD_REQUIRED ON)
+    target_compile_options(${targetName} PRIVATE "/Zc:__cplusplus")
+    target_compile_definitions(${targetName} PRIVATE USE_STD_FS _CRT_SECURE_NO_WARNINGS)
+endif()
+
+endmacro()
+
+macro(AddTestExecutableWithStdCpp cppStd)
+    add_executable(filesystem_test_cpp${cppStd} ${ARGN})
+    set_property(TARGET filesystem_test_cpp${cppStd} PROPERTY CXX_STANDARD ${cppStd})
+    target_link_libraries(filesystem_test_cpp${cppStd} ghc_filesystem)
+    if(${CMAKE_SYSTEM_NAME} MATCHES "(SunOS|Solaris)")
+        target_link_libraries(filesystem_test_cpp${cppStd} xnet)
+    endif()
+    if(${CMAKE_SYSTEM_NAME} MATCHES "Haiku")
+        target_link_libraries(filesystem_test_cpp${cppStd} network)
+    endif()
+    target_compile_options(filesystem_test_cpp${cppStd} PRIVATE
+            $<$<BOOL:${EMSCRIPTEN}>:-s DISABLE_EXCEPTION_CATCHING=0>
+            $<$<OR:$<CXX_COMPILER_ID:Clang>,$<CXX_COMPILER_ID:AppleClang>>:-Wall -Wextra -Wshadow -Wconversion -Wsign-conversion -Wpedantic -Werror -Wno-error=deprecated-declarations>
+            $<$<CXX_COMPILER_ID:GNU>:-Wall -Wextra -Wshadow -Wconversion -Wsign-conversion -Wpedantic -Wno-psabi -Werror -Wno-error=deprecated-declarations>
+            $<$<CXX_COMPILER_ID:MSVC>:/WX /wd4996>
+            $<$<BOOL:${CYGWIN}>:-Wa,-mbig-obj>
+            $<$<BOOL:${GHC_COVERAGE}>:--coverage>)
+    if(CMAKE_CXX_COMPILER_ID MATCHES MSVC)
+        target_compile_definitions(filesystem_test_cpp${cppStd} PRIVATE _CRT_SECURE_NO_WARNINGS)
+    endif()
+    if(EMSCRIPTEN)
+        set_target_properties(filesystem_test_cpp${cppStd} PROPERTIES LINK_FLAGS "-g4 -s DISABLE_EXCEPTION_CATCHING=0 -s ALLOW_MEMORY_GROWTH=1")
+    endif()
+    ParseAndAddCatchTests(filesystem_test_cpp${cppStd})
+endmacro()

cmake/config.cmake.in

@@ -0,0 +1,6 @@
+@PACKAGE_INIT@
+
+# import targets
+include("${CMAKE_CURRENT_LIST_DIR}/ghc_filesystem-targets.cmake")
+
+check_required_components(ghcfilesystem)

examples/CMakeLists.txt

@@ -4,34 +4,14 @@ target_link_libraries(fs_dir ghc_filesystem)
 if(CMAKE_CXX_COMPILER_ID MATCHES MSVC)
     target_compile_definitions(fs_dir PRIVATE _CRT_SECURE_NO_WARNINGS)
 endif()
+AddExecutableWithStdFS(std_fs_dir dir.cpp)
 
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" AND (CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 7.0 OR CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 7.0))
-    if(APPLE)
-        include_directories(/usr/local/opt/llvm/include)
-        link_directories(/usr/local/opt/llvm/lib)
-    endif()
-    add_executable(std_fs_dir dir.cpp)
-    set_property(TARGET std_fs_dir PROPERTY CXX_STANDARD 17)
-    if(APPLE)
-        target_link_libraries(std_fs_dir -lc++fs)
-    else()
-        target_compile_options(std_fs_dir PRIVATE "-stdlib=libc++")
-        target_link_libraries(std_fs_dir -stdlib=libc++ -lc++fs)
-    endif()
+add_executable(fs_du du.cpp)
+target_link_libraries(fs_du ghc_filesystem)
+AddExecutableWithStdFS(std_fs_du du.cpp)
 
-    target_link_libraries(std_fs_dir -lc++fs)
-endif()
-
-if (CMAKE_COMPILER_IS_GNUCXX AND (CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 8.0 OR CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 8.0))
-    add_executable(std_fs_dir dir.cpp)
-    set_property(TARGET std_fs_dir PROPERTY CXX_STANDARD 17)
-    target_link_libraries(std_fs_dir -lstdc++fs)
-endif()
-
-if(CMAKE_CXX_COMPILER_ID MATCHES MSVC AND (CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 19.15 OR CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 19.15))
-    add_executable(std_fs_dir dir.cpp)
-    set_property(TARGET std_fs_dir PROPERTY CXX_STANDARD 17)
-    set_property(TARGET std_fs_dir PROPERTY CXX_STANDARD_REQUIRED ON)
-    target_compile_options(std_fs_dir PRIVATE "/Zc:__cplusplus")
-    target_compile_definitions(std_fs_dir PRIVATE _CRT_SECURE_NO_WARNINGS)
-endif()
+if(EXISTS "${PROJECT_SOURCE_DIR}/examples/benchmark.cpp")
+    add_executable(fs_benchmark benchmark.cpp)
+    set_property(TARGET fs_benchmark PROPERTY CXX_STANDARD 17)
+    target_link_libraries(fs_benchmark ghc_filesystem)
+endif()

examples/dir.cpp

@@ -1,16 +1,21 @@
-#include <iostream>
-#include <iomanip>
 #include <chrono>
+#include <iomanip>
+#include <iostream>
+#include <string>
 
-#if defined(__cplusplus) && __cplusplus >= 201703L && defined(__has_include) && __has_include(<filesystem>)
+#if defined(__cplusplus) && __cplusplus >= 201703L && defined(__has_include)
+#if __has_include(<filesystem>)
+#define GHC_USE_STD_FS
 #include <filesystem>
 namespace fs = std::filesystem;
-#else
+#endif
+#endif
+#ifndef GHC_USE_STD_FS
 #include <ghc/filesystem.hpp>
 namespace fs = ghc::filesystem;
 #endif
 
-template<typename TP>
+template <typename TP>
 std::time_t to_time_t(TP tp)
 {
     // Based on trick from: Nico Josuttis, C++17 - The Complete Guide
@@ -22,8 +27,8 @@ static std::string perm_to_str(fs::perms prms)
 {
     std::string result;
     result.reserve(9);
-    for(int i = 0; i < 9; ++i) {
-        result = ((static_cast<int>(prms) & (1<<i)) ? "xwrxwrxwr"[i] : '-') + result;
+    for (int i = 0; i < 9; ++i) {
+        result = ((static_cast<int>(prms) & (1 << i)) ? "xwrxwrxwr"[i] : '-') + result;
     }
     return result;
 }
@@ -32,27 +37,24 @@ int main(int argc, char* argv[])
 {
 #ifdef GHC_FILESYSTEM_VERSION
     fs::u8arguments u8guard(argc, argv);
-    if(!u8guard.valid()) {
+    if (!u8guard.valid()) {
         std::cerr << "Invalid character encoding, UTF-8 based encoding needed." << std::endl;
         std::exit(EXIT_FAILURE);
     }
 #endif
-    if(argc > 2) {
+    if (argc > 2) {
         std::cerr << "USAGE: dir <path>" << std::endl;
         exit(1);
     }
     fs::path dir{"."};
-    if(argc == 2) {
+    if (argc == 2) {
         dir = fs::u8path(argv[1]);
     }
-    for(auto de : fs::directory_iterator(dir)) {
+    for (auto de : fs::directory_iterator(dir)) {
         auto ft = to_time_t(de.last_write_time());
         auto ftm = *std::localtime(&ft);
-        std::cout << (de.is_directory() ? "d" : "-") << perm_to_str(de.symlink_status().permissions()) << "  "
-                  << std::setw(8) << (de.is_directory() ? "-" : std::to_string(de.file_size())) << "  "
-                  << std::put_time(&ftm, "%Y-%m-%d %H:%M:%S") << "  "
-                  << de.path().filename().string() 
-                  << std::endl;
+        std::cout << (de.is_directory() ? "d" : "-") << perm_to_str(de.symlink_status().permissions()) << "  " << std::setw(8) << (de.is_directory() ? "-" : std::to_string(de.file_size())) << "  " << std::put_time(&ftm, "%Y-%m-%d %H:%M:%S") << "  "
+                  << de.path().filename().string() << std::endl;
     }
     return 0;
 }

examples/du.cpp

@@ -0,0 +1,61 @@
+#include <iostream>
+#include <iomanip>
+#include <chrono>
+
+#if defined(__cplusplus) && __cplusplus >= 201703L && defined(__has_include)
+#if __has_include(<filesystem>)
+#define GHC_USE_STD_FS
+#include <filesystem>
+namespace fs = std::filesystem;
+#endif
+#endif
+#ifndef GHC_USE_STD_FS
+#include <ghc/filesystem.hpp>
+namespace fs = ghc::filesystem;
+#endif
+
+int main(int argc, char* argv[])
+{
+#ifdef GHC_FILESYSTEM_VERSION
+    fs::u8arguments u8guard(argc, argv);
+    if(!u8guard.valid()) {
+        std::cerr << "Invalid character encoding, UTF-8 based encoding needed." << std::endl;
+        std::exit(EXIT_FAILURE);
+    }
+#endif
+    if(argc > 2) {
+        std::cerr << "USAGE: du <path>" << std::endl;
+        exit(1);
+    }
+    fs::path dir{"."};
+    if(argc == 2) {
+        dir = fs::u8path(argv[1]);
+    }
+
+    uint64_t totalSize = 0;
+    int totalDirs = 0;
+    int totalFiles = 0;
+    int maxDepth = 0;
+    
+    try {
+        auto rdi = fs::recursive_directory_iterator(dir);
+        for(auto de : rdi) {
+            if(rdi.depth() > maxDepth) {
+                maxDepth = rdi.depth();
+            }
+            if(de.is_regular_file()) {
+                totalSize += de.file_size();
+                ++totalFiles;
+            }
+            else if(de.is_directory()) {
+                ++totalDirs;
+            }
+        }
+    }
+    catch(fs::filesystem_error fe) {
+        std::cerr << "Error: " << fe.what() << std::endl;
+        exit(1);
+    }
+    std::cout << totalSize << " bytes in " << totalFiles << " files and " << totalDirs << " directories, maximum depth: " << maxDepth << std::endl;
+    return 0;
+}

include/ghc/fs_fwd.hpp

@@ -5,35 +5,27 @@
 //---------------------------------------------------------------------------------------
 //
 // Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com>
-// All rights reserved.
 //
-// Redistribution and use in source and binary forms, with or without modification,
-// are permitted provided that the following conditions are met:
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
 //
-// 1. Redistributions of source code must retain the above copyright notice, this
-//    list of conditions and the following disclaimer.
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
 //
-// 2. Redistributions in binary form must reproduce the above copyright notice,
-//    this list of conditions and the following disclaimer in the documentation
-//    and/or other materials provided with the distribution.
-//
-// 3. Neither the name of the copyright holder nor the names of its contributors
-//    may be used to endorse or promote products derived from this software without
-//    specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
 //
 //---------------------------------------------------------------------------------------
-// fs_fwd.hpp - The forwarding header for the header/implementation seperated usage of
+// fs_fwd.hpp - The forwarding header for the header/implementation separated usage of
 //              ghc::filesystem.
 // This file can be include at any place, where ghc::filesystem api is needed while
 // not bleeding implementation details (e.g. system includes) into the global namespace,
@@ -42,5 +34,5 @@
 #ifndef GHC_FILESYSTEM_FWD_H
 #define GHC_FILESYSTEM_FWD_H
 #define GHC_FILESYSTEM_FWD
-#include <ghc/filesystem.hpp>
+#include "filesystem.hpp"
 #endif // GHC_FILESYSTEM_FWD_H

include/ghc/fs_impl.hpp

@@ -5,39 +5,31 @@
 //---------------------------------------------------------------------------------------
 //
 // Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com>
-// All rights reserved.
 //
-// Redistribution and use in source and binary forms, with or without modification,
-// are permitted provided that the following conditions are met:
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
 //
-// 1. Redistributions of source code must retain the above copyright notice, this
-//    list of conditions and the following disclaimer.
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
 //
-// 2. Redistributions in binary form must reproduce the above copyright notice,
-//    this list of conditions and the following disclaimer in the documentation
-//    and/or other materials provided with the distribution.
-//
-// 3. Neither the name of the copyright holder nor the names of its contributors
-//    may be used to endorse or promote products derived from this software without
-//    specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
 //
 //---------------------------------------------------------------------------------------
-// fs_impl.hpp - The implementation header for the header/implementation seperated usage of
+// fs_impl.hpp - The implementation header for the header/implementation separated usage of
 //               ghc::filesystem.
 // This file can be used to hide the implementation of ghc::filesystem into a single cpp.
 // The cpp has to include this before including fs_fwd.hpp directly or via a different
 // header to work.
 //---------------------------------------------------------------------------------------
 #define GHC_FILESYSTEM_IMPLEMENTATION
-#include <ghc/filesystem.hpp>
+#include "filesystem.hpp"

include/ghc/fs_std.hpp

@@ -5,55 +5,73 @@
 //---------------------------------------------------------------------------------------
 //
 // Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com>
-// All rights reserved.
 //
-// Redistribution and use in source and binary forms, with or without modification,
-// are permitted provided that the following conditions are met:
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
 //
-// 1. Redistributions of source code must retain the above copyright notice, this
-//    list of conditions and the following disclaimer.
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
 //
-// 2. Redistributions in binary form must reproduce the above copyright notice,
-//    this list of conditions and the following disclaimer in the documentation
-//    and/or other materials provided with the distribution.
-//
-// 3. Neither the name of the copyright holder nor the names of its contributors
-//    may be used to endorse or promote products derived from this software without
-//    specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
 //
 //---------------------------------------------------------------------------------------
-// fs_std.hpp - The dynamic switching header for that includes std::filesystem if detected
+// fs_std.hpp - The dynamic switching header that includes std::filesystem if detected
 //              or ghc::filesystem if not, and makes the resulting API available in the
 //              namespace fs.
 //---------------------------------------------------------------------------------------
 #ifndef GHC_FILESYSTEM_STD_H
-#if defined(__cplusplus) && __cplusplus >= 201703L && defined(__has_include) && __has_include(<filesystem>)
-#include <filesystem>
-namespace fs {
-using namespace std::filesystem;
-using ifstream = std::ifstream;
-using ofstream = std::ofstream;
-using fstream = std::fstream;
-}
-#else
-#include <ghc/filesystem.hpp>
-namespace fs {
-using namespace ghc::filesystem;
-using ifstream = ghc::filesystem::ifstream;
-using ofstream = ghc::filesystem::ofstream;
-using fstream = ghc::filesystem::fstream;
-} 
-#endif
-#endif // GHC_FILESYSTEM_STD_H
+#define GHC_FILESYSTEM_STD_H
 
+#if defined(_MSVC_LANG) && _MSVC_LANG >= 201703L || __cplusplus >= 201703L && defined(__has_include)
+    // ^ Supports MSVC prior to 15.7 without setting /Zc:__cplusplus to fix __cplusplus
+    // _MSVC_LANG works regardless. But without the switch, the compiler always reported 199711L: https://blogs.msdn.microsoft.com/vcblog/2018/04/09/msvc-now-correctly-reports-__cplusplus/
+    #if __has_include(<filesystem>) // Two stage __has_include needed for MSVC 2015 and per https://gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005finclude.html
+        #define GHC_USE_STD_FS
+
+        // Old Apple OSs don't support std::filesystem, though the header is available at compile
+        // time. In particular, std::filesystem is unavailable before macOS 10.15, iOS/tvOS 13.0,
+        // and watchOS 6.0.
+        #ifdef __APPLE__
+            #include <Availability.h>
+            // Note: This intentionally uses std::filesystem on any new Apple OS, like visionOS
+            // released after std::filesystem, where std::filesystem is always available.
+            // (All other __<platform>_VERSION_MIN_REQUIREDs will be undefined and thus 0.)
+            #if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED < 101500 \
+             || defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 130000 \
+             || defined(__TV_OS_VERSION_MIN_REQUIRED) && __TV_OS_VERSION_MIN_REQUIRED < 130000 \
+             || defined(__WATCH_OS_VERSION_MAX_ALLOWED) && __WATCH_OS_VERSION_MAX_ALLOWED < 60000
+                #undef GHC_USE_STD_FS
+            #endif
+        #endif
+    #endif
+#endif
+
+#ifdef GHC_USE_STD_FS
+    #include <filesystem>
+    namespace fs {
+        using namespace std::filesystem;
+        using ifstream = std::ifstream;
+        using ofstream = std::ofstream;
+        using fstream = std::fstream;
+    }
+#else
+    #include "filesystem.hpp"
+    namespace fs {
+        using namespace ghc::filesystem;
+        using ifstream = ghc::filesystem::ifstream;
+        using ofstream = ghc::filesystem::ofstream;
+        using fstream = ghc::filesystem::fstream;
+    }
+#endif
+
+#endif // GHC_FILESYSTEM_STD_H

include/ghc/fs_std_fwd.hpp

@@ -5,35 +5,27 @@
 //---------------------------------------------------------------------------------------
 //
 // Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com>
-// All rights reserved.
 //
-// Redistribution and use in source and binary forms, with or without modification,
-// are permitted provided that the following conditions are met:
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
 //
-// 1. Redistributions of source code must retain the above copyright notice, this
-//    list of conditions and the following disclaimer.
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
 //
-// 2. Redistributions in binary form must reproduce the above copyright notice,
-//    this list of conditions and the following disclaimer in the documentation
-//    and/or other materials provided with the distribution.
-//
-// 3. Neither the name of the copyright holder nor the names of its contributors
-//    may be used to endorse or promote products derived from this software without
-//    specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
 //
 //---------------------------------------------------------------------------------------
-// fs_std_fwd.hpp - The forwarding header for the header/implementation seperated usage of
+// fs_std_fwd.hpp - The forwarding header for the header/implementation separated usage of
 //                  ghc::filesystem that uses std::filesystem if it detects it.
 // This file can be include at any place, where fs::filesystem api is needed while
 // not bleeding implementation details (e.g. system includes) into the global namespace,
@@ -41,23 +33,47 @@
 //---------------------------------------------------------------------------------------
 #ifndef GHC_FILESYSTEM_STD_FWD_H
 #define GHC_FILESYSTEM_STD_FWD_H
-#if defined(__cplusplus) && __cplusplus >= 201703L && defined(__has_include) && __has_include(<filesystem>)
-#include <filesystem>
-namespace fs {
-using namespace std::filesystem;
-using ifstream = std::ifstream;
-using ofstream = std::ofstream;
-using fstream = std::fstream;
-}
-#else
-#define GHC_FILESYSTEM_FWD
-#include <ghc/filesystem.hpp>
-namespace fs {
-using namespace ghc::filesystem;
-using ifstream = ghc::filesystem::ifstream;
-using ofstream = ghc::filesystem::ofstream;
-using fstream = ghc::filesystem::fstream;
-} 
-#endif
-#endif // GHC_FILESYSTEM_STD_FWD_H
 
+#if defined(_MSVC_LANG) && _MSVC_LANG >= 201703L || __cplusplus >= 201703L && defined(__has_include)
+    // ^ Supports MSVC prior to 15.7 without setting /Zc:__cplusplus to fix __cplusplus
+    // _MSVC_LANG works regardless. But without the switch, the compiler always reported 199711L: https://blogs.msdn.microsoft.com/vcblog/2018/04/09/msvc-now-correctly-reports-__cplusplus/
+    #if __has_include(<filesystem>) // Two stage __has_include needed for MSVC 2015 and per https://gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005finclude.html
+        #define GHC_USE_STD_FS
+
+        // Old Apple OSs don't support std::filesystem, though the header is available at compile
+        // time. In particular, std::filesystem is unavailable before macOS 10.15, iOS/tvOS 13.0,
+        // and watchOS 6.0.
+        #ifdef __APPLE__
+            #include <Availability.h>
+            // Note: This intentionally uses std::filesystem on any new Apple OS, like visionOS
+            // released after std::filesystem, where std::filesystem is always available.
+            // (All other __<platform>_VERSION_MIN_REQUIREDs will be undefined and thus 0.)
+            #if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED < 101500 \
+             || defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 130000 \
+             || defined(__TV_OS_VERSION_MIN_REQUIRED) && __TV_OS_VERSION_MIN_REQUIRED < 130000 \
+             || defined(__WATCH_OS_VERSION_MAX_ALLOWED) && __WATCH_OS_VERSION_MAX_ALLOWED < 60000
+                #undef GHC_USE_STD_FS
+            #endif
+        #endif
+    #endif
+#endif
+
+#ifdef GHC_USE_STD_FS
+    #include <filesystem>
+    namespace fs {
+        using namespace std::filesystem;
+        using ifstream = std::ifstream;
+        using ofstream = std::ofstream;
+        using fstream = std::fstream;
+    }
+#else
+    #include "fs_fwd.hpp"
+    namespace fs {
+        using namespace ghc::filesystem;
+        using ifstream = ghc::filesystem::ifstream;
+        using ofstream = ghc::filesystem::ofstream;
+        using fstream = ghc::filesystem::fstream;
+    }
+#endif
+
+#endif // GHC_FILESYSTEM_STD_FWD_H

include/ghc/fs_std_impl.hpp

@@ -5,42 +5,56 @@
 //---------------------------------------------------------------------------------------
 //
 // Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com>
-// All rights reserved.
 //
-// Redistribution and use in source and binary forms, with or without modification,
-// are permitted provided that the following conditions are met:
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
 //
-// 1. Redistributions of source code must retain the above copyright notice, this
-//    list of conditions and the following disclaimer.
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
 //
-// 2. Redistributions in binary form must reproduce the above copyright notice,
-//    this list of conditions and the following disclaimer in the documentation
-//    and/or other materials provided with the distribution.
-//
-// 3. Neither the name of the copyright holder nor the names of its contributors
-//    may be used to endorse or promote products derived from this software without
-//    specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
 //
 //---------------------------------------------------------------------------------------
-// fs_std_impl.hpp - The implementation header for the header/implementation seperated usage of
+// fs_std_impl.hpp - The implementation header for the header/implementation separated usage of
 //                   ghc::filesystem that does nothing if std::filesystem is detected.
 // This file can be used to hide the implementation of ghc::filesystem into a single cpp.
 // The cpp has to include this before including fs_std_fwd.hpp directly or via a different
 // header to work.
 //---------------------------------------------------------------------------------------
-#if !(defined(__cplusplus) && __cplusplus >= 201703L && defined(__has_include) && __has_include(<filesystem>))
-#define GHC_FILESYSTEM_IMPLEMENTATION
-#include <ghc/filesystem.hpp>
+#if defined(_MSVC_LANG) && _MSVC_LANG >= 201703L || __cplusplus >= 201703L && defined(__has_include)
+    // ^ Supports MSVC prior to 15.7 without setting /Zc:__cplusplus to fix __cplusplus
+    // _MSVC_LANG works regardless. But without the switch, the compiler always reported 199711L: https://blogs.msdn.microsoft.com/vcblog/2018/04/09/msvc-now-correctly-reports-__cplusplus/
+    #if __has_include(<filesystem>) // Two stage __has_include needed for MSVC 2015 and per https://gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005finclude.html
+        #define GHC_USE_STD_FS
+
+        // Old Apple OSs don't support std::filesystem, though the header is available at compile
+        // time. In particular, std::filesystem is unavailable before macOS 10.15, iOS/tvOS 13.0,
+        // and watchOS 6.0.
+        #ifdef __APPLE__
+            #include <Availability.h>
+            // Note: This intentionally uses std::filesystem on any new Apple OS, like visionOS
+            // released after std::filesystem, where std::filesystem is always available.
+            // (All other __<platform>_VERSION_MIN_REQUIREDs will be undefined and thus 0.)
+            #if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED < 101500 \
+             || defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 130000 \
+             || defined(__TV_OS_VERSION_MIN_REQUIRED) && __TV_OS_VERSION_MIN_REQUIRED < 130000 \
+             || defined(__WATCH_OS_VERSION_MAX_ALLOWED) && __WATCH_OS_VERSION_MAX_ALLOWED < 60000
+                #undef GHC_USE_STD_FS
+            #endif
+        #endif
+    #endif
 #endif
 
+#ifndef GHC_USE_STD_FS
+    #include "fs_impl.hpp"
+#endif

test/CMakeLists.txt

@@ -3,48 +3,80 @@ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/")
 set(PARSE_CATCH_TESTS_ADD_TO_CONFIGURE_DEPENDS ON)
 include(ParseAndAddCatchTests)
 
-add_executable(filesystem_test filesystem_test.cpp catch.hpp)
-target_link_libraries(filesystem_test ghc_filesystem)
-target_compile_options(filesystem_test PRIVATE
-          $<$<CXX_COMPILER_ID:Clang>:-Wall -Wextra -Werror>
-          $<$<CXX_COMPILER_ID:GNU>:-Wall -Werror>
-          $<$<CXX_COMPILER_ID:MSVC>:/WX>)
-if(CMAKE_CXX_COMPILER_ID MATCHES MSVC)
-    target_compile_definitions(filesystem_test PRIVATE _CRT_SECURE_NO_WARNINGS)
+if("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" AND UNIX AND NOT APPLE AND NOT BSD)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
+    set(CMAKE_EXE_LINKER_FLAGS "-lc++abi")
 endif()
-if(CMAKE_GENERATOR STREQUAL Xcode)
-    add_executable(filesystem_test_cov filesystem_test.cpp catch.hpp)
-    target_compile_options(filesystem_test_cov PRIVATE "$<$<CONFIG:DEBUG>:--coverage>")
-    target_link_libraries(filesystem_test_cov PUBLIC ghc_filesystem PRIVATE --coverage)
-endif()
-ParseAndAddCatchTests(filesystem_test filesystem_test)
 
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" AND (CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 7.0 OR CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 7.0))
-    if(APPLE)
-        include_directories(/usr/local/opt/llvm/include)
-        link_directories(/usr/local/opt/llvm/lib)
-    endif()
-    add_executable(std_filesystem_test filesystem_test.cpp catch.hpp)
-    set_property(TARGET std_filesystem_test PROPERTY CXX_STANDARD 17)
-    target_compile_definitions(std_filesystem_test PRIVATE USE_STD_FS)
-    if(APPLE)
-        target_link_libraries(std_filesystem_test -lc++fs)
+function(SetTestCompileOptions target_name)
+    target_compile_options(${target_name} PRIVATE
+        $<$<BOOL:${EMSCRIPTEN}>:-s DISABLE_EXCEPTION_CATCHING=0>
+        $<$<OR:$<CXX_COMPILER_ID:Clang>,$<CXX_COMPILER_ID:AppleClang>>:-Wall -Wextra -Wshadow -Wconversion -Wsign-conversion -Wpedantic -Werror -Wno-deprecated-declarations>
+        $<$<CXX_COMPILER_ID:GNU>:-Wall -Wextra -Wshadow -Wconversion -Wsign-conversion -Wpedantic -Wno-psabi -Werror -Wno-deprecated-declarations>
+        $<$<CXX_COMPILER_ID:MSVC>:/WX /wd4996>
+        $<$<BOOL:${CYGWIN}>:-Wa,-mbig-obj>)
+endfunction()
+
+if(GHC_COVERAGE)
+    message("Generating test runner for coverage run...")
+    set(CMAKE_EXE_LINKER_FLAGS "${CMCMAKE_EXE_LINKER_FLAGS} --coverage") 
+    add_executable(filesystem_test filesystem_test.cpp catch.hpp)
+    if(MINGW)
+        target_compile_options(filesystem_test PUBLIC --coverage "-Wa,-mbig-obj")
     else()
-        target_compile_options(std_filesystem_test PRIVATE "-stdlib=libc++")
-        target_link_libraries(std_filesystem_test -stdlib=libc++ -lc++fs)
+        target_compile_options(filesystem_test PUBLIC --coverage)
+    endif()
+    target_link_libraries(filesystem_test PUBLIC ghc_filesystem --coverage)
+    if(${CMAKE_SYSTEM_NAME} MATCHES "(SunOS|Solaris)")
+        target_link_libraries(filesystem_test PUBLIC xnet)
+    endif()
+    if(${CMAKE_SYSTEM_NAME} MATCHES "Haiku")
+        target_link_libraries(filesystem_test PUBLIC network)
+    endif()
+    if("cxx_std_17" IN_LIST GHC_FILESYSTEM_TEST_COMPILE_FEATURES)
+        AddTestExecutableWithStdCpp(17 filesystem_test.cpp catch.hpp)
+    endif()
+    if("cxx_std_20" IN_LIST GHC_FILESYSTEM_TEST_COMPILE_FEATURES)
+        AddTestExecutableWithStdCpp(20 filesystem_test.cpp catch.hpp)
+    endif()
+else()
+    message("Generating test runner for normal test...")
+    add_executable(filesystem_test filesystem_test.cpp catch.hpp)
+    target_link_libraries(filesystem_test ghc_filesystem)
+    if(${CMAKE_SYSTEM_NAME} MATCHES "(SunOS|Solaris)")
+        target_link_libraries(filesystem_test xnet)
+    endif()
+    if(${CMAKE_SYSTEM_NAME} MATCHES "Haiku")
+        target_link_libraries(filesystem_test network)
+    endif()
+    SetTestCompileOptions(filesystem_test)
+    if(CMAKE_CXX_COMPILER_ID MATCHES MSVC)
+        target_compile_definitions(filesystem_test PRIVATE _CRT_SECURE_NO_WARNINGS WIN32_LEAN_AND_MEAN NOMINMAX)
+    endif()
+    if(EMSCRIPTEN)
+        set_target_properties(filesystem_test PROPERTIES LINK_FLAGS "-g4 -s DISABLE_EXCEPTION_CATCHING=0 -s ALLOW_MEMORY_GROWTH=1")
+    endif()
+    ParseAndAddCatchTests(filesystem_test)
+    if(GHC_FILESYSTEM_BUILD_STD_TESTING)
+        AddExecutableWithStdFS(std_filesystem_test filesystem_test.cpp catch.hpp)
+    endif()
+    if(WIN32)
+        add_executable(filesystem_test_char filesystem_test.cpp catch.hpp)
+        target_link_libraries(filesystem_test_char ghc_filesystem)
+        SetTestCompileOptions(filesystem_test_char)
+        if(CMAKE_CXX_COMPILER_ID MATCHES MSVC)
+		target_compile_definitions(filesystem_test_char PRIVATE _CRT_SECURE_NO_WARNINGS GHC_WIN_DISABLE_WSTRING_STORAGE_TYPE)
+        else()
+		target_compile_definitions(filesystem_test_char PRIVATE GHC_WIN_DISABLE_WSTRING_STORAGE_TYPE)
+        endif()
+        ParseAndAddCatchTests(filesystem_test_char)
+    endif()
+    if("cxx_std_17" IN_LIST GHC_FILESYSTEM_TEST_COMPILE_FEATURES)
+        AddTestExecutableWithStdCpp(17 filesystem_test.cpp catch.hpp)
+    endif()
+    if("cxx_std_20" IN_LIST GHC_FILESYSTEM_TEST_COMPILE_FEATURES)
+        AddTestExecutableWithStdCpp(20 filesystem_test.cpp catch.hpp)
     endif()
-endif()
-if (CMAKE_COMPILER_IS_GNUCXX AND (CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 8.0 OR CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 8.0))
-    add_executable(std_filesystem_test filesystem_test.cpp catch.hpp)
-    set_property(TARGET std_filesystem_test PROPERTY CXX_STANDARD 17)
-    target_compile_definitions(std_filesystem_test PRIVATE USE_STD_FS)
-    target_link_libraries(std_filesystem_test -lstdc++fs)
-endif()
-if(CMAKE_CXX_COMPILER_ID MATCHES MSVC AND (CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 19.15 OR CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 19.15))
-    add_executable(std_filesystem_test filesystem_test.cpp catch.hpp)
-    set_property(TARGET std_filesystem_test PROPERTY CXX_STANDARD 17)
-    target_compile_options(std_filesystem_test PRIVATE "/Zc:__cplusplus")
-    target_compile_definitions(std_filesystem_test PRIVATE USE_STD_FS _CRT_SECURE_NO_WARNINGS)
 endif()
 
 add_executable(multifile_test multi1.cpp multi2.cpp catch.hpp)
@@ -53,7 +85,21 @@ add_test(multifile_test multifile_test)
 
 add_executable(fwd_impl_test fwd_test.cpp impl_test.cpp)
 target_link_libraries(fwd_impl_test ghc_filesystem)
+if(${CMAKE_SYSTEM_NAME} MATCHES "(SunOS|Solaris)")
+    target_link_libraries(fwd_impl_test xnet)
+endif()
+if(${CMAKE_SYSTEM_NAME} MATCHES "Haiku")
+    target_link_libraries(fwd_impl_test network)
+endif()
+SetTestCompileOptions(fwd_impl_test)
 if(CMAKE_CXX_COMPILER_ID MATCHES MSVC)
-    target_compile_definitions(fwd_impl_test PRIVATE _CRT_SECURE_NO_WARNINGS)
+	target_compile_definitions(fwd_impl_test PRIVATE _CRT_SECURE_NO_WARNINGS WIN32_LEAN_AND_MEAN NOMINMAX)
 endif()
 add_test(fwd_impl_test fwd_impl_test)
+
+add_executable(exception exception.cpp)
+if(NOT MSVC)
+    target_compile_options(exception PRIVATE -fno-exceptions)
+endif()
+target_include_directories(exception PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../include)
+SetTestCompileOptions(exception)

test/cmake/ParseAndAddCatchTests.cmake

@@ -144,7 +144,7 @@ function(ParseAndAddCatchTests_ParseFile SourceFile TestTarget)
         if("${TestType}" STREQUAL "SCENARIO")
             set(Name "Scenario: ${Name}")
         endif()
-        if(PARSE_CATCH_TESTS_ADD_FIXTURE_IN_TEST_NAME AND TestFixture)
+        if(PARSE_CATCH_TESTS_ADD_FIXTURE_IN_TEST_NAME AND "${TestType}" MATCHES "(CATCH_)?TEST_CASE_METHOD" AND TestFixture )
             set(CTestName "${TestFixture}:${Name}")
         else()
             set(CTestName "${Name}")
@@ -189,24 +189,29 @@ function(ParseAndAddCatchTests_ParseFile SourceFile TestTarget)
             # Escape commas in the test spec
             string(REPLACE "," "\\," Name ${Name})
 
+            # Work around CMake 3.18.0 change in `add_test()`, before the escaped quotes were neccessary,
+            # only with CMake 3.18.0 the escaped double quotes confuse the call. This change is reverted in 3.18.1
+            if(NOT ${CMAKE_VERSION} VERSION_EQUAL "3.18")
+                set(CTestName "\"${CTestName}\"")
+            endif()
             # Add the test and set its properties
-            add_test(NAME "\"${CTestName}\"" COMMAND ${OptionalCatchTestLauncher} $<TARGET_FILE:${TestTarget}> ${Name} ${AdditionalCatchParameters})
+            add_test(NAME "${CTestName}" COMMAND ${OptionalCatchTestLauncher} $<TARGET_FILE:${TestTarget}> ${Name} ${AdditionalCatchParameters})
             # Old CMake versions do not document VERSION_GREATER_EQUAL, so we use VERSION_GREATER with 3.8 instead
             if(PARSE_CATCH_TESTS_NO_HIDDEN_TESTS AND ${HiddenTagFound} AND ${CMAKE_VERSION} VERSION_GREATER "3.8")
                 ParseAndAddCatchTests_PrintDebugMessage("Setting DISABLED test property")
-                set_tests_properties("\"${CTestName}\"" PROPERTIES DISABLED ON)
+                set_tests_properties("${CTestName}" PROPERTIES DISABLED ON)
             else()
-                set_tests_properties("\"${CTestName}\"" PROPERTIES FAIL_REGULAR_EXPRESSION "No tests ran"
+                set_tests_properties("${CTestName}" PROPERTIES FAIL_REGULAR_EXPRESSION "No tests ran"
                                                         LABELS "${Labels}")
             endif()
             set_property(
               TARGET ${TestTarget}
               APPEND
-              PROPERTY ParseAndAddCatchTests_TESTS "\"${CTestName}\"")
+              PROPERTY ParseAndAddCatchTests_TESTS "${CTestName}")
             set_property(
               SOURCE ${SourceFile}
               APPEND
-              PROPERTY ParseAndAddCatchTests_TESTS "\"${CTestName}\"")
+              PROPERTY ParseAndAddCatchTests_TESTS "${CTestName}")
         endif()
 
 

test/exception.cpp

@@ -0,0 +1,5 @@
+#include <ghc/filesystem.hpp>
+
+int main() {
+    return 0;
+}

test/impl_test.cpp

@@ -3,7 +3,6 @@
 // where exactly one cpp includes fs_impl.hpp and all others use
 // fs_fwd.hpp (to test this with maximum functionality, the unit tests
 // are included here, signaling they should only include the fs_fwd.hpp)
-#define NOMINMAX
 #include <ghc/fs_impl.hpp>
 #define CATCH_CONFIG_MAIN
 #include "catch.hpp"

test/multi1.cpp

@@ -1,32 +1,24 @@
 //---------------------------------------------------------------------------------------
 //
 // Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com>
-// All rights reserved.
 //
-// Redistribution and use in source and binary forms, with or without modification,
-// are permitted provided that the following conditions are met:
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
 //
-// 1. Redistributions of source code must retain the above copyright notice, this
-//    list of conditions and the following disclaimer.
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
 //
-// 2. Redistributions in binary form must reproduce the above copyright notice,
-//    this list of conditions and the following disclaimer in the documentation
-//    and/or other materials provided with the distribution.
-//
-// 3. Neither the name of the copyright holder nor the names of its contributors
-//    may be used to endorse or promote products derived from this software without
-//    specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
 //
 //---------------------------------------------------------------------------------------
 #define CATCH_CONFIG_MAIN
@@ -35,7 +27,7 @@
 #include <ghc/filesystem.hpp>
 namespace fs = ghc::filesystem;
 
-// This test and the one in multi2.cpp doesn't actualy test relevant functionality,
+// This test and the one in multi2.cpp doesn't actually test relevant functionality,
 // it is just used to check that it is possible to include filesystem.h in multiple
 // source files.
 TEST_CASE("Multifile-test 1", "[multi]")

test/multi2.cpp

@@ -1,32 +1,24 @@
 //---------------------------------------------------------------------------------------
 //
 // Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com>
-// All rights reserved.
 //
-// Redistribution and use in source and binary forms, with or without modification,
-// are permitted provided that the following conditions are met:
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
 //
-// 1. Redistributions of source code must retain the above copyright notice, this
-//    list of conditions and the following disclaimer.
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
 //
-// 2. Redistributions in binary form must reproduce the above copyright notice,
-//    this list of conditions and the following disclaimer in the documentation
-//    and/or other materials provided with the distribution.
-//
-// 3. Neither the name of the copyright holder nor the names of its contributors
-//    may be used to endorse or promote products derived from this software without
-//    specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
 //
 //---------------------------------------------------------------------------------------
 #include "catch.hpp"