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‎.artwork/cover.png‎

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‎.gitattributes‎

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# Ignore CMakeLists.txt for GitHubs repo language detection
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CMakeLists.txt linguist-detectable=false

‎.github/workflows/ci.yml‎

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name: ci
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# Trigger on pushes to all branches and for all pull-requests
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on: [push, pull_request]
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env:
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CMAKE_VERSION: 3.16.2
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NINJA_VERSION: 1.10.0
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jobs:
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build:
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name: ${{ matrix.config.name }}
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runs-on: ${{ matrix.config.os }}
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strategy:
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fail-fast: false
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matrix:
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config:
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# GCC-10
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- {
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name: "Linux GCC 10",
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os: ubuntu-20.04,
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build_type: Release,
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cxx: "g++-10",
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gcc_version: 10,
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}
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# Clang-11
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- {
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name: "Linux Clang 11",
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os: ubuntu-20.04,
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build_type: Release,
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cxx: "clang++-11",
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clang_version: 11,
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libcxx: true
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}
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# # AppleClang
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# - {
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# name: "macOS Clang",
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# os: macos-latest,
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# build_type: Release,
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# cxx: "clang++",
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# }
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# MSVC 2019
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- {
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name: "Windows MSVC 2019",
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os: windows-latest,
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build_type: Release,
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cxx: "cl",
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environment_script: "C:/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/VC/Auxiliary/Build/vcvars64.bat",
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}
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steps:
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- uses: actions/checkout@v2
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with:
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fetch-depth: 2
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- name: Download Ninja and CMake
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id: cmake_and_ninja
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shell: cmake -P {0}
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run: |
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set(cmake_version $ENV{CMAKE_VERSION})
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set(ninja_version $ENV{NINJA_VERSION})
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message(STATUS "Using host CMake version: ${CMAKE_VERSION}")
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if ("${{ runner.os }}" STREQUAL "Windows")
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set(ninja_suffix "win.zip")
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set(cmake_suffix "win64-x64.zip")
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set(cmake_dir "cmake-${cmake_version}-win64-x64/bin")
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elseif ("${{ runner.os }}" STREQUAL "Linux")
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set(ninja_suffix "linux.zip")
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set(cmake_suffix "Linux-x86_64.tar.gz")
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set(cmake_dir "cmake-${cmake_version}-Linux-x86_64/bin")
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elseif ("${{ runner.os }}" STREQUAL "macOS")
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set(ninja_suffix "mac.zip")
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set(cmake_suffix "Darwin-x86_64.tar.gz")
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set(cmake_dir "cmake-${cmake_version}-Darwin-x86_64/CMake.app/Contents/bin")
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endif()
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set(ninja_url "https://github.com/ninja-build/ninja/releases/download/v${ninja_version}/ninja-${ninja_suffix}")
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file(DOWNLOAD "${ninja_url}" ./ninja.zip SHOW_PROGRESS)
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execute_process(COMMAND ${CMAKE_COMMAND} -E tar xf ./ninja.zip)
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set(cmake_url "https://github.com/Kitware/CMake/releases/download/v${cmake_version}/cmake-${cmake_version}-${cmake_suffix}")
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file(DOWNLOAD "${cmake_url}" ./cmake.zip SHOW_PROGRESS)
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execute_process(COMMAND ${CMAKE_COMMAND} -E tar xf ./cmake.zip)
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# preserve it for the next steps
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file(TO_CMAKE_PATH "$ENV{GITHUB_WORKSPACE}/${cmake_dir}" cmake_dir)
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message("::set-output name=cmake_dir::${cmake_dir}")
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if (NOT "${{ runner.os }}" STREQUAL "Windows")
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execute_process(
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COMMAND chmod +x ninja
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COMMAND chmod +x ${cmake_dir}/cmake
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)
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endif()
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- name: Install Clang 11
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id: install_clang_11
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if: startsWith(matrix.config.os, 'ubuntu') && ( matrix.config.cxx == 'clang++-11' )
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shell: bash
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working-directory: ${{ env.HOME }}
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run: |
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wget https://apt.llvm.org/llvm.sh
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chmod +x llvm.sh
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sudo ./llvm.sh ${{ matrix.config.clang_version }}
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- name: Install g++ 10
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id: install_gcc_10
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if: startsWith(matrix.config.os, 'ubuntu') && ( matrix.config.cxx == 'g++-10' )
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shell: bash
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working-directory: ${{ env.HOME }}
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env:
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CXX: ${{ matrix.config.cxx }}
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run: |
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curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
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sudo add-apt-repository ppa:ubuntu-toolchain-r/test
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sudo apt-get update
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sudo apt-get install g++-${{ matrix.config.gcc_version }}
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sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-10 100
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- name: Install libc++
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id: install_libcxx
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if: matrix.config.libcxx
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shell: bash
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working-directory: ${{ env.HOME }}
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env:
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CXX: ${{ matrix.config.cxx }}
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run: |
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sudo apt-get install libc++-${{ matrix.config.clang_version }}-dev libc++abi-${{ matrix.config.clang_version }}-dev
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- name: Configure
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id: cmake_configure
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shell: cmake -P {0}
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run: |
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set(ENV{CXX} ${{ matrix.config.cxx }})
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if ("${{ runner.os }}" STREQUAL "Windows")
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execute_process(
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COMMAND "${{ matrix.config.environment_script }}" && set
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OUTPUT_FILE environment_script_output.txt
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)
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set(cxx_flags "/permissive- /EHsc")
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file(STRINGS environment_script_output.txt output_lines)
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foreach(line IN LISTS output_lines)
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if (line MATCHES "^([a-zA-Z0-9_-]+)=(.*)$")
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set(ENV{${CMAKE_MATCH_1}} "${CMAKE_MATCH_2}")
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endif()
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endforeach()
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endif()
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set(path_separator ":")
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if ("${{ runner.os }}" STREQUAL "Windows")
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set(path_separator ";")
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endif()
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set(ENV{PATH} "$ENV{GITHUB_WORKSPACE}${path_separator}$ENV{PATH}")
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if ("x${{ matrix.config.libcxx }}" STREQUAL "xtrue")
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set(cxx_flags "${cxx_flags} -stdlib=libc++ -Wno-unused-command-line-argument")
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set(link_flags "${link_flags} -lc++abi")
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endif()
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execute_process(
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COMMAND ${{ steps.cmake_and_ninja.outputs.cmake_dir }}/cmake
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-S .
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-B build
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-G Ninja
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-D CMAKE_BUILD_TYPE=${{ matrix.config.build_type }}
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-D CMAKE_MAKE_PROGRAM:STRING=ninja
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-D "CMAKE_CXX_FLAGS:STRING=${cxx_flags}"
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-D "CMAKE_EXE_LINKER_FLAGS:STRING=${link_flags}"
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${{ matrix.config.cmake_args }}
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RESULT_VARIABLE result
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)
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if (NOT result EQUAL 0)
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message(FATAL_ERROR "Bad exit from cmake configure status")
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endif()
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- name: Build
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shell: cmake -P {0}
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continue-on-error: false
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run: |
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set(ENV{NINJA_STATUS} "[%f/%t %o/sec] ")
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if ("${{ runner.os }}" STREQUAL "Windows")
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execute_process(
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COMMAND "${{ matrix.config.environment_script }}" && set
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OUTPUT_FILE environment_script_output.txt
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)
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set(cxx_flags "/permissive- /EHsc")
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file(STRINGS environment_script_output.txt output_lines)
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foreach(line IN LISTS output_lines)
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if (line MATCHES "^([a-zA-Z0-9_-]+)=(.*)$")
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set(ENV{${CMAKE_MATCH_1}} "${CMAKE_MATCH_2}")
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endif()
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endforeach()
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endif()
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set(path_separator ":")
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if ("${{ runner.os }}" STREQUAL "Windows")
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set(path_separator ";")
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endif()
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set(ENV{PATH} "$ENV{GITHUB_WORKSPACE}${path_separator}$ENV{PATH}")
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execute_process(
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COMMAND ${{ steps.cmake_and_ninja.outputs.cmake_dir }}/cmake --build build
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RESULT_VARIABLE result
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)
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if (NOT result EQUAL 0)
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message(FATAL_ERROR "Bad exit status from building")
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endif()

‎01.01-variadicTemplateSum0/CMakeLists.txt‎

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# Copyright (c) Andreas Fertig.
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# SPDX-License-Identifier: MIT
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cmake_minimum_required(VERSION 3.16.2 FATAL_ERROR)
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set(CXX_STANDARD_REQUIRED ON)
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set(CMAKE_CXX_STANDARD 17)
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set(EXEC_NAME ${CMAKE_CURRENT_SOURCE_DIR})
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project(${EXEC_NAME} CXX)
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# build the filename
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get_filename_component(EXEC_NAME "${EXEC_NAME}" NAME)
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function(check_compiler COMPILER version)
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if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "${COMPILER}")
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if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS ${version})
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message(FATAL_ERROR "${COMPILER} version must be at least ${version}!")
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endif()
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set(HAVE_COMPILER On PARENT_SCOPE)
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endif()
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endfunction(check_compiler)
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check_compiler("GNU" 10.2)
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check_compiler("Clang" 11.0)
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check_compiler("MSVC" 19.28.29333.0)
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if(NOT HAVE_COMPILER)
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message(ERROR "You are using an unsupported compiler!")
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endif()
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if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
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set(IS_GNU On)
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add_definitions(-DIS_GCC=true)
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else()
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set(IS_GNU Off)
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add_definitions(-DIS_GCC=false)
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endif()
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if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "AppleClang")
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set(IS_CLANG On)
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add_definitions(-DIS_CLANG=true)
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else()
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set(IS_CLANG Off)
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add_definitions(-DIS_CLANG=false)
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endif()
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if(MSVC)
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add_definitions(-DIS_MSVC=true)
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add_definitions(/WX)
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add_definitions(/W4)
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add_definitions(/wd4189)
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add_definitions(/wd4100)
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add_definitions(/wd4996) # 'fopen': This function or variable may be unsafe. Consider using fopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS.
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add_definitions(/wd4267)
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add_definitions(/wd4505)
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add_definitions(/await) # enable coroutine support
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# Use sane and nice C++ for MSVC.
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# This makes alternative tokens (not, and, ...) as actual keywords and
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# enables more conformant C++ in general
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add_definitions(/permissive-)
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else()
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add_definitions(-DIS_MSVC=false)
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add_definitions(-Werror)
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add_definitions(-Wall)
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add_definitions(-Wextra)
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add_definitions(-Wold-style-cast)
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add_definitions(-Wno-unused-variable)
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add_definitions(-Wno-unused-parameter)
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add_definitions(-Wno-unused-value)
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add_definitions(-Wno-cpp)
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if(IS_CLANG)
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add_definitions(-Wno-unused-private-field)
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add_definitions(-Wno-unneeded-internal-declaration)
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else()
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add_definitions(-fcoroutines) # required for GCC-10
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endif()
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endif()
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add_executable(${EXEC_NAME} main.cpp)
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‎01.01-variadicTemplateSum0/main.cpp‎

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// Copyright (c) Andreas Fertig.
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// SPDX-License-Identifier: MIT
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#include <cstdio>
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#include <type_traits>
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template<typename... Args>
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auto add(Args&&... args)
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{
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return (... + args);
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}
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int main()
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{
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printf("%d\n", add(2, 3, 4));
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printf("%d\n", add(2));
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}

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