json/.github/workflows/windows.yml

name: Windows

on:
  push:
    branches:
      - develop
      - master
      - release/*
  pull_request:
  workflow_dispatch:

permissions:
  contents: read

concurrency:
  group: ${{ github.workflow }}-${{ github.ref || github.run_id }}
  cancel-in-progress: true

jobs:
  mingw:
    runs-on: windows-2022
    strategy:
      matrix:
        architecture: [x64, x86]

    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false
      - name: Set up MinGW
        uses: egor-tensin/setup-mingw@41b837e47d7f85214629d255b9c4bc3fcbe9fd63 # v3.0
        with:
          platform: ${{ matrix.architecture }}
          version: 12.2.0 # https://github.com/egor-tensin/setup-mingw/issues/14
      - name: Run CMake
        run: cmake -S . -B build -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Debug -DJSON_BuildTests=On
      - name: Build
        run: cmake --build build --parallel 10
      - name: Test
        run: cd build ; ctest -j 10 -C Debug --output-on-failure

  msvc:
    strategy:
      matrix:
        build_type: [Debug, Release]
        architecture: [Win32, x64]
        std_version: [default, latest]

    runs-on: windows-2022

    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false
      - name: Set extra CXX_FLAGS for latest std_version
        id: cxxflags
        run: |
          if [ "${{ matrix.std_version }}" = "latest" ]; then
            echo "flags=/permissive- /std:c++latest /utf-8 /W4 /WX" >> $GITHUB_ENV
          else
            echo "flags=/W4 /WX" >> $GITHUB_ENV
          fi
        shell: bash
      - name: Run CMake (Release)
        run: cmake -S . -B build -G "Visual Studio 17 2022" -A ${{ matrix.architecture }} -DJSON_BuildTests=On -DCMAKE_CXX_FLAGS="$env:flags"
        if: matrix.build_type == 'Release'
        shell: pwsh
      - name: Run CMake (Debug)
        run: cmake -S . -B build -G "Visual Studio 17 2022" -A ${{ matrix.architecture }} -DJSON_BuildTests=On -DJSON_FastTests=ON -DCMAKE_CXX_FLAGS="$env:flags"
        if: matrix.build_type == 'Debug'
        shell: pwsh
      - name: Build
        run: cmake --build build --config ${{ matrix.build_type }} --parallel 10
      - name: Test
        run: cd build ; ctest -j 10 -C ${{ matrix.build_type }} --output-on-failure

  # Visual Studio 2026 (v145 toolset) on the windows-2025 image. The "Visual Studio
  # 18 2026" generator requires CMake 4.2+, so a recent CMake is fetched explicitly.
  msvc-vs2026:
    strategy:
      matrix:
        build_type: [Debug, Release]
        architecture: [Win32, x64]
        std_version: [default, latest]

    runs-on: windows-2025

    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false
      - name: Get latest CMake and ninja
        uses: lukka/get-cmake@fffaaafeea488556c2c12dad60690008bc1caacb # v4.4.2
      - name: Set extra CXX_FLAGS for latest std_version
        # /wd5285 silences C5285 emitted by the bundled third-party doctest.h, which
        # specializes std::tuple (newly diagnosed by the VS2026 v145 toolset)
        run: |
          if [ "${{ matrix.std_version }}" = "latest" ]; then
            echo "flags=/permissive- /std:c++latest /utf-8 /W4 /WX /wd5285" >> $GITHUB_ENV
          else
            echo "flags=/W4 /WX /wd5285" >> $GITHUB_ENV
          fi
        shell: bash
      - name: Run CMake (Release)
        run: cmake -S . -B build -G "Visual Studio 18 2026" -A ${{ matrix.architecture }} -DJSON_BuildTests=On -DCMAKE_CXX_FLAGS="$env:flags"
        if: matrix.build_type == 'Release'
        shell: pwsh
      - name: Run CMake (Debug)
        run: cmake -S . -B build -G "Visual Studio 18 2026" -A ${{ matrix.architecture }} -DJSON_BuildTests=On -DJSON_FastTests=ON -DCMAKE_CXX_FLAGS="$env:flags"
        if: matrix.build_type == 'Debug'
        shell: pwsh
      - name: Build
        run: cmake --build build --config ${{ matrix.build_type }} --parallel 10
      - name: Test
        run: cd build ; ctest -j 10 -C ${{ matrix.build_type }} --output-on-failure

  # Native ARM64 Windows runner with the MSVC ARM64 toolset. The windows-11-arm
  # label is only available for public repositories.
  msvc-arm64:
    strategy:
      matrix:
        build_type: [Debug, Release]

    runs-on: windows-11-arm

    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false
      - name: Run CMake (Release)
        run: cmake -S . -B build -G "Visual Studio 18 2026" -A ARM64 -DJSON_BuildTests=On -DCMAKE_CXX_FLAGS="/W4 /WX"
        if: matrix.build_type == 'Release'
        shell: pwsh
      - name: Run CMake (Debug)
        run: cmake -S . -B build -G "Visual Studio 18 2026" -A ARM64 -DJSON_BuildTests=On -DJSON_FastTests=ON -DCMAKE_CXX_FLAGS="/W4 /WX"
        if: matrix.build_type == 'Debug'
        shell: pwsh
      - name: Build
        run: cmake --build build --config ${{ matrix.build_type }} --parallel 10
      - name: Test
        run: cd build ; ctest -j 10 -C ${{ matrix.build_type }} --output-on-failure

  clang:
    runs-on: windows-2022
    strategy:
      matrix:
        version: [11.0.1, 12.0.1, 13.0.1, 14.0.6, 15.0.7, 16.0.6, 18.1.8, 19.1.7, 20.1.8]

    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false
      - name: Install Clang
        run: curl -fsSL -o LLVM${{ matrix.version }}.exe https://github.com/llvm/llvm-project/releases/download/llvmorg-${{ matrix.version }}/LLVM-${{ matrix.version }}-win64.exe ; 7z x LLVM${{ matrix.version }}.exe -y -o"C:/Program Files/LLVM"
      - name: Set up MinGW
        uses: egor-tensin/setup-mingw@41b837e47d7f85214629d255b9c4bc3fcbe9fd63 # v3.0
        with:
          platform: x64
          version: 12.2.0 # https://github.com/egor-tensin/setup-mingw/issues/14
      # CMAKE_CXX_FLAGS_DEBUG is overridden to drop the default -g: linking
      # test-regression2_cpp20 intermittently fails with "relocation truncated
      # to fit: IMAGE_REL_AMD64_SECREL against `.debug_line'" because the
      # MinGW linker cannot relocate the debug sections this test produces.
      # The tests are only built and run here, so the debug info is not used.
      # Do not add -O1 here to shrink the objects further: it does make them
      # link, but the binaries clang 11.0.1 and clang 18.1.8 then produce crash
      # before doctest prints its first line - 39 of 102 tests on clang 18.
      # Keep the objects small by splitting the test files instead.
      - name: Run CMake
        run: cmake -S . -B build ^
             -DCMAKE_CXX_COMPILER="C:/Program Files/LLVM/bin/clang++.exe" ^
             -DCMAKE_CXX_FLAGS="--target=x86_64-w64-mingw32 -stdlib=libstdc++ -pthread" ^
             -DCMAKE_CXX_FLAGS_DEBUG="-g0" ^
             -DCMAKE_EXE_LINKER_FLAGS="-lwinpthread" ^
             -G"MinGW Makefiles" ^
             -DCMAKE_BUILD_TYPE=Debug ^
             -DJSON_BuildTests=On
      - name: Build
        run: cmake --build build --parallel 10
      - name: Test
        run: cd build ; ctest -j 10 -C Debug --exclude-regex "test-unicode" --output-on-failure

  clang-cl-12:
    runs-on: windows-2022
    strategy:
      matrix:
        architecture: [Win32, x64]

    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false
      - name: Run CMake
        run: cmake -S . -B build -G "Visual Studio 17 2022" -A ${{ matrix.architecture }} -T ClangCL -DJSON_BuildTests=On
      - name: Build
        run: cmake --build build --config Debug --parallel 10
      - name: Test
        run: cd build ; ctest -j 10 -C Debug --exclude-regex "test-unicode" --output-on-failure

  ci_module_cpp20:
    runs-on: windows-2022
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false
      # The module test uses `import std;`, which needs CMake's experimental
      # import-std support. Its opt-in token is CMake-version-specific, so pin
      # CMake to the version whose token is set in tests/module_cpp20/CMakeLists.txt.
      - name: Get pinned CMake and ninja
        uses: lukka/get-cmake@fffaaafeea488556c2c12dad60690008bc1caacb # v4.4.2
        with:
          cmakeVersion: 4.3.4
      - name: Run CMake (Debug)
        run: cmake -S . -B build -G "Visual Studio 17 2022" -DJSON_CI=ON -DCMAKE_CXX_FLAGS="/permissive- /std:c++latest /utf-8 /W4 /WX"
      - name: Build
        run: cmake --build build --config Debug --target ci_module_cpp20