json/.github/workflows/ubuntu.yml

name: Ubuntu

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:
  ci_test_gcc:
    runs-on: ubuntu-latest
    container: gcc:latest
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - name: Get latest CMake and ninja
        uses: lukka/get-cmake@f5b8fbb4d77cec1acc5a5f9f0df4beffaf5d98d9 # v4.3.4
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
        run: cmake --build build --target ci_test_gcc

  ci_infer:
    runs-on: ubuntu-latest
    container: ghcr.io/nlohmann/json-ci:v2.4.0
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
        run: cmake --build build --target ci_infer

  ci_static_analysis_ubuntu:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        target: [ci_test_amalgamation, ci_test_single_header, ci_cppcheck, ci_cpplint, ci_reproducible_tests, ci_non_git_tests, ci_offline_testdata, ci_reuse_compliance, ci_test_valgrind]
    steps:
      - name: Harden Runner
        uses: step-security/harden-runner@bf7454d06d71f1098171f2acdf0cd4708d7b5920 # v2.20.0
        with:
          egress-policy: audit

      - name: Install Valgrind
        run: sudo apt-get update ; sudo apt-get install -y valgrind
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - name: Get latest CMake and ninja
        uses: lukka/get-cmake@f5b8fbb4d77cec1acc5a5f9f0df4beffaf5d98d9 # v4.3.4
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
        run: cmake --build build --target ${{ matrix.target }}

  ci_static_analysis_clang:
    runs-on: ubuntu-latest
    container: silkeh/clang:dev
    strategy:
      matrix:
        target: [ci_test_clang, ci_clang_tidy, ci_test_clang_sanitizer, ci_clang_analyze, ci_single_binaries]
    steps:
      - name: Install git, clang-tools, iwyu (ci_single_binaries), and unzip
        run: apt-get update ; apt-get install -y git clang-tools iwyu unzip
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - name: Get latest CMake and ninja
        uses: lukka/get-cmake@f5b8fbb4d77cec1acc5a5f9f0df4beffaf5d98d9 # v4.3.4
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
        run: cmake --build build --target ${{ matrix.target }}

  ci_cmake_options:
    runs-on: ubuntu-latest
    container: ubuntu:focal
    strategy:
      matrix:
        target: [ci_cmake_flags, ci_test_diagnostics, ci_test_diagnostic_positions, ci_test_noexceptions, ci_test_noimplicitconversions, ci_test_legacycomparison, ci_test_noglobaludls]
    steps:
      - name: Install build-essential
        run: apt-get update ; apt-get install -y build-essential unzip wget git libssl-dev
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - name: Get latest CMake and ninja
        uses: lukka/get-cmake@f5b8fbb4d77cec1acc5a5f9f0df4beffaf5d98d9 # v4.3.4
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
        run: cmake --build build --target ${{ matrix.target }}

  ci_test_coverage:
    runs-on: ubuntu-latest
    steps:
      - name: Harden Runner
        uses: step-security/harden-runner@bf7454d06d71f1098171f2acdf0cd4708d7b5920 # v2.20.0
        with:
          egress-policy: audit

      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - name: Install dependencies and de_DE locale
        run: |
          sudo apt-get clean
          sudo apt-get update
          sudo apt-get install -y build-essential cmake lcov ninja-build make locales gcc-multilib g++-multilib
          sudo locale-gen de_DE
          sudo update-locale
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
        run: cmake --build build --target ci_test_coverage
      - name: Archive coverage report
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: code-coverage-report
          path: ${{ github.workspace }}/build/html
      - name: Publish report to Coveralls
        uses: coverallsapp/github-action@5cbfd81b66ca5d10c19b062c04de0199c215fb6e # v2.3.7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          path-to-lcov: ${{ github.workspace }}/build/json.info.filtered.noexcept
          fail-on-error: false

  ci_test_compilers_gcc_old:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        compiler: ['4.8', '4.9', '5', '6']
    container: ghcr.io/nlohmann/json-ci:v2.4.0
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - name: Run CMake
        run: CXX=g++-${{ matrix.compiler }} cmake -S . -B build -DJSON_CI=On
      - name: Build
        run: cmake --build build --target ci_test_compiler_g++-${{ matrix.compiler }}

  ci_test_compilers_gcc:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        # older GCC docker images (4, 5, 6) fail to check out code
        compiler: ['7', '8', '9', '10', '11', '12', '13', '14', '15', 'latest']
    container: gcc:${{ matrix.compiler }}
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - name: Get latest CMake and ninja
        uses: lukka/get-cmake@f5b8fbb4d77cec1acc5a5f9f0df4beffaf5d98d9 # v4.3.4
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
        run: cmake --build build --target ci_test_compiler_default

  ci_test_compilers_clang:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        compiler: ['3.4', '3.5', '3.6', '3.7', '3.8', '3.9', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15-bullseye', '16', '17', '18', '19', '20', 'latest']
    container: silkeh/clang:${{ matrix.compiler }}
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - name: Get latest CMake and ninja
        uses: lukka/get-cmake@f5b8fbb4d77cec1acc5a5f9f0df4beffaf5d98d9 # v4.3.4
      - name: Set env FORCE_STDCPPFS_FLAG for clang 7 / 8 / 9 / 10
        run: echo "JSON_FORCED_GLOBAL_COMPILE_OPTIONS=-DJSON_HAS_FILESYSTEM=0;-DJSON_HAS_EXPERIMENTAL_FILESYSTEM=0" >> "$GITHUB_ENV"
        if: ${{ matrix.compiler == '7' || matrix.compiler == '8' || matrix.compiler == '9' || matrix.compiler == '10' }}
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
        run: cmake --build build --target ci_test_compiler_default

  ci_test_standards_gcc:
    runs-on: ubuntu-latest
    container: gcc:latest
    strategy:
      matrix:
        standard: [11, 14, 17, 20, 23, 26]
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - name: Get latest CMake and ninja
        uses: lukka/get-cmake@f5b8fbb4d77cec1acc5a5f9f0df4beffaf5d98d9 # v4.3.4
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
        run: cmake --build build --target ci_test_gcc_cxx${{ matrix.standard }}

  ci_test_standards_clang:
    runs-on: ubuntu-latest
    container: silkeh/clang:latest
    strategy:
      matrix:
        standard: [11, 14, 17, 20, 23, 26]
        stdlib: [libcxx, libstdcxx]
    steps:
      - name: Install git and unzip
        run: apt-get update ; apt-get install -y git unzip
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - name: Get latest CMake and ninja
        uses: lukka/get-cmake@f5b8fbb4d77cec1acc5a5f9f0df4beffaf5d98d9 # v4.3.4
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build with libc++
        run: cmake --build build --target ci_test_clang_libcxx_cxx${{ matrix.standard }}
        if: ${{ matrix.stdlib == 'libcxx' }}
      - name: Build with libstdc++
        run: cmake --build build --target ci_test_clang_cxx${{ matrix.standard }}
        if: ${{ matrix.stdlib == 'libstdcxx' }}

  ci_cuda_example:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        # 11.8.0: newest pre-C++20 CUDA release, exercises the C++17 fallback
        # path (tests/cuda_example/CMakeLists.txt picks the standard per nvcc
        # version); 12.1.1: permanent regression guard for #3907 (nvcc 12.0/12.1
        # choke on enable_borrowed_range at C++20, fixed in 12.2); 12.6.3: recent
        # CUDA/C++20 coverage.
        cuda: ['11.8.0', '12.1.1', '12.6.3']
    container: nvidia/cuda:${{ matrix.cuda }}-devel-ubuntu22.04
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - name: Get latest CMake and ninja
        uses: lukka/get-cmake@f5b8fbb4d77cec1acc5a5f9f0df4beffaf5d98d9 # v4.3.4
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
        run: cmake --build build --target ci_cuda_example

  ci_module_cpp20:
    strategy:
      matrix:
        container: ['gcc:latest', 'silkeh/clang:latest']
    runs-on: ubuntu-latest
    container: ${{ matrix.container }}
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      # The module test uses `import std;`, which needs CMake's experimental
      # import-std support. Its opt-in token is CMake-version-specific, so pin
      # CMake to the version whose token is set in tests/module_cpp20/CMakeLists.txt.
      - name: Get pinned CMake and ninja
        uses: lukka/get-cmake@f5b8fbb4d77cec1acc5a5f9f0df4beffaf5d98d9 # v4.3.4
        with:
          cmakeVersion: 4.3.4
      # Clang: the std library module is provided by libc++ (the image's libstdc++
      # ships none), and the image's libc++ module manifest has a broken relative
      # path — repoint it at the real module sources.
      - name: Use libc++ and fix its module manifest path (Clang)
        if: matrix.container == 'silkeh/clang:latest'
        run: |
          echo "CXXFLAGS=-stdlib=libc++" >> "$GITHUB_ENV"
          mkdir -p /usr/lib/share && ln -sf /usr/lib/llvm-*/share/libc++ /usr/lib/share/libc++
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
        run: cmake --build build --target ci_module_cpp20

  ci_icpc:
    runs-on: ubuntu-latest
    container: ghcr.io/nlohmann/json-ci:v2.2.0
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
        run: |
          . /opt/intel/oneapi/setvars.sh
          cmake --build build --target ci_icpc

  ci_icpx:
    runs-on: ubuntu-latest
    container: intel/oneapi-hpckit:latest
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
      - name: Get latest CMake and ninja
        uses: lukka/get-cmake@f5b8fbb4d77cec1acc5a5f9f0df4beffaf5d98d9 # v4.3.4
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
        run: cmake --build build --target ci_icpx

  ci_nvhpc:
    runs-on: ubuntu-latest
    container: nvcr.io/nvidia/nvhpc:25.5-devel-cuda12.9-ubuntu22.04
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
      - name: Get latest CMake and ninja
        uses: lukka/get-cmake@f5b8fbb4d77cec1acc5a5f9f0df4beffaf5d98d9 # v4.3.4
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
        run: cmake --build build --target ci_nvhpc

  ci_emscripten:
    runs-on: ubuntu-latest
    steps:
      - name: Harden Runner
        uses: step-security/harden-runner@bf7454d06d71f1098171f2acdf0cd4708d7b5920 # v2.20.0
        with:
          egress-policy: audit

      - name: Install emscripten
        uses: mymindstorm/setup-emsdk@4528d102f7230f0e7b276855c01ea1159be0e984 # v16
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - name: Get latest CMake and ninja
        uses: lukka/get-cmake@f5b8fbb4d77cec1acc5a5f9f0df4beffaf5d98d9 # v4.3.4
      - name: Run CMake
        run: cmake -S . -B build -DCMAKE_TOOLCHAIN_FILE=$EMSDK/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake -GNinja
      - name: Build
        run: cmake --build build

  ci_test_documentation:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        target: [ci_test_examples, ci_test_build_documentation]
    steps:
      - name: Harden Runner
        uses: step-security/harden-runner@bf7454d06d71f1098171f2acdf0cd4708d7b5920 # v2.20.0
        with:
          egress-policy: audit

      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - name: Run CMake
        run: cmake -S . -B build -DJSON_CI=On
      - name: Build
        run: cmake --build build --target ${{ matrix.target }}