name: clang syntax checks
on:
  push:
    branches: [ master, development, pull-request/* ]
    paths:
      - '.github/workflows/**'
      - 'include/**'
      - 'test/**'
      - 'CMakeLists.txt'
      - 'cmake/**'
      - 'BUILD.bazel'
      - 'MODULE.bazel*'
      - 'meson.build'
      - 'meson_options.txt'
      - 'subprojects/**'
      - '.devcontainer/**'
  pull_request:
    branches: [ master, development, pull-request/* ]
    types: [opened, synchronize, reopened]
    paths:
      - '.github/workflows/**'
      - 'include/**'
      - 'test/**'
      - 'CMakeLists.txt'
      - 'cmake/**'
      - 'BUILD.bazel'
      - 'MODULE.bazel*'
      - 'meson.build'
      - 'meson_options.txt'
      - 'subprojects/**'
      - '.devcontainer/**'

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

jobs:
  build-clang-cpp03-linux-STL:
    name: Syntax Check - Clang C++03 Linux STL
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=03 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp03-linux-No-STL:
    name: Syntax Check - Clang C++03 Linux No STL
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=03 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp11-linux-STL:
    name: Syntax Check - Clang C++11 Linux STL
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=11 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp11-linux-No-STL:
    name: Syntax Check - Clang C++11 Linux No STL
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=11 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp11-linux-STL-Force-CPP03:
    name: Syntax Check - Clang C++11 Linux STL Force C++03
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=ON -DETL_CXX_STANDARD=11 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp11-linux-No-STL-Force-CPP03:
    name: Syntax Check - Clang C++11 Linux No STL Force C++03
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=ON -DETL_CXX_STANDARD=11 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp14-linux-STL:
    name: Syntax Check - Clang C++14 Linux STL
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=14 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp14-linux-No-STL:
    name: Syntax Check - Clang C++14 Linux No STL
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=14 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp14-linux-STL-Force-CPP03:
    name: Syntax Check - Clang C++14 Linux STL Force C++03
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=ON -DETL_CXX_STANDARD=14 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp14-linux-No-STL-Force-CPP03:
    name: Syntax Check - Clang C++14 Linux No STL Force C++03
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=ON -DETL_CXX_STANDARD=14 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp17-linux-STL:
    name: Syntax Check - Clang C++17 Linux STL
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=17 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp17-linux-No-STL:
    name: Syntax Check - Clang C++17 Linux No STL
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=17 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp17-linux-STL-Force-CPP03:
    name: Syntax Check - Clang C++17 Linux STL Force C++03
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=ON -DETL_CXX_STANDARD=17 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp17-linux-No-STL-Force-CPP03:
    name: Syntax Check - Clang C++17 Linux No STL Force C++03
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=ON -DETL_CXX_STANDARD=17 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp20-linux-STL:
    name: Syntax Check - Clang C++20 Linux STL
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=20 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp20-linux-No-STL:
    name: Syntax Check - Clang C++20 Linux No STL
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=20 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp20-linux-STL-Force-CPP03:
    name: Syntax Check - Clang C++20 Linux STL Force C++03
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=ON -DETL_CXX_STANDARD=20 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp20-linux-No-STL-Force-CPP03:
    name: Syntax Check - Clang C++20 Linux No STL Force C++03
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=ON -DETL_CXX_STANDARD=20 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp23-linux-STL:
    name: Syntax Check - Clang C++23 Linux STL
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=23 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp23-linux-No-STL:
    name: Syntax Check - Clang C++23 Linux No STL
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=23 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp23-linux-STL-Force-CPP03:
    name: Syntax Check - Clang C++23 Linux STL Force C++03
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=ON -DETL_CXX_STANDARD=23 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp23-linux-No-STL-Force-CPP03:
    name: Syntax Check - Clang C++23 Linux No STL Force C++03
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-22.04]

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build
      run: |
        export CC=clang
        export CXX=clang++
        cmake -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=ON -DETL_CXX_STANDARD=23 ./test/syntax_check
        clang --version
        make -j "$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp26-linux-STL:
    name: Syntax Check - Clang C++26 Linux STL
    runs-on: ubuntu-24.04

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build Docker image
      run: docker build -t etl-ubuntu-2604 -f .devcontainer/ubuntu-26.04/Dockerfile .

    - name: Build
      run: |
        docker run --rm --user root -v ${{ github.workspace }}:/workspaces/etl etl-ubuntu-2604 bash -c "\
          cd /workspaces/etl && \
          export CC=clang && \
          export CXX=clang++ && \
          cmake -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=26 ./test/syntax_check && \
          clang++ --version && \
          make -j \$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp26-linux-No-STL:
    name: Syntax Check - Clang C++26 Linux No STL
    runs-on: ubuntu-24.04

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build Docker image
      run: docker build -t etl-ubuntu-2604 -f .devcontainer/ubuntu-26.04/Dockerfile .

    - name: Build
      run: |
        docker run --rm --user root -v ${{ github.workspace }}:/workspaces/etl etl-ubuntu-2604 bash -c "\
          cd /workspaces/etl && \
          export CC=clang && \
          export CXX=clang++ && \
          cmake -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=26 ./test/syntax_check && \
          clang++ --version && \
          make -j \$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp26-linux-STL-Force-CPP03:
    name: Syntax Check - Clang C++26 Linux STL Force C++03
    runs-on: ubuntu-24.04

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build Docker image
      run: docker build -t etl-ubuntu-2604 -f .devcontainer/ubuntu-26.04/Dockerfile .

    - name: Build
      run: |
        docker run --rm --user root -v ${{ github.workspace }}:/workspaces/etl etl-ubuntu-2604 bash -c "\
          cd /workspaces/etl && \
          export CC=clang && \
          export CXX=clang++ && \
          cmake -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=ON -DETL_CXX_STANDARD=26 ./test/syntax_check && \
          clang++ --version && \
          make -j \$(getconf _NPROCESSORS_ONLN)"

  build-clang-cpp26-linux-No-STL-Force-CPP03:
    name: Syntax Check - Clang C++26 Linux No STL Force C++03
    runs-on: ubuntu-24.04

    steps:
    - uses: actions/checkout@v6.0.3

    - name: Build Docker image
      run: docker build -t etl-ubuntu-2604 -f .devcontainer/ubuntu-26.04/Dockerfile .

    - name: Build
      run: |
        docker run --rm --user root -v ${{ github.workspace }}:/workspaces/etl etl-ubuntu-2604 bash -c "\
          cd /workspaces/etl && \
          export CC=clang && \
          export CXX=clang++ && \
          cmake -DNO_STL=ON -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=ON -DETL_CXX_STANDARD=26 ./test/syntax_check && \
          clang++ --version && \
          make -j \$(getconf _NPROCESSORS_ONLN)"