Linux, standard builds

  linux:
    runs-on: ubuntu-latest

    strategy:
      fail-fast: false
      matrix:
        perl-version:
          - '5.36'
          - '5.34'
          - '5.32'
          - '5.30'
          - '5.28'
          - '5.26'
          - '5.24'
          - '5.22'
          - '5.20'
          - '5.18'
          - '5.16'
          - '5.14'
          - '5.12'
          - '5.10'

    container:
      image: perldocker/perl-tester:${{ matrix.perl-version }}

    steps:
      - uses: actions/checkout@main
        with:
            submodules: recursive
      - run: perl -V
      - run: cpanm --notest --installdeps --verbose .
      - run: perl Makefile.PL
      - run: make
      - run: prove -wlvmb t

Assuming your module only depends on CPAN modules, the above will test it against all standard perls from 5.10 to 5.36.

External Dependencies

At some point early in your steps, add apt install -y ..., where ... is your list of apt packages to install.

Coverage Testing via Coveralls

Under matrix, include this:

        include:
          - perl-version: '5.32'   # or whichever version you want to scope this to
            os: ubuntu-latest
            coverage: true

… then, instead of the prove line in the original steps, do:

      - name: Run Tests (no coverage)
        if: ${{ !matrix.coverage }}
        run: make test
      - name: Run tests (with coverage)
        if: ${{ matrix.coverage }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          cpanm -n Devel::Cover::Report::Coveralls
          cover -test -report Coveralls

Then, ensure that Coveralls is set up to receive coverage reports from your repository.

macOS

Even easier than Linux:

  macOS:
    runs-on: macOS-latest

… then the same steps as above.

External Dependencies

brew install ... where on Linux you did apt.

Windows

As easy as macOS:

  windows:
    runs-on: windows-latest

External Dependencies

Use Chocolatey; however, I’ve not gotten this to work for, e.g., linking XS modules against other C libraries.

Linux, Big-Endian

The magic of QEMU makes this possible …

  big-endian:
    runs-on: ubuntu-latest

    steps:
      - name: Get the qemu container
        run: docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
      - name: Run tests on s390x/ubuntu
        run: docker run --rm --interactive s390x/ubuntu bash -c "apt update; apt install -y git cpanminus make; git clone --recurse-submodules $GITHUB_SERVER_URL/$GITHUB_REPOSITORY; cd $( echo $GITHUB_REPOSITORY | cut -d/ -f2 ); cpanm --notest --installdeps --verbose .; perl Makefile.PL; make; prove -wlvmb t"

Linux, 32-bit

Just tweak the big-endian example above to say arm32v7 rather than s390x.

Linux, musl libc

Sometimes it’s useful to test against “alternative” libc implementations. Alpine Linux has you covered:

  musl:
    runs-on: ubuntu-latest
    
    container:
      image: alpine
      
    steps:
      - run: apk add perl-app-cpanminus
      # ...

Linux, long-double & quadmath

Via unofficial builds courtesy of simcop2387:

  linux-alt-perl:
    runs-on: ubuntu-latest

    strategy:
      fail-fast: false
      matrix:
        perl-version:
          - '5.020.003-main-longdouble-buster'
          - '5.020.003-main-quadmath-buster'

    container:
      image: simcop2387/perl-tester:${{ matrix.perl-version }}

    steps:

… with the same steps you usually do.

Check simcop2387’s perl containers for possible values of perl-version.

Cygwin

  cygwin:
    runs-on: windows-latest

    steps:
      - name: Set up Cygwin
        uses: cygwin/cygwin-install-action@master
        with:
            packages: perl_base perl-ExtUtils-MakeMaker make gcc-g++ libcrypt-devel libnsl-devel bash
      - uses: actions/checkout@main
        with:
          submodules: recursive
      - shell: C:\cygwin\bin\bash.exe --login --norc -eo pipefail -o igncr '{0}'
        run: |
            perl -V
            cpan -T App::cpanminus
            cd $GITHUB_WORKSPACE
            cpanm --verbose --notest --installdeps --with-configure --with-develop .
            perl Makefile.PL
            make test

Note the with.packages; see Cygwin’s package repository for names of available packages. (Unlike plain Windows, this does work seamlessly to text XS modules’ integrations with external C libraries.)

FreeBSD & OpenBSD

  BSDs:
    runs-on: macos-latest
  
    strategy:
      fail-fast: false
      matrix:
        os:
          - name: freebsd
            version: '13.0'
            pkginstall: pkg install -y p5-ExtUtils-MakeMaker
          - name: openbsd
            version: '7.1'
            pkginstall: pkg_add p5-ExtUtils-MakeMaker

    steps:
      - uses: actions/checkout@main
        with:
          submodules: recursive
      - name: Test on ${{ matrix.os.name }}
        uses: cross-platform-actions/action@master
        with:
          operating_system: ${{ matrix.os.name }}
          version: ${{ matrix.os.version }}
          shell: bash
          run: |
            sudo ${{ matrix.os.pkginstall }}
            curl -L https://cpanmin.us | sudo perl - --verbose --notest --installdeps --with-configure --with-develop .
            perl Makefile.PL
            make
            prove -wlvmb t

Note the pkginstall option to install any external dependencies; it may not be needed for your case.

Also, FreeBSD does have a p5-App-cpanminus port, but OpenBSD has no such port.

FGasper/perl-github-action-tips

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