crosscompile.yml

name: Cross compile
on:
  push:
    paths-ignore:
      - 'doc/**'
      - '**/man/*'
      - '**.md'
      - '**.rdoc'
      - '**/.document'
      - '.*.yml'
  pull_request:
    # Do not use paths-ignore for required status checks
    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks
  merge_group:

concurrency:
  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}

permissions:
  contents: read

jobs:
  make:
    name: make (${{ matrix.host }} host on ${{ matrix.build }})
    strategy:
      matrix:
        include:
          - host: aarch64-linux-gnu
            arch: arm64
            build: x86_64-linux-gnu
            runs-on: ubuntu-24.04
            file_arch: ARM aarch64
          - host: x86_64-linux-gnu
            arch: amd64
            build: aarch64-linux-gnu
            runs-on: ubuntu-24.04-arm
            file_arch: x86-64
      fail-fast: false

    env:
      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}

    runs-on: ${{ matrix.runs-on }}

    if: >-
      ${{!(false
      || contains(github.event.head_commit.message, '[DOC]')
      || contains(github.event.pull_request.title, '[DOC]')
      || contains(github.event.pull_request.labels.*.name, 'Documentation')
      || (github.event.pull_request.user.login == 'dependabot[bot]')
      )}}

    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          sparse-checkout-cone-mode: false
          sparse-checkout: /.github
          persist-credentials: false

      - uses: ./.github/actions/setup/directories
        with:
          srcdir: src
          builddir: build
          makeup: true

      - name: Install cross-compilation toolchain
        run: |
          sudo dpkg --add-architecture ${{ matrix.arch }}
          native_arch=$(dpkg --print-architecture)
          # Restrict existing sources to native arch
          sudo sed -i '/^Architectures:/d' /etc/apt/sources.list.d/ubuntu.sources
          sudo sed -i "/^Types:/a Architectures: ${native_arch}" /etc/apt/sources.list.d/ubuntu.sources
          # Add cross-arch sources
          if [ "${{ matrix.arch }}" = "arm64" ]; then
            cross_uri="http://ports.ubuntu.com/"
          else
            cross_uri="http://archive.ubuntu.com/ubuntu/"
          fi
          printf '%s\n' \
            "Types: deb" \
            "URIs: ${cross_uri}" \
            "Suites: noble noble-updates noble-security" \
            "Components: main universe" \
            "Architectures: ${{ matrix.arch }}" \
            | sudo tee /etc/apt/sources.list.d/cross-${{ matrix.arch }}.sources
          sudo apt-get update -qq
          sudo apt-get install --no-install-recommends -qq -y \
            crossbuild-essential-${{ matrix.arch }} \
            libssl-dev:${{ matrix.arch }} \
            libyaml-dev:${{ matrix.arch }} \
            zlib1g-dev:${{ matrix.arch }} \
            libffi-dev:${{ matrix.arch }} \
            libreadline-dev:${{ matrix.arch }} \
            libncurses-dev:${{ matrix.arch }} \
            autoconf ruby

      - name: Build baseruby
        run: |
          mkdir ../baseruby
          cd ../baseruby
          ../src/configure --prefix=$PWD/install --disable-install-doc
          make
          make install

      - name: Run configure
        run: >-
          ../src/configure -C --disable-install-doc
          --prefix=/usr
          --build=${{ matrix.build }}
          --host=${{ matrix.host }}
          --with-baseruby=$PWD/../baseruby/install/bin/ruby

      - run: make

      - run: make install DESTDIR=$PWD/install

      - name: Verify cross-compiled binary
        run: |
          file install/usr/bin/ruby
          file install/usr/bin/ruby | grep -q '${{ matrix.file_arch }}'

      - uses: ./.github/actions/slack
        with:
          label: cross ${{ matrix.host }}
          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
        if: ${{ failure() }}

defaults:
  run:
    working-directory: build