cross.yml

name: cross

on:
  pull_request:
  push:
    paths-ignore:
      - '.github/ISSUE_TEMPLATE/**'
    branches:
      - master

env:
  RUSTFLAGS: -Dwarnings
  LLVM-MINGW-TOOLCHAIN-NAME: llvm-mingw-20220906-ucrt-ubuntu-18.04-x86_64

jobs:
  check:
    strategy:
      matrix:
        #
        # i686 cross compilation requires mingw packages that are configured
        # to use DWARF-2 exception handling (vice SJLJ).
        #
        # The mingw package ecosystem is fragmented so we avoid that target
        # for now. (e.g. macOS hosts will require mingw recompile)
        #
        # See also:
        # https://github.com/rust-lang/rust/issues/79577
        # https://sourceforge.net/p/mingw-w64/wiki2/Exception%20Handling
        #
        image: [macos-latest, ubuntu-latest]
        version: [stable, nightly]
        target: [x86_64-pc-windows-gnu, aarch64-pc-windows-gnullvm, x86_64-pc-windows-gnullvm, i686-pc-windows-gnullvm]
    runs-on: ${{ matrix.image }}

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Add toolchain target
        run: rustup target add ${{ matrix.target }}
        if: contains(matrix.target, 'gnullvm') == false

      - name: Add nightly toolchain with gnullvm target
        run: |
          rustup default ${{ matrix.version }}
          rustup target add ${{ matrix.target }}
        if: startsWith(matrix.image, 'ubuntu-') && contains(matrix.target, 'gnullvm') && matrix.version == 'nightly'

      - name: Install gcc-mingw-w64-x86-64
        run: sudo apt-get install -y gcc-mingw-w64-x86-64
        if: startsWith(matrix.image, 'ubuntu-') && matrix.target == 'x86_64-pc-windows-gnu'

      - name: Install mingw-w64
        run: brew install mingw-w64
        if: startsWith(matrix.image, 'macos-') && matrix.target == 'x86_64-pc-windows-gnu'

      - name: LLVM MinGW toolchain cache configuration
        id: cache-llvm-mingw-toolchain
        uses: actions/cache@v4
        if: startsWith(matrix.image, 'ubuntu-') && contains(matrix.target, 'gnullvm') && matrix.version == 'nightly'
        with:
          path: ${{ env.LLVM-MINGW-TOOLCHAIN-NAME }}
          key: ${{ env.LLVM-MINGW-TOOLCHAIN-NAME }}

      - name: Install LLVM MinGW toolchain
        if: startsWith(matrix.image, 'ubuntu-') && contains(matrix.target, 'gnullvm') && matrix.version == 'nightly' && steps.cache-llvm-mingw-toolchain.outputs.cache-hit != 'true'
        run: |
          curl -L -o ${{ env.LLVM-MINGW-TOOLCHAIN-NAME }}.tar.xz https://github.com/mstorsjo/llvm-mingw/releases/download/20220906/${{ env.LLVM-MINGW-TOOLCHAIN-NAME }}.tar.xz
          tar -xf ${{ env.LLVM-MINGW-TOOLCHAIN-NAME }}.tar.xz
          echo "${{ env.LLVM-MINGW-TOOLCHAIN-NAME }}/bin" >> $GITHUB_PATH
          
      - name: Add LLVM MinGW toolchain to PATH
        if: startsWith(matrix.image, 'ubuntu-') && contains(matrix.target, 'gnullvm') && matrix.version == 'nightly'
        run: |
          echo "${{ env.LLVM-MINGW-TOOLCHAIN-NAME }}/bin" >> $GITHUB_PATH

      - name: Test
        shell: pwsh
        run: |
          cargo test --no-run --target ${{ matrix.target }} -p test_win32
          if (-Not (Resolve-Path "target/*/debug/deps/test_win32-*.exe" | Test-Path)) {
            throw "Failed to find test_win32 executable."
          }
        if: contains(matrix.target, 'gnullvm') == false

      - name: Test gnullvm
        shell: pwsh
        run: |
          cargo test --no-run --target ${{ matrix.target }} -p test_win32
          if (-Not (Resolve-Path "target/*/debug/deps/test_win32-*.exe" | Test-Path)) {
            throw "Failed to find test_win32 executable."
          }
        if: startsWith(matrix.image, 'ubuntu-') && contains(matrix.target, 'gnullvm') && matrix.version == 'nightly'