rust.yml

name: Rust CI

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]
  schedule:
    - cron: '5 16 * * 6'

jobs:
  test:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        rust: ["1.67.1", nightly, beta, stable]
    steps:
    - uses: actions/checkout@v4
    - uses: dtolnay/rust-toolchain@v1
      with:
        toolchain: ${{ matrix.rust }}
    - name: Install MSRV Cargo.lock
      if: ${{ matrix.rust == '1.67.1' }}
      run: mv Cargo.lock.msrv Cargo.lock
    - name: Cache Cargo Dependencies
      uses: Swatinem/rust-cache@v2
      with:
        cache-on-failure: true
    - name: build
      run: cargo build -v
    - name: test
      run: cargo test -v && cargo doc -v

  test_big_endian:
    # github actions does not support big endian systems directly, but it does support QEMU.
    # so we install qemu, then build and run the tests in an emulated mips system.
    # note: you can also use this approach to test for big endian locally.
    runs-on: ubuntu-latest

    # we are using the cross project for cross compilation to mips:
    # https://github.com/cross-rs/cross
    steps:
      - uses: actions/checkout@v4

      - name: Install or use cached cross-rs/cross
        uses: baptiste0928/cargo-install@v1
        with:
          crate: cross

      - name: Cache Cargo Dependencies
        uses: Swatinem/rust-cache@v2
        with:
          cache-on-failure: true

      - name: Start Docker (required for cross-rs)
        run: sudo systemctl start docker

      - name: Cross-Compile project to powerpc-unknown-linux-gnu
        run: |
          cross build --target=powerpc-unknown-linux-gnu --verbose -v --no-default-features --features "$FEATURES"
        env:
          FEATURES: ${{ matrix.features }}

      # https://github.com/cross-rs/cross#supported-targets
      - name: Cross-Run Tests in powerpc-unknown-linux-gnu using Qemu
        continue-on-error: true
        run: |
          cross test --target powerpc-unknown-linux-gnu --verbose -v --no-default-features --features "$FEATURES"
        env:
          FEATURES: ${{ matrix.features }}

  clippy:
    runs-on: ubuntu-latest
    steps:
    - name: install-dependencies
      run: sudo apt update && sudo apt install ninja-build meson nasm
    - uses: actions/checkout@v4
    - uses: dtolnay/rust-toolchain@stable
      with:
        components: clippy
    - run: cargo clippy --all-features -- -D warnings
      env:
        SYSTEM_DEPS_DAV1D_BUILD_INTERNAL: always

  build_benchmarks:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - uses: dtolnay/rust-toolchain@nightly
    - name: build
      run: cargo build -v --benches

  rustfmt:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - uses: dtolnay/rust-toolchain@stable
      with:
        components: rustfmt
    - name: Run rustfmt check
      run: cargo fmt -- --check

  verify_msrv:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - name: Install or use cached `cargo-msrv`
      uses: baptiste0928/cargo-install@v1
      with:
        crate: cargo-msrv
    - name: Install MSRV Cargo.lock
      run: mv Cargo.lock.msrv Cargo.lock
    - name: Cache Cargo Dependencies
      uses: Swatinem/rust-cache@v2
      with:
        cache-on-failure: true
    - name: Verify Minimum Rust Version
      run: cargo-msrv verify