libstacker 0.1.0

Image alignment and stacking functions based on OpenCV and Rayon
Documentation 
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name: Rust test

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

permissions:
  contents: read

jobs:
  build:
    strategy:
      matrix:
        os: [ubuntu-latest]
        linkage:
          - dynamic
        rust: [stable]
    runs-on: ${{ matrix.os }}

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

      - name: Setup Rust
        uses: dtolnay/rust-toolchain@stable
        with:
          toolchain: ${{ matrix.rust }}
          components: clippy

      - name: Install OpenCV build dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y \
            build-essential cmake git pkg-config \
            libgtk-3-dev \
            libavcodec-dev libavformat-dev libswscale-dev \
            libtbb-dev \
            clang libclang-dev

      # Clone OpenCV repositories with error handling
      - name: Clone OpenCV repositories
        run: |
          set -e  # Exit immediately on error
          OPENCV_VERSION=4.12.0
          git clone --depth 1 --branch $OPENCV_VERSION https://github.com/opencv/opencv.git
          git clone --depth 1 --branch $OPENCV_VERSION https://github.com/opencv/opencv_contrib.git
          mkdir -p opencv/build
          ls -l opencv/CMakeLists.txt

      # Create opencv_install directory (even if empty)
      - name: Prepare OpenCV install directory
        run: mkdir -p "${{ github.workspace }}/opencv_install"

      # Cache OpenCV build (now using workspace paths)
      - name: Cache OpenCV build
        id: opencv-cache
        uses: actions/cache@v3
        with:
          path: |
            opencv/build
            ${{ github.workspace }}/opencv_install
          key: opencv-${{ runner.os }}-${{ hashFiles('opencv/CMakeLists.txt') }}-4.12.0

      # Build OpenCV if cache miss
      - name: Build OpenCV from source
        if: steps.opencv-cache.outputs.cache-hit != 'true'
        run: |
          set -e  # Exit immediately on error
          mkdir -p "${{ github.workspace }}/opencv_install"
          cd "${{ github.workspace }}/opencv/build"
          cmake \
            -DCMAKE_BUILD_TYPE=RELEASE \
            -DCMAKE_INSTALL_PREFIX="${{ github.workspace }}/opencv_install" \
            -DOPENCV_EXTRA_MODULES_PATH="${{ github.workspace }}/opencv_contrib/modules" \
            -DBUILD_opencv_world=ON \
            -DBUILD_TESTS=OFF \
            -DBUILD_EXAMPLES=OFF \
            "${{ github.workspace }}/opencv"
          make -j$(nproc)
          make install

      - name: Set OpenCV env vars
        run: |
          echo "PKG_CONFIG_PATH=${{ github.workspace }}/opencv_install/lib/pkgconfig" >> $GITHUB_ENV
          echo "OPENCV_INCLUDE_PATHS=${{ github.workspace }}/opencv_install/include/opencv4" >> $GITHUB_ENV
          echo "OPENCV_LINK_LIBS=opencv_world" >> $GITHUB_ENV
          echo "OPENCV_LINK_PATHS=${{ github.workspace }}/opencv_install/lib" >> $GITHUB_ENV
          # Add LD_LIBRARY_PATH for runtime linking
          echo "LD_LIBRARY_PATH=${{ github.workspace }}/opencv_install/lib:$LD_LIBRARY_PATH" >> $GITHUB_ENV

      - name: Install cargo-deny
        run: cargo install cargo-deny

      - name: Run cargo-deny
        run: cargo deny check

      - name: Clippy
        run: cargo clippy  --all --all-targets --features "clang-runtime"

      - name: Build
        run: cargo build --verbose --all --all-targets --features "clang-runtime"

      - name: Run tests
        run: cargo test --verbose --features "clang-runtime"