OpenCVBuild.yml

# OpenCVBuild.yml
name: OpenCVBuild

env:
  PROJECT_DIR: examples_for_PC/CMake_OpenCV


on:
  push:
    paths:
    - '**.ino'
    - '**.cpp'
    - '**.hpp'
    - '**.h'
    - '**.c'
    - '**OpenCVBuild.yml'
    - '**OpenCV.cmake'
    - '**installOpenCV.bat'
  pull_request:

#  workflow_dispatch:

jobs:

  LGFXOpenCV:

    name: LGFXOpenCV (${{ matrix.os }})

    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: true
      matrix:
        include:
          - { os: windows-latest, OpenCV_DIR: "D:/a/LovyanGFX/LovyanGFX/opencv-4.5.5/opencv/build/" }
          - { os: macos-latest,   OpenCV_DIR: "/usr/local/Cellar/opencv/4.5.5_2/" }
          - { os: ubuntu-latest,  OpenCV_DIR: "/home/runner/work/LovyanGFX/LovyanGFX/opencv-install/opencv/build" }

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

      - name: 🪟 📦 Use GNU tar instead BSD tar
        if: matrix.os == 'windows-latest'
        shell: cmd
        run: echo C:\Program Files\Git\usr\bin>>"%GITHUB_PATH%"

      - name: 🪟 📦 Cache OpenCV for Windows
        if: ${{ matrix.os == 'windows-latest' }}
        uses: actions/cache@v3
        id: cache-opencv-windows
        with:
          path: D:\a\LovyanGFX\LovyanGFX\opencv-4.5.5\
          key: ${{ matrix.os }}-opencv-cache

      - name: 🪟 🏗️ Build+Install OpenCV for Windows
        if: matrix.os == 'windows-latest' && steps.cache-opencv-windows.outputs.cache-hit != 'true'
        shell: pwsh
        run: |
          .github/scripts/installOpenCV.bat
          Remove-Item -Recurse -Force ${{ matrix.OpenCV_DIR }}modules

      - name: 🪟 🏗️ Build LGFXOpenCV example for Windows
        if: matrix.os == 'windows-latest'
        env:
          OpenCV_DIR: ${{ matrix.OpenCV_DIR }}
          CC: clang
          CXX: clang++
        run: |
          Get-PSDrive
          cp .github/scripts/OpenCV.cmake ${{ env.PROJECT_DIR }}/CMakeLists.txt
          cd ${{ env.PROJECT_DIR }}
          mkdir build
          cd build
          cmake -G "Visual Studio 17 2022" -A x64 -T ClangCL ..
          cmake --build . --config Debug

      - name: 🐧 📦 Cache OpenCV for Linux
        if: matrix.os == 'ubuntu-latest'
        uses: actions/cache@v3
        id: cache-opencv-linux
        with:
          path: /home/runner/work/LovyanGFX/LovyanGFX/opencv-install
          key: ${{ matrix.os }}-opencv-cache

      - name: 🐧 🏗️ Install OpenCV for Linux
        if: matrix.os == 'ubuntu-latest'
        uses: rayandrews/with-opencv-action@v1
        with:
          dir: /home/runner/work/LovyanGFX/LovyanGFX/opencv-install
          cached: ${{ steps.cache-opencv-linux.outputs.cache-hit }}
          BUILD_EXAMPLES: false
          INSTALL_C_EXAMPLES: false
          INSTALL_PYTHON_EXAMPLES: false
          opencv-version: '4.5.5'


      - name: 🍏 📦 🍺 Cache brew deps for MacOS
        if: matrix.os == 'macos-latest'
        uses: actions/cache@v3
        id: cache-opencv-macosx
        with:
          # Paths to cache:
          # /usr/local/Homebrew - installation folder of Homebrew
          # /usr/local/Cellar - installation folder of Homebrew formulae
          # /usr/local/Frameworks, /usr/local/bin, /usr/local/opt - contain (links to) binaries installed by Homebrew formulae
          # /usr/local/lib/python3.8 - Python3 packages installation
          path: |
            /usr/local/Homebrew
            /usr/local/Cellar
            /usr/local/Frameworks
            /usr/local/bin
            /usr/local/opt
            /usr/local/lib/python3.8
          key: ${{ matrix.os }}-opencv

      - name: 🍏 🍺 Install OpenCV+CMake brew packages for MacOS
        if: matrix.os == 'macos-latest' && steps.cache-opencv-macosx.outputs.cache-hit != 'true'
        env:
          HOMEBREW_NO_AUTO_UPDATE: 1
        run: brew install opencv cmake

      - name: 🐧/🍏 🏗️ Build LGFXOpenCV example for Linux/MacOS
        if: matrix.os != 'windows-latest'
        env:
          OpenCV_DIR: ${{ matrix.OpenCV_DIR }}
        run: |
          cp .github/scripts/OpenCV.cmake ${{ env.PROJECT_DIR }}/CMakeLists.txt
          cd ${{ env.PROJECT_DIR }}
          mkdir build
          cd build
          cmake ..
          cmake --build .