Build OpenCV (Windows, CUDA) #22
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| # GitHub Actions Workflow: Build opencv-python with CUDA support on Windows | |
| # | |
| # This workflow compiles opencv-python from source with CUDA enabled on a | |
| # GitHub-hosted Windows runner. The resulting Python wheel is then uploaded | |
| # as a build artifact. | |
| # | |
| # This is a complex and long-running process. It is configured to run only | |
| # on manual trigger (workflow_dispatch). | |
| name: Build OpenCV (Windows, CUDA) | |
| on: | |
| workflow_dispatch: | |
| jobs: | |
| build: | |
| runs-on: windows-latest | |
| defaults: | |
| run: | |
| shell: pwsh | |
| steps: | |
| - name: 📥 Checkout code | |
| uses: actions/checkout@v4 | |
| #- name: 🏗️ Install Build Dependencies | |
| # run: | | |
| # echo "Installing CMake and Ninja for building..." | |
| # choco install -y cmake ninja | |
| - name: 🐍 Set up Python | |
| uses: actions/setup-python@v5 | |
| with: | |
| python-version: '3.12' | |
| - name: 📦 Install Python Build Requirements | |
| run: | | |
| python -m pip install --upgrade pip | |
| pip install numpy wheel | |
| - name: Setup MSBuild.exe | |
| uses: microsoft/setup-msbuild@v1.1 | |
| - name: Setup NASM | |
| uses: ilammy/setup-nasm@v1 | |
| - name: 🏗️ Setup Visual Studio Developer Command Prompt | |
| run: | | |
| $vcvars_path = "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvars64.bat" | |
| $lines = Invoke-Expression "& `"$vcvars_path`" && set" | |
| $lines | ForEach-Object { | |
| if ($_ -match "=") { | |
| $name, $value = $_.Split("=", 2) | |
| echo "$name=$value" | Out-File -FilePath $env:GITHUB_ENV -Append | |
| } | |
| } | |
| shell: pwsh | |
| - name: Cache CUDA Toolkit Installer | |
| id: cache-cuda-installer | |
| uses: actions/cache@v3 | |
| with: | |
| path: ./.cache/cuda_installer.exe | |
| key: cuda-installer-12.1.1 | |
| - name: 🔧 Install NVIDIA CUDA Toolkit | |
| run: | | |
| $installer_path = "./.cache/cuda_installer.exe" | |
| if (-not (Test-Path $installer_path)) { | |
| echo "Downloading CUDA Toolkit..." | |
| $cuda_installer_url = "https://developer.download.nvidia.com/compute/cuda/12.1.1/network_installers/cuda_12.1.1_windows_network.exe" | |
| New-Item -Path (Split-Path $installer_path) -ItemType Directory -Force | |
| curl -L -o $installer_path $cuda_installer_url | |
| } else { | |
| echo "CUDA Toolkit installer found in cache." | |
| } | |
| echo "Installing CUDA Toolkit silently..." | |
| $arguments = "-s nvcc_12.1 cudart_12.1" | |
| Start-Process -FilePath $installer_path -ArgumentList $arguments -Wait -NoNewWindow | |
| echo "Adding CUDA to PATH..." | |
| $cuda_path = "C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v12.1" | |
| echo "CUDA_PATH=$cuda_path" | Out-File -FilePath $env:GITHUB_ENV -Append | |
| echo "$cuda_path\bin" | Out-File -FilePath $env:GITHUB_PATH -Append | |
| echo "$cuda_path\lib\x64" | Out-File -FilePath $env:GITHUB_PATH -Append | |
| shell: pwsh | |
| - name: Cache opencv-python repository | |
| id: cache-opencv-python | |
| uses: actions/cache@v3 | |
| # TODO: Need to pin this to a version. | |
| with: | |
| path: opencv-python | |
| key: opencv-python-master | |
| - name: Clone opencv-python repository | |
| if: steps.cache-opencv-python.outputs.cache-hit != 'true' | |
| run: | | |
| git clone --depth 1 --recursive https://github.com/opencv/opencv-python.git | |
| - name: Install opencv-python dependencies | |
| run: | | |
| pip install numpy packaging scikit-build cmake==3.24.2 | |
| # - CUDA_ARCH_BIN: Specifies the CUDA architectures to build for. | |
| # - CUDA_ARCH_PTX: Specifies the virtual architecture for forward compatibility. | |
| # TODO: Set correct PTX versions below. | |
| # TODO: Validate the built wheel can be installed and run. | |
| # TODO: Slim down the modules we build to only the ones that DVR-Scan needs to run: | |
| # https://docs.opencv.org/4.x/db/d05/tutorial_config_reference.html#tutorial_config_reference_general_modules | |
| - name: 🛠️ Build opencv-python with CUDA | |
| run: | | |
| cd opencv-python | |
| $CMAKE_ARGS = '-D CMAKE_BUILD_TYPE=RELEASE -D BUILD_SHARED_LIBS=OFF -D WITH_CUDA=ON -D CUDA_ARCH_BIN="6.0;6.1;7.0;7.5" -D CUDA_ARCH_PTX=7.5 -D OPENCV_ENABLE_NONFREE=ON -D ENABLE_LTO=ON -D CPU_DISPATCH="AVX,AVX2" -D BUILD_TESTS=OFF -D BUILD_PERF_TESTS=OFF -D BUILD_EXAMPLES=OFF -D OPENCV_EXTRA_MODULES_PATH=opencv_contrib/modules' | |
| $ENABLE_CONTRIB = 1 | |
| pip wheel . --verbose | |
| shell: pwsh | |
| - name: 📤 Upload Artifact | |
| uses: actions/upload-artifact@v4.6.0 | |
| with: | |
| name: opencv-python-cuda | |
| path: opencv-python/opencv_python*.whl |