ncnn/.github/workflows/watchos.yml

name: watchos
on:
  push:
    branches: [master]
    paths:
    - '.github/workflows/watchos.yml'
    - 'toolchains/ios.toolchain.cmake'
    - 'CMakeLists.txt'
    - 'cmake/**'
    - 'src/*'
    - 'src/layer/*'
    - 'src/layer/arm/**'
    - 'src/layer/x86/**'
  pull_request:
    branches: [master]
    paths:
    - '.github/workflows/watchos.yml'
    - 'toolchains/ios.toolchain.cmake'
    - 'CMakeLists.txt'
    - 'cmake/**'
    - 'src/*'
    - 'src/layer/*'
    - 'src/layer/arm/**'
    - 'src/layer/x86/**'
concurrency:
  group: watchos-${{ github.ref }}
  cancel-in-progress: true
env:
  DEVELOPER_DIR: /Applications/Xcode_16.4.0.app/Contents/Developer
  WATCHOS_DEPLOYMENT_TARGET: '6.0'
  ENABLE_BITCODE: OFF
  ENABLE_ARC: OFF
  ENABLE_VISIBILITY: OFF
permissions:
  contents: read

jobs:
  build:
    runs-on: macos-15-intel
    env:
      OPENMP_VERSION: '18.1.2'
      OPENMP_CMAKE_OPTIONS: |
        -DCMAKE_TOOLCHAIN_FILE=../../toolchains/ios.toolchain.cmake \
        -DDEPLOYMENT_TARGET=$WATCHOS_DEPLOYMENT_TARGET \
        -DENABLE_BITCODE=$ENABLE_BITCODE \
        -DENABLE_ARC=$ENABLE_ARC \
        -DENABLE_VISIBILITY=$ENABLE_VISIBILITY \
        -DCMAKE_INSTALL_PREFIX=install \
        -DCMAKE_BUILD_TYPE=Release \
        -DLIBOMP_ENABLE_SHARED=OFF \
        -DLIBOMP_OMPT_SUPPORT=OFF \
        -DLIBOMP_USE_HWLOC=OFF \

      NCNN_CMAKE_OPTIONS: |
        -DCMAKE_TOOLCHAIN_FILE=../toolchains/ios.toolchain.cmake \
        -DDEPLOYMENT_TARGET=$WATCHOS_DEPLOYMENT_TARGET \
        -DENABLE_BITCODE=$ENABLE_BITCODE \
        -DENABLE_ARC=$ENABLE_ARC \
        -DENABLE_VISIBILITY=$ENABLE_VISIBILITY \
        -DCMAKE_INSTALL_PREFIX=install \
        -DCMAKE_BUILD_TYPE=Release \
        -DOpenMP_C_FLAGS="-Xclang -fopenmp" -DOpenMP_CXX_FLAGS="-Xclang -fopenmp" \
        -DOpenMP_C_LIB_NAMES="libomp" -DOpenMP_CXX_LIB_NAMES="libomp" \
        -DOpenMP_libomp_LIBRARY="libomp.a" \

    steps:
    - uses: actions/checkout@v7

    - name: cache-openmp
      id: cache-openmp
      uses: actions/cache@v6
      with:
        path: openmp-install
        key: openmp-watchos-install-20251004
    - name: openmp
      if: steps.cache-openmp.outputs.cache-hit != 'true'
      run: |
        wget https://github.com/llvm/llvm-project/releases/download/llvmorg-${{ env.OPENMP_VERSION }}/cmake-${{ env.OPENMP_VERSION }}.src.tar.xz
        tar -xf cmake-${{ env.OPENMP_VERSION }}.src.tar.xz
        wget https://github.com/llvm/llvm-project/releases/download/llvmorg-${{ env.OPENMP_VERSION }}/openmp-${{ env.OPENMP_VERSION }}.src.tar.xz
        tar -xf openmp-${{ env.OPENMP_VERSION }}.src.tar.xz
        mv cmake-${{ env.OPENMP_VERSION }}.src/Modules/* openmp-${{ env.OPENMP_VERSION }}.src/cmake/
        cd openmp-${{ env.OPENMP_VERSION }}.src
        wget https://github.com/nihui/llvm-project/commit/ef8c35bcf5d9cfdb0764ffde6a63c04ec715bc37.patch
        patch -p2 -i ef8c35bcf5d9cfdb0764ffde6a63c04ec715bc37.patch
        wget https://github.com/nihui/llvm-project/commit/5c12711f9a21f41bea70566bf15a4026804d6b20.patch
        patch -p2 -i 5c12711f9a21f41bea70566bf15a4026804d6b20.patch
    - name: openmp-armv7k
      if: steps.cache-openmp.outputs.cache-hit != 'true'
      run: |
        cd openmp-${{ env.OPENMP_VERSION }}.src
        mkdir -p build-armv7k && cd build-armv7k
        cmake ${{ env.OPENMP_CMAKE_OPTIONS }} -DPLATFORM=WATCHOS -DARCHS="armv7k" ..
        cmake --build . -j 4
        cmake --build . --target install
    - name: openmp-arm64_32
      if: steps.cache-openmp.outputs.cache-hit != 'true'
      run: |
        cd openmp-${{ env.OPENMP_VERSION }}.src
        mkdir -p build-arm64_32 && cd build-arm64_32
        cmake ${{ env.OPENMP_CMAKE_OPTIONS }} -DPLATFORM=WATCHOS -DARCHS="arm64_32" ..
        cmake --build . -j 4
        cmake --build . --target install
    - name: openmp-simulator-x86_64
      if: steps.cache-openmp.outputs.cache-hit != 'true'
      run: |
        cd openmp-${{ env.OPENMP_VERSION }}.src
        mkdir -p build-simulator-x86_64 && cd build-simulator-x86_64
        cmake ${{ env.OPENMP_CMAKE_OPTIONS }} -DPLATFORM=SIMULATOR_WATCHOS -DARCHS="x86_64" ..
        cmake --build . -j 4
        cmake --build . --target install
    - name: openmp-simulator-arm64
      if: steps.cache-openmp.outputs.cache-hit != 'true'
      run: |
        cd openmp-${{ env.OPENMP_VERSION }}.src
        mkdir -p build-simulator-arm64 && cd build-simulator-arm64
        cmake ${{ env.OPENMP_CMAKE_OPTIONS }} -DPLATFORM=SIMULATOR_WATCHOS -DARCHS="arm64" ..
        cmake --build . -j 4
        cmake --build . --target install
    - name: openmp-merge-fat-library
      if: steps.cache-openmp.outputs.cache-hit != 'true'
      run: |
        mkdir -p $GITHUB_WORKSPACE/openmp-install
        mkdir -p $GITHUB_WORKSPACE/openmp-install/watchos
        mkdir -p $GITHUB_WORKSPACE/openmp-install/watchos-simulator

        cp -a openmp-${{ env.OPENMP_VERSION }}.src/build-arm64_32/install/include $GITHUB_WORKSPACE/openmp-install/watchos
        mkdir -p $GITHUB_WORKSPACE/openmp-install/watchos/lib
        lipo -create \
            openmp-${{ env.OPENMP_VERSION }}.src/build-armv7k/install/lib/libomp.a \
            openmp-${{ env.OPENMP_VERSION }}.src/build-arm64_32/install/lib/libomp.a \
            -o $GITHUB_WORKSPACE/openmp-install/watchos/lib/libomp.a

        cp -a openmp-${{ env.OPENMP_VERSION }}.src/build-simulator-x86_64/install/include $GITHUB_WORKSPACE/openmp-install/watchos-simulator
        mkdir -p $GITHUB_WORKSPACE/openmp-install/watchos-simulator/lib
        lipo -create \
            openmp-${{ env.OPENMP_VERSION }}.src/build-simulator-x86_64/install/lib/libomp.a \
            openmp-${{ env.OPENMP_VERSION }}.src/build-simulator-arm64/install/lib/libomp.a \
            -o $GITHUB_WORKSPACE/openmp-install/watchos-simulator/lib/libomp.a

    - name: install-openmp
      run: |
        sudo cp $GITHUB_WORKSPACE/openmp-install/watchos/include/* $DEVELOPER_DIR/Platforms/WatchOS.platform/Developer/SDKs/WatchOS.sdk/usr/include
        sudo cp $GITHUB_WORKSPACE/openmp-install/watchos/lib/libomp.a $DEVELOPER_DIR/Platforms/WatchOS.platform/Developer/SDKs/WatchOS.sdk/usr/lib

        sudo cp $GITHUB_WORKSPACE/openmp-install/watchos-simulator/include/* $DEVELOPER_DIR/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator.sdk/usr/include
        sudo cp $GITHUB_WORKSPACE/openmp-install/watchos-simulator/lib/libomp.a $DEVELOPER_DIR/Platforms/WatchSimulator.platform/Developer/SDKs/WatchSimulator.sdk/usr/lib

    - name: armv7k
      run: |
        mkdir build-armv7k && cd build-armv7k
        cmake ${{ env.NCNN_CMAKE_OPTIONS }} -DPLATFORM=WATCHOS -DARCHS="armv7k" ..
        cmake --build . -j 4
    - name: arm64_32
      run: |
        mkdir build-arm64_32 && cd build-arm64_32
        cmake ${{ env.NCNN_CMAKE_OPTIONS }} -DPLATFORM=WATCHOS -DARCHS="arm64_32" ..
        cmake --build . -j 4

    - name: simulator-x86_64
      run: |
        mkdir build-simulator-x86_64 && cd build-simulator-x86_64
        cmake ${{ env.NCNN_CMAKE_OPTIONS }} -DPLATFORM=SIMULATOR_WATCHOS -DARCHS="x86_64" ..
        cmake --build . -j 4
    - name: simulator-arm64
      run: |
        mkdir build-simulator-arm64 && cd build-simulator-arm64
        cmake ${{ env.NCNN_CMAKE_OPTIONS }} -DPLATFORM=SIMULATOR_WATCHOS -DARCHS="arm64" ..
        cmake --build . -j 4