Building OpenCV for APT

opencv_js.config.py

# Classes and methods whitelist

core = {
    '': [
        'absdiff', 'add', 'addWeighted', 'bitwise_and', 'bitwise_not', 'bitwise_or', 'bitwise_xor', 'cartToPolar',
        'compare', 'convertScaleAbs', 'copyMakeBorder', 'countNonZero', 'determinant', 'dft', 'divide', 'eigen',
        'exp', 'flip', 'getOptimalDFTSize','gemm', 'hconcat', 'inRange', 'invert', 'kmeans', 'log', 'magnitude',
        'max', 'mean', 'meanStdDev', 'merge', 'min', 'minMaxLoc', 'mixChannels', 'multiply', 'norm', 'normalize',
        'perspectiveTransform', 'polarToCart', 'pow', 'randn', 'randu', 'reduce', 'repeat', 'rotate', 'setIdentity', 'setRNGSeed',
        'solve', 'solvePoly', 'split', 'sqrt', 'subtract', 'trace', 'transform', 'transpose', 'vconcat',
        'setLogLevel', 'getLogLevel', 'findNonZero'
    ],
    'Algorithm': [],
}

imgproc = {
    '': [
        'cvtColor',
        'matchTemplate',
        'rectangle',
        'resize',
        'threshold',
        'pyrDown',
    ],
}

objdetect = {
    '': ['groupRectangles'],
}

white_list = makeWhiteList([core, imgproc, objdetect])

run.sh

# git clone https://github.com/opencv/opencv.git --depth 1 --branch 4.7.0
# cd ./opencv

podman run --rm -v $(pwd):/src -u $(id -u):$(id -g) docker.io/emscripten/emsdk \
  emcmake python3 ./platforms/js/build_js.py build_js --build_wasm --simd