CMake command to compile OpenCV(>=4.0) with conda python interface

opencv_cmake.sh

# Following is an example compiling OpenCV with conda python in MacOS.
# To compile opencv with python2, change options related to python3 accordingly.
# Option PYTHON3_LIBRARY is the location to libpythonx.x.dylib or libpythonx.x.so.
# Option PYTHON3_INCLUDE_DIR is the location to a directory with `Python.h` etc. Run `python -c 'import distutils.sysconfig as s; print(s.get_python_inc())'` to get the path.
# Option PYTHON3_EXECUTABLE is the location to pythonx.x executable. Run `which python` to get the directory.
cmake -D CMAKE_BUILD_TYPE=RELEASE \
    -D CMAKE_INSTALL_PREFIX=/Users/fengyuentau/Documents/opencv \
    -D PYTHON3_LIBRARY=/usr/local/Caskroom/miniconda/base/lib \
    -D PYTHON3_INCLUDE_DIR=/usr/local/Caskroom/miniconda/base/include/python3.8 \
    -D PYTHON3_EXECUTABLE=/usr/local/Caskroom/miniconda/base/bin/python \
    -D BUILD_opencv_python2=OFF \
    -D BUILD_opencv_python3=ON \
    -D INSTALL_PYTHON_EXAMPLES=OFF \
    -D INSTALL_C_EXAMPLES=OFF \
    -D OPENCV_ENABLE_NONFREE=OFF \
    -D BUILD_EXAMPLES=OFF \
    -D OPENCV_GENERATE_PKGCONFIG=YES .. # https://github.com/opencv/opencv/issues/13154#issuecomment-456652297