Issues building from source on Ubuntu with Python 3.10.4

Expected behaviour

I need to build opencv-python from source on Ubuntu 22.04 with Python 3.10.4. However, I would like to override the default PYTHON3_NUMPY_INCLUDE_DIRS setting from something like /home/user/miniconda3/envs/py310/lib/python3.10/site-packages/numpy/core/include to /home/user/miniconda3/envs/py310/lib/python3.10/site-packages/numpy/core/include/numpy. Is there any way to achieve this, because otherwise the build fails as I encounter the following error fatal error: numpy/ndarrayobject.h: No such file or directory.

Actual behaviour

Already described above.

Steps to reproduce

• example code
  1. Change directory to opencv-python.
  2. Enable virtual Python environment and make sure numpy and scikit-build are installed.
  3. Set environment variables using the following:

export CMAKE_ARGS="-DWITH_CUDA=ON \
-DWITH_CUDNN=ON \
-DOPENCV_DNN_CUDA=ON \
-DWITH_CUBLAS=ON \
-DPYTHON3_EXECUTABLE=/home/user/miniconda3/envs/py310/bin/python \
-DPYTHON3_LIBRARY=/home/user/miniconda3/envs/py310/lib/libpython3.10.so \
-DPYTHON3_PACKAGES_PATH=/home/user/miniconda3/envs/py310/lib/python3.10/site-packages \
-DPYTHON_INCLUDE_DIR=/home/user/miniconda3/envs/py310/include/python3.10 \
-DPYTHON3_NUMPY_INCLUDE_DIRS=/home/user/miniconda3/envs/py310/lib/python3.10/site-packages/numpy/core/include/numpy \
-DCMAKE_VERBOSE_MAKEFILE=ON"

export ENABLE_CONTRIB=1

export VERBOSE=1

4. Run:

pip wheel . --verbose

• operating system
  • Ubuntu 22.04
• architecture (e.g. x86)
  • x86_64
• opencv-python version
  • 4.6.0.66

Issue submission checklist

• This is not a generic OpenCV usage question (looking for help for coding, other usage questions, homework etc.)
• I have read the README of this repository and understand that this repository provides only an automated build toolchain for OpenCV Python packages (there is no actual OpenCV code here)
• The issue is related to the build scripts in this repository, to the pre-built binaries or is a feature request (such as "please enable this additional dependency")
• I'm using the latest version of opencv-python

Start by reproducing the reported pip wheel . --verbose build on Ubuntu 22.04 with Python 3.10.4 and the supplied CMAKE_ARGS, then inspect how the build configuration consumes PYTHON3_NUMPY_INCLUDE_DIRS. Done means the requested NumPy include-directory override is accepted and the opencv-python wheel builds successfully.