Comprehensible instructions to build contrib with CUDA

sneeder · August 10, 2023, 4:50pm

Linux. An issue was opened here.

Failed compilation for Python with CUDA

opened 04:51AM - 10 Aug 23 UTC

incomplete

### System Information OpenCV version: 4.7.0 Operating System / Platform: Li…nux Mint 20.3 Compiler & compiler version: GCC 9.4.0 CUDA version: 12.0 ### Detailed description Due to being forced to manually compile opencv for python to use CUDA and having absolutely no knowledge of Cmake/C++ compilation/libraries/linking/what have you, i am trying to install this using this script i found online, as it's the only way i can. ```#!/bin/bash sudo apt-get update && sudo apt-get upgrade sudo apt-get install -y build-essential cmake git unzip pkg-config make libjpeg-dev libpng-dev libtiff-dev libgtk2.0-dev libavcodec-dev libavformat-dev libswscale-dev sudo apt-get install -y python3.8-dev python3-numpy libtbb2 libtbb-dev sudo apt-get install -y libdc1394-22-dev libeigen3-dev libtheora-dev libvorbis-dev libxvidcore-dev libx264-dev sphinx-common libtbb-dev yasm libfaac-dev libopencore-amrnb-dev libopencore-amrwb-dev libopenexr-dev libgstreamer-plugins-base1.0-dev libavutil-dev libavfilter-dev libavresample-dev mkdir ~/opencv_build && cd ~/opencv_build git clone https://github.com/opencv/opencv git clone https://github.com/opencv/opencv_contrib cd ~/opencv_build/opencv mkdir -p build && cd build cmake -D WITH_CUDA=ON -D CUDA_VERSION=12.0 -D WITH_CUBLAS=ON -D WITH_CUDNN=ON -D OPENCV_DNN_CUDA=ON -D BUILD_TIFF=ON -D BUILD_opencv_java=OFF -D WITH_OPENGL=ON -D WITH_OPENCL=ON -D WITH_IPP=ON -D WITH_TBB=ON -D WITH_EIGEN=ON -D WITH_V4L=ON -D WITH_VTK=OFF -D BUILD_TESTS=OFF -D BUILD_PERF_TESTS=OFF -D CMAKE_BUILD_TYPE=RELEASE -D BUILD_opencv_python2=OFF -D CMAKE_INSTALL_PREFIX=/usr/local -D PYTHON3_INCLUDE_DIR=$(python3 -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") -D PYTHON3_PACKAGES_PATH=$(python3 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D OPENCV_ENABLE_NONFREE=ON -D OPENCV_GENERATE_PKGCONFIG=ON -D PYTHON3_EXECUTABLE=$(which python3) -D PYTHON_DEFAULT_EXECUTABLE=$(which python3) -D OPENCV_EXTRA_MODULES_PATH=~/opencv_build/opencv_contrib/modules -D BUILD_EXAMPLES=ON .. make -j8 sudo make install sudo ldconfig pkg-config --modversion opencv4 ``` After compiling, importing cv2 in python yields this error: ```Traceback (most recent call last): File "yolo.py", line 1, in <module> import cv2 File "/home/anon/.local/lib/python3.8/site-packages/cv2/__init__.py", line 181, in <module> bootstrap() File "/home/anon/.local/lib/python3.8/site-packages/cv2/__init__.py", line 153, in bootstrap native_module = importlib.import_module("cv2") File "/usr/lib/python3.8/importlib/__init__.py", line 127, in import_module return _bootstrap._gcd_import(name[level:], package, level) ImportError: libnppc.so.11: cannot open shared object file: No such file or directory ``` ### Steps to reproduce Use the included script ### Issue submission checklist - [X] I report the issue, it's not a question - [X] I checked the problem with documentation, FAQ, open issues, forum.opencv.org, Stack Overflow, etc and have not found any solution - [X] I updated to the latest OpenCV version and the issue is still there - [X] There is reproducer code and related data files (videos, images, onnx, etc)

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Comprehensible instructions to build contrib with CUDA

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