错误:无法为使用PEP 517且无法直接安装的opencv-python构建轮子 [英] ERROR: Could not build wheels for opencv-python which use PEP 517 and cannot be installed directly

问题描述

我试图在Jetson Nano的docker中安装OpenCV4.它具有jetpack 4.4 s操作系统.Docker已成功创建，并且Tensorflow正在运行，但是在使用pip安装OpenCV时，它显示CMake错误.

I was trying to install OpenCV4 in a docker on jetson nano. It has jetpack 4.4 s os. The docker was successfully created and Tensorflow is running but while installing OpenCV using pip it is showing CMake error.

root@5abf405fb92d:~# pip3 install opencv-python
Collecting opencv-python
  Downloading opencv-python-4.4.0.42.tar.gz (88.9 MB)
     |████████████████████████████████| 88.9 MB 2.5 kB/s 
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... done
Requirement already satisfied: numpy>=1.13.3 in /usr/local/lib/python3.6/dist-packages (from opencv-python) (1.18.4)
Building wheels for collected packages: opencv-python
  Building wheel for opencv-python (PEP 517) ... error
  ERROR: Command errored out with exit status 1:
   command: /usr/bin/python3 /usr/local/lib/python3.6/dist-packages/pip/_vendor/pep517/_in_process.py build_wheel /tmp/tmpqpzwrofy
       cwd: /tmp/pip-install-93nxibky/opencv-python
  Complete output (9 lines):
    File "/tmp/pip-build-env-o_hualnr/overlay/lib/python3.6/site-packages/skbuild/setuptools_wrap.py", line 560, in setup
      cmkr = cmaker.CMaker(cmake_executable)
    File "/tmp/pip-build-env-o_hualnr/overlay/lib/python3.6/site-packages/skbuild/cmaker.py", line 95, in __init__
      self.cmake_version = get_cmake_version(self.cmake_executable)
    File "/tmp/pip-build-env-o_hualnr/overlay/lib/python3.6/site-packages/skbuild/cmaker.py", line 82, in get_cmake_version
      "Problem with the CMake installation, aborting build. CMake executable is %s" % cmake_executable)
  Traceback (most recent call last):
  
  Problem with the CMake installation, aborting build. CMake executable is cmake
  ----------------------------------------
  ERROR: Failed building wheel for opencv-python
Failed to build opencv-python
ERROR: Could not build wheels for opencv-python which use PEP 517 and cannot be installed directly

推荐答案

是..终于找到了解决方法.遵循此 https://github.com/mdegans/nano_build_opencv 并从源代码构建并最终安装.

Yes .. Finally found a work around. Follow this https://github.com/mdegans/nano_build_opencv and build from source and finally gets installed.

PS:建造可能要花一些时间，对我来说，这需要10小时:P.

PS: It may take a bit long for building, for me it took 10 Hrs :P.

快乐的图像处理..

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