参考链接：https://blog.csdn.net/yuanlulu/article/details/79017116
从x86_64 + ubuntu18.04 + python3.5中import cv2(opencv4.1), 遇到以下错误：
ImportError: libSM.so.6: cannot open shared object file: No such file
or
directory
ImportError: libXrender.so.
1: cannot open shared object file: No such file
or
directory
ImportError: libXext.so.
6: cannot open shared object file: No such file
or
directory
ImportError: libgthread-2.0.so.0: cannot open shared object file: No such file or directory
解决方案：
apt-
get update
apt
-
get install libsm6
apt
-
get install libxrender1
apt-get install libglib2.0-dev
apt
-get install libxext-dev
