Face recognition PIP failed to install Dlib Library

1. First, set the domestic image ：

douban ：

pip install pip -U
pip config set global.index-url https://pypi.douban.com/simple/

tsinghua

pip install pip -U
pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple

First install the following Libraries , Re execution pip install dlib

pip install boost
pip install cmake
pip install dlib

Installation successful ！！！

Note appended ： You can also go to the official website to download whl file , then pip install install

dlib · PyPI

If you need to ubutun Installation on system , You need to add one more ：

sudo apt install build-essential

Installation successful