pip install dlib报错

临时跑一个别人的文件，涉及人脸识别，在dlib库的安装上就出现了bug。bug极其冗长，我反正有点晕。

 note: This error originates from a subprocess, and is likely not a problem with pip.
error: legacy-install-failure

× Encountered error while trying to install package.
╰─> dlib

note: This is an issue with the package mentioned above, not pip.
hint: See above for output from the failure.

 试了很多方法，包括换源。

最后发现是没有前题库。。。。比如上图这个CMake

先安装以下的库，再执行pip install dlib

pip install boost
pip install cmake
pip install dlib

成功