Q:

What files and folders to clean after opencv-4.1.2 build?

After building opencv-4.1.2 on windows 7 64 bit. using visual studio 2019 and cmake and python. i have the build folder contains many folders and files.
So what can i delete (files and folders) that are un-necessary to my projects?
The tutorial i've followed to build it says selct 'BUILD_ALL' then 'INSTALL'. when i build install i get a folder named "install".

I want to know what does INSTALL build do?
The folder I used to build open_cv contains configue files generated by cmake. 

A:

After building finished, then in the build folder, you can find a folder calls install, so you only keep the install folder and delete all other files and folders.
The INSTALL means, all the libs and DLL files will be stored in in a folder that calls the install folder inside the build folder. All you need are in the install folder (libs, dlls, data, ...)

