when i execution ./run.sh -P 720x1280@720x1280/0 as the README.md in the example folder

it report back：
In file included from jni/minicap/JpgEncoder.cpp:3:0:
jni/minicap/JpgEncoder.hpp:4:23: fatal error: turbojpeg.h: No such file or directory
#include <turbojpeg.h>

I realized that i need the libjpeg-turbo

but how did i use it ? just down and make it or the other way?

I saw the prompt that “We include libjpeg-turbo as a Git submodule, so first make sure you've fetched it.”

but i did not understand.
I am a novice. please help me
thank you