how can I include gpio.h from git source running gcc with c file?

i’m now struggling with gpio for running servo motor.

when I just use file pointer for toggling gpio, I got too much jitter.

I couldn’t synchronize the pulse time between pwm from beagleboard and servo.

So, i’m changing the method that using gpio.h

I found some useful git source here.

so I downloaded and i succeed to configure and make it.

But I don’t know how to use.

If I wanna gpio.h headerfile, how can I include it in my c file and I don’t know gcc command for doing this.

I may use function in this header file. So, let me know about that. Thanks!