This is a library used to communicate with fulcrum (Arb read, write, execute, and symbolilifcation) in the kernel.
This library will take you straight to yodie land baby
To go straight to yodie land, you gotta hit a blinker. To hit a blinker you hit the pen (Compile the kernel patch in https://github.com/Qualcomm-HypX-Reversing/samsung-patcher) and wait until it blinks (Apply the kernel patch)
From here, you're basically in yodie land. Download the android NDK and run ndk-build in the root directory and you should have libfulcrum.a in obj/. This will allow you to communciate with fulcrum.