I'm following this guide: http://www.tonymacx86.com/el-capitan-desktop-guides/175815-guide-gigabyte-brix-using-clover-uefi-gb-bxi5h-4200-gb-bxi5-4570r-gb-bxi7-4770r.html It links to this guide for the USB Bootloader instructions: http://www.tonymacx86.com/el-capitan-laptop-support/148093-guide-booting-os-x-installer-laptops-clover.html
There are links in both guides to projects with C files and XCode projects which can somehow be used to make kext files, but they don't specify what that process looks like, for instance: https://github.com/RehabMan/OS-X-Generic-USB3
I am not sure how to use this project to generate a kext file, and don't want to accidentally bork system drivers on the Mac that I am creating the bootloader on. How do I create a kext file from a project like the one above?
Have you thought about using the kexts that are already generated instead of trying to build your own? Much easier.