1. Compile an i686-elf GCC and binutils following the instructions on this page:
   https://wiki.osdev.org/GCC_Cross-Compiler
   Or use some tool to automate it, like I use crossdev on my Gentoo machine.

2. Install yasm, or modify the makefile to use nasm if you prefer it

3. Run make in the source root

4. Run the OS:
   make run
   This will create a disk image (if needed) and run it. Assumes that sfdisk, mtools and dosfstools are installed.