Kfs-3 is the third kernel project.
I decided to use clang instead of gcc, because clang is cross-compiler by default.
Using arch, i also needed to install:
sudo pacman -S grub-rescue xorriso mtools qemu
You can check if you have the required tools using the scripts in scripts/checkTools.sh
Once compiled, you can test your iso using qemu:
qemu-system-x86_64 -cdrom myos.iso
This kernel has a very very basic shell working, type help to see the available commands.
You can also change screens by pressing: F1, F2, F3. You can also use left / right arrows to move cursor, and up / down arrows to go to previous / next command.