Programming stuff for Mac OS X...
Hacking...
Hard rock (also really big Metallica + Wasp + ... fan)...
Star Trek (Have you seen Star Trek Into Darkness, Star Trek Renegades and Star Trek Discovery?)...
Playing synthesizer...
I have built the 10.13.6 kernel.
EDIT: New version with missing symbols added.
System.kext needs to be installed and then the prelink will work.
XCPM is enabled.
XNU-10.13.6-AnV_R2.zip
Yes those symbols aren't defined in 13.X and below.
The patch got the instructions from the KDK.
I used the release kernel and reverse engineered those instructions.
Without those the prelink will fail.
I have built the very first kernel.
It is fully supported.
Patch is included.
EDIT: I have used the latest patch and have recreated the kernel.
Also included is the BootKernelExtensions.kc file.
EDIT2: New version based on Shanee's patch.
XNU-14.0.0-AnV_R3.zip