Build OpenBSD Kernel
========================================================================

I'm running  OpenBSD-current for a while  in order to support  my port.
It's currently only one port, but that's a start, right?

Anyway... every once in a while I stumble over a patch on the OpenBSD
Mailinglist I want to try and this requires me to apply the patch and
build the Kernel with it. But how?

Well, the documentation is where you would expect it:
https://www.openbsd.org/faq/faq5.html#Custom

Download the kernel source

  # cd /usr
  # cvs -qd anoncvs@anoncvs.ca.openbsd.org:/cvs checkout -P src

Update the kernel source

  # cd /usr/src
  # cvs -q up -Pd

Configure Kernel

  # cd /usr/src/sys/arch/amd64/conf
  # cp GENERIC.MP MYKERNEL
  # config MYKERNEL

Build and install kernel (amd64)

  # cd /sys/arch/amd64/compile/MYKERNEL
  # make clean
  # make
  # make install # the old kernel is /obsd now

That's it. Reboot.

This is ONLY the Kernel. If you need to build the whole system, please
consult the OpenBSD documentation.

# Changelog:
# * 2019-10-24: Created