Building kernel outside of /usr/src (with an unprivileged user)

[Matthias Petermann]

Hello,

while trying to build a patched CURRENT src on a STABLE FreeBSD 9 I was 
wondering if it would be possible to have the source directory (src) in 
a different place from /usr (e.g. in /home/myuser/src) where it can be 
built with an unprivileged user and without interference with the STABLE 
sources in /usr/src.

Does anyone have an idea how to achieve this?

Kind regards,
Matthias