I have read the doc in /usr/share/mk but I am still a little bit confused.

I want to:

set mtune and mcpu to hypersparc
i want to sent cflags to -O3
i want make use 5 jobs (-j5)

If I put a file called mk.conf in /etc with:

MAKEFLAGS=-j5
CFLAG=-O3
CPUFLAGS=-mcpu=hypersparc -mtune=hypersparc

will this do want I want?

Also the new build.sh setup has me a bit confused. How the heck to I
get it to install the system when it is done? I miss the old build
world setup.

Thanks!