[cross]compiling world and mk.conf

[Ede Wolf <listac%nebelschwaden.de@localhost>]

Hello,

I am heading for my first cross compile, but reading chapter 33 or man 
make/release, I am having one principal problem of understanding:

Of course, if I have a central machine to cross compile for different 
hosts, I am having a different mk.conf for each remote host or host 
group/architecture. From CFLAGS to different build options, like .f.e. 
MKINFO

But I have not been able to find a means to tell make build or build.sh 
the location of mk.conf they shall use for that particular build.

What am I missing?

Thanks

Ede