a build server for my network

[Jonathan Horne]

i was reading this today, and working on creating a build server:

http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/small-lan.html

the section for ports mentions that the make.conf files need to have DISTDIR 
and some other things specified in order for it all to work properly.  i 
looked at the example make.conf, but i dont see examples for the settings 
that are listed in the handbook.  

can someone point me in the right direction here, so i can sucessfully share 
my ports folder with others via nfs?

thanks
jonathan