building from source requires postgres user account

I'd like to use my own user account when building postgres from source.
When I follow directions on Sun's page:
http://docs.sun.com/app/docs/doc/819-5578/6n7lcpcl5?a=view I don't have a
problem, but running build under my own account runs into file permission
issues after the build is done.

This is an important issue for me, as the postgres build is an integral part
of a larger build process involving suite of products. Is there a way to
configure the account to be used during build?

My build.log shows:

LOG ############################# END ################################

LOG

LOG

LOG ############################# START ################################

LOG

LOG Setting permissions

LOG

LOG ----------------------------------------------------------------------

ERR cannot set file permissions

Thanks in advance,

~george