compiling problem

hi,

i'm using a Mandriva Linux LE2005 (10.2) on an intel computer.

i'm trying to compile Postgresql. Everything is going fine except when
it does the regress step. At this point it failed with an initdb error.
In the initdb.log file in the BUILD/postgresql/src/test/regress/log i
have the following:

Running in noclean mode.  Mistakes will not be cleaned up.
initdb: cannot be run as root
Please log in (using, e.g., "su") as the (unprivileged) user that will
own the server process.

i am compiling trought RPM system

as:

rpm -ba /usr/src/RPM/SPECS/postgresql.specs


Please can someone help me?

Laurent