7.1 SRPM woes (Mandrake 7.2)

I'm sure my problem relates more to my ignorance than the srpm set but here
goes:

I am trying to build on a Mandrake 7.2 system (rpm v3.0.5)

The source install (rpm -i postgresql-7.1-1.src.rpm) seemed to do everything
it was supposed to. I followed the directions in the README.rpm-dist file
as far as they went. I assume that the "rpm building area" is /usr/src/RPM
on Mandrake and CDed there.

According to "Maximum RPM" page 132, I should only have to type:

rpm -ba postgresql-7.1-1.spec and all will be right with the world.
Instead, I get several pages of messages (I can't seem to |more them or > to
a file) the last one being about a failed dependancy for Python. When I
installed the Mandrake, I told it to install EVERYTHING so I don't think I
should be missing any compilers/libraries/headers etc.

Am I missing something? I am assuming that since Mandrake RPMs were done
before, they are not the same as the RedHat RPMs and I will have to rebuild
from source. I tried the build from the RPM directory (as stated above) and
from the SPECS directory as stated in the "Maximum RPM" book both with the
same result.

Advice? I'll be more than glad to upload my finished RPMs when I'm done.

Len Morgan