redhat 6.0 6.1

I tried to build postgresql from the source rpm.  It failed.  I have
redhat 6.0 with some 6.1 upgrades.  I used the latest stable version for
locale.  Here is what happened:
make[2]: Leaving directory
`/usr/src/redhat/BUILD/postgresql-6.5.2/src/pl/tcl'
make[1]: Leaving directory
`/usr/src/redhat/BUILD/postgresql-6.5.2/src/pl'
All of PostgreSQL is successfully made. Ready to install.
+ pushd interfaces/python
/usr/src/redhat/BUILD/postgresql-6.5.2/src/interfaces/python
/usr/src/redhat/BUILD/postgresql-6.5.2/src
/usr/src/redhat/BUILD/postgresql-6.5.2
+ cp /usr/lib/python1.5/config/Makefile.pre.in .
cp: /usr/lib/python1.5/config/Makefile.pre.in: No such file or directory

Bad exit status from /var/tmp/rpm-tmp.13834 (%build)