help installing psql 7.1.3 - rh6.2 - libreadline.so.4

Hi,
I need Help installing.

I'm trying to install PostgreSQL 7.1.3 on RedHat 6.2
The PostgreSQLRH 6.2 RPMs asks for libreadline.so.4
I can't find a libreadline.so.4 RPM for HR6.2, only libreadline.so.2x

So next I try postgresql-7.1.3.tar.gz

./configure
make
make install
etc.

and it works except when trying to run from the cmd line I get:
/usr/bin/psql: error in loading shared libraries: libreadline.so.4:
cannot open shared object file: No such file or directory
createuser: creation of user "jtest" failed

So, either
1) please just tell me where the libreadline.so.4 RPM is for RH6.2
2) where is libreadline.so.4 for RH6.2 source code is.
or
3) how can I tell ./configure NOT to be fooled by a bogus libreadline.so.4
and force it to use something else.

I got this to work on RH7.1, but this server must say at RH6.2

TIA from a newbie
- Jim