Could not find your PostgreSQL installation in /var/lib/pgsql

system=fedora15 
software env=all  software in DVD are completely installed(include pgsql psql) and some thing like pppoe 
postgresql are install with fedora by default option, 
/etc/passwd/:            postgres  PostgreSQL Server:/var/lib/pgsql:/bin/bash

operations:
su - postgres
initdb  -D /var/lib/pgsql/data -E UTF-8 
pg_ctl -D /var/lib/pgsql/data -l logfile start
pg_ctl status      {terminal  return       pg_ctl: (PID: 3052)/usr/bin/postgres "-D" "/var/lib/pgsql/data"}
createdb DatabaseName
psql DatabaseName         
su - root
cd /home/download/pgadmin3-1.14.0
./configure --with-pgsql=/var/lib/pgsql

{ Could not find your PostgreSQL installation in /var/lib/pgsql }