title: install pg_config in CentOS 5.5 without yum
body: <p>python version 2.4</p>
  
  <h1># pip install psycopg2</h1>
  
  <p>Getting the following error:</p>
  
  <p>Downloading/unpacking psycopg2
     Running setup.py egg_info for package psycopg2</p>
  
  <pre><code>Error: pg_config executable not found.
  
  Please add the directory containing pg_config to the PATH
  or specify the full executable path with the option:
  
      python setup.py build_ext --pg-config /path/to/pg_config build ...
  
  or with the pg_config option in 'setup.cfg'.
  Complete output from command python setup.py egg_info:
  running egg_info
  
   writing pip-egg-info/psycopg2.egg-info/PKG-INFO
   writing top-level names to pip-egg-info/psycopg2.egg-info/top_level.txt
   writing dependency_links to pip-egg-info/psycopg2.egg-info/dependency_links.txt
   warning: manifest_maker: standard file '-c' not found
  
  Error: pg_config executable not found.
  Please add the directory containing pg_config to the PATH
  or specify the full executable path with the option:
  python setup.py build_ext --pg-config /path/to/pg_config build ...
  or with the pg_config option in 'setup.cfg'.
  ----------------------------------------
  Command python setup.py egg_info failed with error code 1 in /root/sources/build/psycopg2
  Storing complete log in /root/.pip/pip.log
  [root@host sources]# which pg_config
  /usr/bin/which: no pg_config in     (/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/b    in:/root/bin)
  </code></pre>
  
  <p>I am unable to install pg_config as an executable </p>