装配psycopg是出错：Error: pg_config executable not found

装psycopg是出错

 执行 python setup.py install

running build
running build_py
running build_ext
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'.

需要安装postgresql-devel插件

 yum install postgresql-devel*