Python – pg_config executable not found


I am having trouble installing psycopg2. I get the following error when I try to pip install psycopg2:

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 build_ext --pg-config /path/to/pg_config build ...

or with the pg_config option in 'setup.cfg'.

Command python egg_info failed with error code 1 in /tmp/pip-build/psycopg2

But the problem is pg_config is actually in my PATH; it runs without any problem:

$ which pg_config

I tried adding the pg_config path to the setup.cfg file and building it using the source files I downloaded from their website ( and I get the following error message!

Error: Unable to find 'pg_config' file in '/usr/pgsql-9.1/bin/'

But it is actually THERE!!!

I am baffled by these errors. Can anyone help please?

By the way, I sudo all the commands. Also I am on RHEL 5.5.

Best Solution

pg_config is in postgresql-devel (libpq-dev in Debian/Ubuntu, libpq-devel on Centos/Fedora/Cygwin/Babun.)

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