pg_config executable not found error

I want to install psycopg2, but I keep getting errors If you do pip install psycopg2 in the command window,

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 /tmp/pip-build/psycopg2

But there's already a pg_config in PATH I've confirmed that it's running well.

$ which pg_config
/usr/pgsql-9.1/bin/pg_config

If you put the path of pg_config in the setup.cfg file and build it as a source file downloaded from the pg_config website (http://initd.org/psycopg/), you can also

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

Why do you keep saying you can't find it? ㅜ<

How can you do this even though you did it with sudo in RHEL 5.5 environment?

python pip psycopg2

2022-09-22 13:02