Can't install pg gem on Mountain Lion

Question

I have been having a lot of troubles with Rails after upgrading to Mountain Lion.

Trying to trouble shoot these and searching for hours on the internet so far I have

Answer 1

Download the postgresSQL installer from http://www.enterprisedb.com/products-services-training/pgdownload#osx

and then make your path look something like this:

PATH=$PATH:/Library/PostgreSQL/9.0/bin/ gem install pg

This would do!

Note: Please specify your postgreSQL installed version correctly in the path.

UPDATE(10/11/2015) (Taken from Heroku)

On OS X with Homebrew:

1. Install postgresql using:

   brew install postgresql

2. Then install the gem using:

   gem install pg -- --with-pg-config=/usr/local/bin/pg_config

On OS X with MacPorts:

gem install pg -- --with-pg-config=/opt/local/lib/postgresql84/bin/pg_config

Hope this helps!