bundle failing - Can't find the PostgreSQL client library (libpq) [duplicate]

Answer 1

For me, the trick was to re-link Postgres 9.3.0

brew link postgresql

Answer 2

Based on this post's answer and it worked for me (Yosemite OSX 10.10), you can try the following:

$ sudo su

$ env ARCHFLAGS="-arch x86_64" gem install pg

You don't have to reinstall pg from homebrew.

Answer 3

If you want to still be able to add gem 'pg' to your gemfile and use bundle install, and you know PostgreSQL and libpq-dev are installed (which I believe both should be since OS X ships with PostgreSQL) you need only tell your $PATH where to find pg_config. Try this:

$ ln -s /Library/PostgreSQL/9.1/bin/pg_config /usr/local/bin/pg_config

Make sure to replace 9.1 with whatever PostgreSQL version you have installed. And make sure wherever you're creating the link is in your $PATH. Once that's done, run bundle install to install the pg gem.