ERROR: Failed to build gem native extension on Mavericks

ruby-on-rails ruby ruby-on-rails-4 pg osx-mavericks

Also make sure that you've upgraded Xcode to re-install command line tools on Mavericks. In terminal type:

xcode-select --install

Then follow the prompts.

ruby-on-rails ruby ruby-on-rails-4 pg osx-mavericks

For me it worked when I did:

brew install postgresql

ruby-on-rails ruby ruby-on-rails-4 pg osx-mavericks

this worked for me with Mavericks and the Postgresapp:

gem install pg -v '0.17.0' -- --with-pg-config=/Applications/Postgres93.app/Contents/MacOS/bin/pg_config

CodeHunter