pg gem '0.14.0' on Mountain Lion fails

Question

I just upgraded from OS X Lion to OS X Mountain Lion. My rails environment for the most part stayed in tact.

The only steps I had to do to get things back to a good

Answer 1

Mac comes with an outdated prebuilt PostgreSQL client installation and pg_config file that comes with it conflicts with any new PostgreSQL server & client installations.

Installing ruby gem with a fully qualified file name of pg_config overrides default known location of pg_config and installation succeeds.

Current location of pg_config by one click installer by EnterpriseDB: /Library/PostgreSQL/bin/pg_config

This command finally worked for me.

CrashMX2$ gem install pg -- --with-pg-config=/Library/PostgreSQL/bin/pg_config