libpq-fe.hが見つからない - 屑プログラマの憂鬱Mac上のRailsでPostgresQLを使おうと思って、以下のエラー。 $ sudo gem install pg Building native extensions. This could take a while... ERROR: Error installing pg: ERROR: Failed to build gem native extension. /Users/rish/.rvm/rubies/ruby-1.9.2-p180/bin/ruby extconf.rb checking for pg_config... no No pg_config... trying anyway. If building fails, please try again with --with-pg-config=/path/to/pg_config checking for li
