ruby apps/pro/ui/script/createuser

WARNING: Nokogiri was built against LibXML version 2.7.8, but has dynamically loaded 2.7.6
/usr/local/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:247:in `to_specs': Please install the postgresql adapter: `gem install activerecord-postgresql-adapter` (Could not find pg (~> 0.11) amongst [actionmailer-3.2.8, actionpack-3.2.8, activemodel-3.2.8, activerecord-3.2.8, activeresource-3.2.8, activesupport-3.2.8, arel-3.0.2, bigdecimal-1.1.0, builder-3.0.2, bundler-1.2.0, erubis-2.7.0, hike-1.2.1, i18n-0.6.1, io-console-0.3, journey-1.0.4, json-1.5.4, mail-2.4.4, mime-types-1.19, minitest-2.5.1, multi_json-1.3.6, polyglot-0.3.3, postgres-pr-0.6.3, rack-1.4.1, rack-cache-1.2, rack-ssl-1.3.2, rack-test-0.6.1, rails-3.2.8, railties-3.2.8, rake-0.9.2.2, rdoc-3.9.4, sprockets-2.1.3, thor-0.16.0, tilt-1.3.3, treetop-1.4.10, tzinfo-0.3.33]) (LoadError)



gem install activerecord-postgresql-adapter
Building native extensions.  This could take a while...
ERROR:  Error installing activerecord-postgresql-adapter:
        ERROR: Failed to build gem native extension.

        /usr/local/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 libpq-fe.h... no
Can't find the 'libpq-fe.h header
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
        --with-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=/usr/local/bin/ruby
        --with-pg
        --without-pg
        --with-pg-dir
        --without-pg-dir
        --with-pg-include
        --without-pg-include=${pg-dir}/include
        --with-pg-lib
        --without-pg-lib=${pg-dir}/lib
        --with-pg-config
        --without-pg-config
        --with-pg_config
        --without-pg_config


Gem files will remain installed in /usr/local/lib/ruby/gems/1.9.1/gems/pg-0.14.1 for inspection.
Results logged to /usr/local/lib/ruby/gems/1.9.1/gems/pg-0.14.1/ext/gem_make.out