root@km23255-03:/opt/synergy# gem install postgres
Building native extensions.  This could take a while...
ERROR:  Error installing postgres:
	ERROR: Failed to build gem native extension.

        /usr/local/rvm/rubies/ruby-1.9.2-p290/bin/ruby extconf.rb
extconf.rb:4:in `<main>': uninitialized constant Object::PLATFORM (NameError)


Gem files will remain installed in /root/.rvm/gems/ruby-1.9.2-p290/gems/postgres-0.7.9.2008.01.28 for inspection.
Results logged to /root/.rvm/gems/ruby-1.9.2-p290/gems/postgres-0.7.9.2008.01.28/ext/gem_make.out