Postgres adapter error after gems:unpack

Question

I have installed following gems:

actionmailer (2.3.8)
actionpack (2.3.8)
activerecord (2.3.8)
activeresource (2.3.8)
activesupport (2.3.8)
open4 (1.0.1)
pg (0.9.0)
rack (1.1.0)
rails (2.3.8)
rake (0.8.7)

My application uses postgres as db and pg gem and it had been working fine by the time I done

rake rails:freeze:gems
rake gems:unpack

It copied rails and pg gem to /vendor but after that I have following error when I try to run server:

Please install the postgresql adapter: `gem install activerecord-postgresql-adapter` (no such file to load -- pg_ext) (RuntimeError)

Answer 1

Ok, the solution is:

rake gems:build

The whole thing is described here: http://reborg.tumblr.com/post/99668398/rails-gems-unpack-native