This question is really hard for me to describe, so any improvements on it would be nice.
I am currently on Ubuntu 10.4, I have installed RVM (probably as root, that could be my mistake)
I did what this guide told me to do: http://rubyonrails.dreamwidth.org/1713.html and from my point of view it worked.
I was able to create a project on Rails 3 painlessly, yay
But when starting the server or console i got:
Could not find gem 'sqlite3-ruby (>= 0, runtime)' in any of the gem sources.
I tryed: sudo gem install sqlite3-ruby
All failed with the output:
/usr/bin/ruby1.8 extconf.rb
extconf.rb:3:in `require': no such file to load -- mkmf (LoadError)
Even after lots of dev packages installed over Ubuntu, still failed. So i ran: sudo gem1.9 install sqlite3-ruby
and succeeded!
Now, I try running my server but still get the same error! My guess is that i must set gem = gem1.9, but I have no idea how =(
UPDATE:
fps ~ $ ls /var/lib/gems
# 1.8 1.9 1.9.0
fps ~ $ ls /var/lib/gems/1.8/gems
# actionmailer-2.3.5 activeresource-2.3.5 builder-2.1.2 rake-0.8.7
# actionpack-2.3.5 activesupport-2.3.5 rack-1.0.1 rubygems-update-1.3.7
# activerecord-2.3.5 activesupport-3.0.0 rails-2.3.5
fps ~ $ ls /var/lib/gems/1.9/gems
# ls: cannot access /var/lib/gems/1.9/gems: No such file or directory
fps ~ $ ls /var/lib/gems/1.9.0/gems
# sqlite3-ruby-1.3.1
UPDATE2
Have followed @"The MYYN" and @"ennuikiller" steps, here are the results:
fps ~ $ sudo rvm gem install sqlite3-ruby
[sudo] password for fps:
info: ruby-1.8.7-p302: ruby 1.8.7 (2010-08-16 patchlevel 302) [i686-linux]
#...
1 gem installed
#...
info: ruby-1.9.2-head: ruby 1.9.2p0 (2010-09-15 revision 29252) [i686-linux]
Building native extensions. This could take a while...
Successfully installed sqlite3-ruby-1.3.1
and watched railscasts/201 Bundler
fps ~/Aptana Studio 3 Workspace/dum $ bundle install
Fetching source index for http://rubygems.org/
#...
Using railties (3.0.0)
Using rails (3.0.0)
Installing sqlite3-ruby (1.3.1) with native extensions /usr/local/lib/site_ruby/1.8/rubygems/installer.rb:483:in `build_extensio
ns': ERROR: Failed to build gem native extension. (Gem::Installer::ExtensionBuildError)
/usr/bin/ruby1.8 extconf.rb
extconf.rb:3:in `require': no such file to load -- mkmf (LoadError)
from extconf.rb:3
Got the same error again.. If there is a way to make rails 3 work sudo remove this rvm, and bring my ruby back to 1.8.7, i am considering.