Rails Server Error

Question

When i start my Rail Server for Project it gives an error like

sahil@sahil-M:~/sites/tasks$ rails s
Could not find gem 'sqlite3 (>= 0, runtime)' in any of the gem sources listed in your Gemfile.
Run `bundle install` to install missing gems.

and while i go for bundle install it giver another error

sahil@sahil-M:~/sites/tasks$ sudo bundle install
Fetching source index for http://rubygems.org/
Using rake (0.9.2)
Using abstract (1.0.0)
Using activesupport (3.0.8)
Using builder (2.1.2)
Using i18n (0.5.0)
Using activemodel (3.0.8)
Using erubis (2.6.6)
Using rack (1.2.3)
Using rack-mount (0.6.14)
Using rack-test (0.5.7)
Installing tzinfo (0.3.28)
Using actionpack (3.0.8)
Using mime-types (1.16)
Using polyglot (0.3.1)
Using treetop (1.4.9)
Using mail (2.2.19)
Using actionmailer (3.0.8)
Using arel (2.0.10)
Using activerecord (3.0.8)
Using activeresource (3.0.8)
Using bundler (1.0.15)
Using thor (0.14.6)
Using railties (3.0.8)
Using rails (3.0.8)
Installing sqlite3 (1.3.3) with native extensions /usr/local/lib/site_ruby/1.8/rubygems/installer.rb:483:in `build_extensions': 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


Gem files will remain installed in /usr/lib/ruby/gems/1.8/gems/sqlite3-1.3.3 for inspection.
Results logged to /usr/lib/ruby/gems/1.8/gems/sqlite3-1.3.3/ext/sqlite3/gem_make.out
from /usr/local/lib/site_ruby/1.8/rubygems/installer.rb:446:in `each'
from /usr/local/lib/site_ruby/1.8/rubygems/installer.rb:446:in `build_extensions'
from /usr/local/lib/site_ruby/1.8/rubygems/installer.rb:198:in `install'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/source.rb:101:in `install'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/rubygems_integration.rb:78:in `preserve_paths'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/source.rb:91:in `install'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/installer.rb:58:in `run'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/rubygems_integration.rb:93:in `with_build_args'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/installer.rb:57:in `run'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/spec_set.rb:12:in `each'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/spec_set.rb:12:in `each'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/installer.rb:49:in `run'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/installer.rb:8:in `install'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/cli.rb:222:in `install'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/vendor/thor/task.rb:22:in `send'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/vendor/thor/task.rb:22:in `run'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/vendor/thor/invocation.rb:118:in `invoke_task'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/vendor/thor.rb:246:in `dispatch'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/vendor/thor/base.rb:389:in `start'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/bin/bundle:13
from /usr/bin/bundle:19:in `load'
from /usr/bin/bundle:19

Answer 1

Try this

  sudo apt-get install ruby1.8-dev libsqlite3-ruby libsqlite3-dev

Answer 2

You need to install the ruby1.8-dev package as needed on your distro.

On Ubuntu/Debian, login as root on the console and install it like that:

apt-get install ruby1.8-dev

Or it might be just ruby-dev. Try it if ruby1.8-dev doesn't work.