Git Bundle Install Error with Nokogiri: libxms2 is missing

Question

I'm following the Ruby on Rails Learn by Example by Michael Hatrl tutorial but I'm stuck halfway through chapter 3 due to an error. I'm told to type: 'rails generate controller Pages home contact'

where it responds with: 'Could not find gem 'webrat (= 0.7.1)' in any of the gem sources listed in your Gemfile. Try running 'bundle install'

Gemfile:

source 'http://rubygems.org'

gem 'rails', '3.0.1'

# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'

gem 'sqlite3-ruby', '1.3.2', :require => 'sqlite3'

group :development do
  gem 'rspec-rails', '2.5.0'
end

group :test do
  gem 'rspec', '2.5.0'
  gem 'webrat', '0.7.1'
end

# Use unicorn as the web server
# gem 'unicorn'

# Deploy with Capistrano
# gem 'capistrano'

# To use debugger
# gem 'ruby-debug'

# Bundle the extra gems:
# gem 'bj'
# gem 'nokogiri'
# gem 'sqlite3-ruby', :require => 'sqlite3'
# gem 'aws-s3', :require => 'aws/s3'

# Bundle gems for the local environment. Make sure to
# put test-only gems in this group so their generators
# and rake tasks are available in development mode:
# group :development, :test do
#   gem 'webrat'
# end

When I try 'bundle install' it lists all the file and when it gets to nokogiri an error comes up. The main error part being:

Installing nokogiri (1.4.4) with native extensions
/usr/lib/ruby/site_ruby/1.8/rubygems/installer.rb:533:in 'build extensions': ERROR: 
Failed to build gem native extension. (Gem::Installer::ExtensionBuildError)

            /usr/bin/ruby.exe extconf.rb
checking for libxml/parser.h... no
-----
libxml2 is missing. please visit http://nokogiri.org/tutorials/installing_nokogiri.html
for help with installing dpenedencies.
-----
*** 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 details. You may need configuration options.

Please help I need to finish the whole book quickly and this speedbump is slowing me down =(

Edit: I am using Git on Windows 7

Answer 1

I needed to do the same as ipsum suggested:

Debian or Ubuntu install the "libxml2-dev" package.

sudo apt-get install libxml2-dev

I also needed:

sudo apt-get install libxslt-dev

Answer 2

using Windows 7:

per the "libxml2 is missing" error you reference, I got this too and went back to Cygwin's setup.exe and installed from there (look for it under the "lib" tree).

Installing the DevKit from rubyonrails.org did not help.