Error installing Nokogiri 1.5.0 with rails 3.1.0 and ubuntu

Here is the error running bundle install vendor/gems on server:

Installing nokogiri (1.5.0) with native extensions
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

        /home/dtt/.rvm/rubies/ruby-1.9.2-p290/bin/ruby extconf.rb
checking for libxml/parser.h... no
-----
libxml2 is missing.  please visit http://nokogiri.org/tutorials/installing_nokogiri.html for help with installing dependencies.
-----
*** 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 more
details.  You may need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=/home/dtt/.rvm/rubies/ruby-1.9.2-p290/bin/ruby
        --with-zlib-dir
        --without-zlib-dir
        --with-zlib-include
        --without-zlib-include=${zlib-dir}/include
        --with-zlib-lib
        --without-zlib-lib=${zlib-dir}/lib
        --with-iconv-dir
        --without-iconv-dir
        --with-iconv-include
        --without-iconv-include=${iconv-dir}/include
        --with-iconv-lib
        --without-iconv-lib=${iconv-dir}/lib
        --with-xml2-dir
        --without-xml2-dir
        --with-xml2-include
        --without-xml2-include=${xml2-dir}/include
        --with-xml2-lib
        --without-xml2-lib=${xml2-dir}/lib
        --with-xslt-dir
        --without-xslt-dir
        --with-xslt-include
        --without-xslt-include=${xslt-dir}/include
        --with-xslt-lib
        --without-xslt-lib=${xslt-dir}/lib


Gem files will remain installed in /vol/www/emclab/releases/20111104001151/vendor/gems/ruby/1.9.1/gems/nokogiri-1.5.0 for inspection.
Results logged to /vol/www/emclab/releases/20111104001151/vendor/gems/ruby/1.9.1/gems/nokogiri-1.5.0/ext/nokogiri/gem_make.out
An error occured while installing nokogiri (1.5.0), and Bundler cannot continue.
Make sure that `gem install nokogiri -v '1.5.0'` succeeds before bundling.

You can skip this part. The error message is pretty much self explanatory, but the website requires a few more words explaining the code.

Any thoughts?

Solution 1:

You need to have all the necessary libraries installed on your machine. When you installed RVM , it should have listed this for you. On the current version of rvm, you can run rvm requirements to see the exact list. Right now, that list is:

sudo apt-get install build-essential openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-0 libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison subversion

Solution 2:

You are missing some packages. Try running this (Linux only):

$ sudo apt-get install libxslt-dev libxml2-dev

Solution 3:

It looks like a gem dependency error.

You need to run the bundle update command. It will resolve dependencies:

bundle update

Solution 4:

You need to install libxml2.

On Mac OS, using homebrew, this will be:

brew install libxml2

See http://nokogiri.org/tutorials/installing_nokogiri.html.