When trying to install Nokogiri on CentOS 6.3, I got an error saying libxml2 was missing.

■ Error Message

libxml2 is missing.
please visit http://nokogiri.org/tutorials/installing_nokogiri.html for help with installing dependencies.

■ Solution

Install the libraries required by Nokogiri using yum.

# yum -y install libxml2 libxml2-devel libxslt libxslt-devel

That’s all from the Gemba.

【Reference】Nokogiri