Setup.py: install lxml with Python2.6 on CentOS
I had the same issue, I managed to install it after installing the package libxslt-devel and python-devel which seems to be your problem:
yum install libxslt-devel python-devel
python setup.py install
Installed /usr/lib/python2.6/site-packages/lxml-2.2.8-py2.6-linux-i686.eggProcessing dependencies for lxml==2.2.8Finished processing dependencies for lxml==2.2.8However since I also installed other packages in the process, you might want to double check libxml2, libxml2-devel and libxslt while you are at it.
Here is some information on how to build lxml: http://lxml.de/build.html
It solved my problem for nokogiri in Centos
sudo yum install -y gcc ruby-devel libxml2 libxml2-devel libxslt libxslt-devel
these works for me
yum -y install python-devel gcc libxml2 libxml2-devel libxslt libxslt-develespecially the python-devel