Installing lxml on CentOS. How to overcome the error?

Question

Python

Installed Python 2.7 on CentOS 6.7 minimal. Registered PATH. Installed pip. When you enter the pip install lxml command, you will get an error:

Compile failed: command 'gcc' failed with exit status 1
cc -I/usr/include/libxml2 -c /tmp/xmlXPathInitC7CEI7.c -o tmp/xmlXPathInitC7CEI7.o
/tmp/xmlXPathInitC7CEI7.c:1:26: error: libxml /xpath.h: No such file or directory
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Could not find function xmlCheckVersion in library libxml2. Is libxml2 installed?
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error: command 'gcc' failed with exit status 1
-------- --------------------------------
Command "/usr/local/bin/python2.7 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-K8ZHxF/lxml/setup.py';exec(compile(getattr(tokenize, ' open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-zCOkGl-record/install -record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-K8ZHxF/lxml/

GCC installed. Required development tools packages are installed

Answer 1

Resolved the issue. First did this:
Then like this:
pip install lxml

Answer 2

Try

apt-get install libxml2-dev
apt-get install libxslt1-dev
pip install lxml

or
easy_install lxml