source install fails to build lxml and exits (openstack-keystone-fb4cbe9)

[koolhead17]

I am trying to install keystone (openstack-keystone-fb4cbe9) from source and hitting compilation error for lxml.

log summery :-

running build_ext

building 'lxml.etree' extension

creating build/temp.linux-i686-2.7

creating build/temp.linux-i686-2.7/src

creating build/temp.linux-i686-2.7/src/lxml

gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/python2.7 -c src/lxml/lxml.etree.c -o build/temp.linux-i686-2.7/src/lxml/lxml.etree.o -w

In file included from src/lxml/lxml.etree.c:239:0:

src/lxml/etree_defs.h:9:31: fatal error: libxml/xmlversion.h: No such file or directory

compilation terminated.

error: command 'gcc' failed with exit status 1

----------------------------------------

complete summery :-- http://paste.ubuntu.com/883015/

[koolhead17 (koolhead17)]

gosh !!

marking as invalid, missed installing libxml2-dev libxslt1-dev packages.