Can't install lxml on CentOS

I'm trying to install lxml but having some difficulties:

[root@ip-xx-xxx-xx-113 init.d]# pip install lxml Downloading/unpacking lxml Running setup.py egg_info for package lxml /usr/lib64/python2.6/distutils/dist.py:266: UserWarning: Unknown distribution option: 'bugtrack_url' warnings.warn(msg) Building lxml version 3.3.0.beta2. Building without Cython. Using build configuration of libxslt 1.1.26 Building against libxml2/libxslt in the following directory: /usr/lib64 warning: no files found matching '*.py' under directory 'fake_pyrex' Installing collected packages: lxml Running setup.py install for lxml /usr/lib64/python2.6/distutils/dist.py:266: UserWarning: Unknown distribution option: 'bugtrack_url' warnings.warn(msg) Building lxml version 3.3.0.beta2. Building without Cython. Using build configuration of libxslt 1.1.26 Building against libxml2/libxslt in the following directory: /usr/lib64 building 'lxml.etree' extension gcc -pthread -fno-strict-aliasing -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -fPIC -I/usr/include/libxml2 -I/tmp/pip-build-root/lxml/src/lxml/includes -I/usr/include/python2.6 -c src/lxml/lxml.etree.c -o build/temp.linux-x86_64-2.6/src/lxml/lxml.etree.o src/lxml/lxml.etree.c: In function ‘__pyx_pf_4lxml_5etree_11TreeBuilder_4data’: src/lxml/lxml.etree.c:102248: warning: passing argument 1 of ‘__pyx_f_4lxml_5etree_11TreeBuilder__handleSaxData’ from incompatible pointer type src/lxml/lxml.etree.c:101849: note: expected ‘struct __pyx_obj_4lxml_5etree_TreeBuilder *’ but argument is of type ‘struct __pyx_obj_4lxml_5etree__SaxParserTarget *’ src/lxml/lxml.etree.c: In function ‘__pyx_pf_4lxml_5etree_11TreeBuilder_6start’: src/lxml/lxml.etree.c:102385: warning: passing argument 1 of ‘__pyx_f_4lxml_5etree_11TreeBuilder__handleSaxStart’ from incompatible pointer type src/lxml/lxml.etree.c:101549: note: expected ‘struct __pyx_obj_4lxml_5etree_TreeBuilder *’ but argument is of type ‘struct __pyx_obj_4lxml_5etree__SaxParserTarget *’ src/lxml/lxml.etree.c: In function ‘__pyx_pf_4lxml_5etree_11TreeBuilder_8end’: src/lxml/lxml.etree.c:102443: warning: passing argument 1 of ‘__pyx_f_4lxml_5etree_11TreeBuilder__handleSaxEnd’ from incompatible pointer type src/lxml/lxml.etree.c:101773: note: expected ‘struct __pyx_obj_4lxml_5etree_TreeBuilder *’ but argument is of type ‘struct __pyx_obj_4lxml_5etree__SaxParserTarget *’ src/lxml/lxml.etree.c: In function ‘__pyx_pf_4lxml_5etree_11TreeBuilder_10pi’: src/lxml/lxml.etree.c:102601: warning: passing argument 1 of ‘__pyx_f_4lxml_5etree_11TreeBuilder__handleSaxPi’ from incompatible pointer type src/lxml/lxml.etree.c:101889: note: expected ‘struct __pyx_obj_4lxml_5etree_TreeBuilder *’ but argument is of type ‘struct __pyx_obj_4lxml_5etree__SaxParserTarget *’ src/lxml/lxml.etree.c: In function ‘__pyx_pf_4lxml_5etree_11TreeBuilder_12comment’: src/lxml/lxml.etree.c:102654: warning: passing argument 1 of ‘__pyx_f_4lxml_5etree_11TreeBuilder__handleSaxComment’ from incompatible pointer type src/lxml/lxml.etree.c:102015: note: expected ‘struct __pyx_obj_4lxml_5etree_TreeBuilder *’ but argument is of type ‘struct __pyx_obj_4lxml_5etree__SaxParserTarget *’ src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree__xslt_resolve_from_python’: src/lxml/lxml.etree.c:137740: warning: enumeration value ‘__pyx_e_4lxml_5etree_PARSER_DATA_INVALID’ not handled in switch src/lxml/lxml.etree.c: In function ‘__pyx_pf_4lxml_5etree_4XSLT_18__call__’: src/lxml/lxml.etree.c:141814: warning: passing argument 1 of ‘__pyx_f_4lxml_5etree_12_XSLTContext__copy’ from incompatible pointer type src/lxml/lxml.etree.c:139749: note: expected ‘struct __pyx_obj_4lxml_5etree__XSLTContext *’ but argument is of type ‘struct __pyx_obj_4lxml_5etree__BaseContext *’ src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree__copyXSLT’: src/lxml/lxml.etree.c:143212: warning: passing argument 1 of ‘__pyx_f_4lxml_5etree_12_XSLTContext__copy’ from incompatible pointer type src/lxml/lxml.etree.c:139749: note: expected ‘struct __pyx_obj_4lxml_5etree__XSLTContext *’ but argument is of type ‘struct __pyx_obj_4lxml_5etree__BaseContext *’ src/lxml/lxml.etree.c: At top level: src/lxml/lxml.etree.c:12826: warning: ‘__pyx_f_4lxml_5etree_displayNode’ defined but not used src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_11_BaseParser__parseDocFromFile’: src/lxml/lxml.etree.c:90304: warning: ‘__pyx_r’ may be used uninitialized in this function src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_11_BaseParser__parseUnicodeDoc’: src/lxml/lxml.etree.c:89619: warning: ‘__pyx_r’ may be used uninitialized in this function src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_11_BaseParser__parseDoc’: src/lxml/lxml.etree.c:89970: warning: ‘__pyx_r’ may be used uninitialized in this function src/lxml/lxml.etree.c: In function ‘__pyx_f_4lxml_5etree_11_BaseParser__parseDocFromFilelike’: src/lxml/lxml.etree.c:90623: warning: ‘__pyx_r’ may be used uninitialized in this function 

SO the output just hangs and nothing is installed.

Here is some information about machine:

[root@ip-xx-xxx-xx-113 ec2-user]# cat /proc/version Linux version 2.6.32-431.el6.x86_64 ([email protected]) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-4) (GCC) ) #1 SMP Fri Nov 22 03:15:09 UTC 2013 [root@ip-xx-xxx-xx-113 ec2-user]# cat /etc/issue CentOS release 6.5 (Final) Kernel \r on an \m [root@ip-xx-xxx-xx-113 ec2-user]# python --version Python 2.6.6