src/lxml / etree defs.h: 9: 31: неустранимая ошибка: libxml / xmlversion.ч: нет такого файла или каталога

1. я запускаю следующую команду для установки пакетов в этом файле "
   pip install -r requirements.txt --download-cache=~/tmp/pip-cache".




2. требование.txt содержит pacakages как

# Data formats

# ------------

PIL==1.1.7 # 



html5lib==0.90

httplib2==0.7.4

lxml==2.3.1



# Documentation

# -------------

Sphinx==1.1

docutils==0.8.1



# Testing

# -------

behave==1.1.0

dingus==0.3.2

django-testscenarios==0.7.2

mechanize==0.2.5

mock==0.7.2

testscenarios==0.2

testtools==0.9.14

wsgi_intercept==0.5.1

при переходе к установке пакетов "lxml" я получаю следующее eror

Requirement already satisfied (use --upgrade to upgrade): django-testproject>=0.1.1 in /usr/lib/python2.7/site-packages/django_testproject-0.1.1-py2.7.egg (from django-testscenarios==0.7.2->-r requirements.txt (line 33))

Installing collected packages: lxml, Sphinx, docutils, behave, dingus, mock, testscenarios, testtools, South

  Running setup.py install for lxml

    Building lxml version 2.3.1.

    Building without Cython.

    ERROR: /bin/sh: xslt-config: command not found



    ** make sure the development packages of libxml2 and libxslt are installed **



    Using build configuration of libxslt

    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 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables -D_GNU_SOURCE -fPIC -fwrapv -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables -D_GNU_SOURCE -fPIC -fwrapv -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 output from command /usr/bin/python -c "import setuptools;__file__='/root/Projects/ir/build/lxml/setup.py';execfile(__file__)" install --single-version-externally-managed --record /tmp/pip-SwjFm3-record/install-record.txt:

    Building lxml version 2.3.1.



Building without Cython.



ERROR: /bin/sh: xslt-config: command not found







** make sure the development packages of libxml2 and libxslt are installed **







Using build configuration of libxslt



running install



running build



running build_py



copying src/lxml/cssselect.py -> build/lib.linux-i686-2.7/lxml



copying src/lxml/__init__.py -> build/lib.linux-i686-2.7/lxml



copying src/lxml/sax.py -> build/lib.linux-i686-2.7/lxml



copying src/lxml/pyclasslookup.py -> build/lib.linux-i686-2.7/lxml



copying src/lxml/usedoctest.py -> build/lib.linux-i686-2.7/lxml



copying src/lxml/doctestcompare.py -> build/lib.linux-i686-2.7/lxml



copying src/lxml/_elementpath.py -> build/lib.linux-i686-2.7/lxml



copying src/lxml/ElementInclude.py -> build/lib.linux-i686-2.7/lxml



copying src/lxml/builder.py -> build/lib.linux-i686-2.7/lxml



copying src/lxml/html/clean.py -> build/lib.linux-i686-2.7/lxml/html



copying src/lxml/html/__init__.py -> build/lib.linux-i686-2.7/lxml/html



copying src/lxml/html/_dictmixin.py -> build/lib.linux-i686-2.7/lxml/html



copying src/lxml/html/ElementSoup.py -> build/lib.linux-i686-2.7/lxml/html



copying src/lxml/html/usedoctest.py -> build/lib.linux-i686-2.7/lxml/html



copying src/lxml/html/defs.py -> build/lib.linux-i686-2.7/lxml/html



copying src/lxml/html/builder.py -> build/lib.linux-i686-2.7/lxml/html



copying src/lxml/html/_html5builder.py -> build/lib.linux-i686-2.7/lxml/html



copying src/lxml/html/diff.py -> build/lib.linux-i686-2.7/lxml/html



copying src/lxml/html/html5parser.py -> build/lib.linux-i686-2.7/lxml/html



copying src/lxml/html/_diffcommand.py -> build/lib.linux-i686-2.7/lxml/html



copying src/lxml/html/_setmixin.py -> build/lib.linux-i686-2.7/lxml/html



copying src/lxml/html/soupparser.py -> build/lib.linux-i686-2.7/lxml/html



copying src/lxml/html/formfill.py -> build/lib.linux-i686-2.7/lxml/html



copying src/lxml/isoschematron/__init__.py -> build/lib.linux-i686-2.7/lxml/isoschematron



copying src/lxml/etreepublic.pxd -> build/lib.linux-i686-2.7/lxml



copying src/lxml/tree.pxd -> build/lib.linux-i686-2.7/lxml



copying src/lxml/etree_defs.h -> build/lib.linux-i686-2.7/lxml



copying src/lxml/isoschematron/resources/rng/iso-schematron.rng -> build/lib.linux-i686-2.7/lxml/isoschematron/resources/rng



copying src/lxml/isoschematron/resources/xsl/XSD2Schtrn.xsl -> build/lib.linux-i686-2.7/lxml/isoschematron/resources/xsl



copying src/lxml/isoschematron/resources/xsl/RNG2Schtrn.xsl -> build/lib.linux-i686-2.7/lxml/isoschematron/resources/xsl



copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_svrl_for_xslt1.xsl -> build/lib.linux-i686-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1



copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_schematron_message.xsl -> build/lib.linux-i686-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1



copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_schematron_skeleton_for_xslt1.xsl -> build/lib.linux-i686-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1



copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_abstract_expand.xsl -> build/lib.linux-i686-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1



copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_dsdl_include.xsl -> build/lib.linux-i686-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1



copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/readme.txt -> build/lib.linux-i686-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1



running build_ext



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 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables -D_GNU_SOURCE -fPIC -fwrapv -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables -D_GNU_SOURCE -fPIC -fwrapv -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



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

Command /usr/bin/python -c "import setuptools;__file__='/root/Projects/ir/build/lxml/setup.py';execfile(__file__)" install --single-version-externally-managed --record /tmp/pip-SwjFm3-record/install-record.txt failed with error code 1

Storing complete log in /root/.pip/pip.log

может ли кто-нибудь проверить и направить меня, в чем будет проблема и почему?Любой пакет отсутствует для установки.