no puedo instalar lxml en Ubuntu 12.04

He estado intentando instalar lxml usando pip install lxml y me pip install lxml el error a continuación. He usado apt-get install python-dev libxml2 libxml2-dev libxslt-dev antes (sugerido en otras respuestas) pero sigo recibiendo el mismo error. No utilicé control-c.

 pip install lxml Downloading/unpacking lxml Downloading lxml-3.2.4.tar.gz (3.3MB): 3.3MB downloaded Running setup.py egg_info for package lxml /usr/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'bugtrack_url' warnings.warn(msg) Building lxml version 3.2.4. Building without Cython. Using build configuration of libxslt 1.1.26 Building against libxml2/libxslt in the following directory: /usr/lib/x86_64-linux-gnu warning: no previously-included files found matching '*.py' warning: no files found matching '*.txt' under directory 'src/lxml/tests' Installing collected packages: lxml Running setup.py install for lxml /usr/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'bugtrack_url' warnings.warn(msg) Building lxml version 3.2.4. Building without Cython. Using build configuration of libxslt 1.1.26 Building against libxml2/libxslt in the following directory: /usr/lib/x86_64-linux-gnu building 'lxml.etree' extension gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/libxml2 -I/home/mlkang/Envs/env1/build/lxml/src/lxml/includes -I/usr/include/python2.7 -c src/lxml/lxml.etree.c -o build/temp.linux-x86_64-2.7/src/lxml/lxml.etree.o src/lxml/lxml.etree.c: In function '__pyx_pf_4lxml_5etree_11TreeBuilder_4data': src/lxml/lxml.etree.c:97799:74: warning: passing argument 1 of '__pyx_f_4lxml_5etree_11TreeBuilder__handleSaxData' from incompatible pointer type [enabled by default] src/lxml/lxml.etree.c:97400:12: 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:97936:75: warning: passing argument 1 of '__pyx_f_4lxml_5etree_11TreeBuilder__handleSaxStart' from incompatible pointer type [enabled by default] src/lxml/lxml.etree.c:97100:18: 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:97994:73: warning: passing argument 1 of '__pyx_f_4lxml_5etree_11TreeBuilder__handleSaxEnd' from incompatible pointer type [enabled by default] src/lxml/lxml.etree.c:97324:18: 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:98152:72: warning: passing argument 1 of '__pyx_f_4lxml_5etree_11TreeBuilder__handleSaxPi' from incompatible pointer type [enabled by default] src/lxml/lxml.etree.c:97440:18: 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:98205:77: warning: passing argument 1 of '__pyx_f_4lxml_5etree_11TreeBuilder__handleSaxComment' from incompatible pointer type [enabled by default] src/lxml/lxml.etree.c:97566:18: 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:136086:9: warning: enumeration value '__pyx_e_4lxml_5etree_PARSER_DATA_INVALID' not handled in switch [-Wswitch] src/lxml/lxml.etree.c: In function '__pyx_pf_4lxml_5etree_4XSLT_18__call__': src/lxml/lxml.etree.c:140160:81: warning: passing argument 1 of '__pyx_f_4lxml_5etree_12_XSLTContext__copy' from incompatible pointer type [enabled by default] src/lxml/lxml.etree.c:138095:52: 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:141558:79: warning: passing argument 1 of '__pyx_f_4lxml_5etree_12_XSLTContext__copy' from incompatible pointer type [enabled by default] src/lxml/lxml.etree.c:138095:52: 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:12770:13: warning: '__pyx_f_4lxml_5etree_displayNode' defined but not used [-Wunused-function] gcc: internal compiler error: Killed (program cc1) Please submit a full bug report, with preprocessed source if appropriate. See  for instructions. error: command 'gcc' failed with exit status 4 Complete output from command /home/mlkang/Envs/env1/bin/python -c "import setuptools;__file__='/home/mlkang/Envs/env1/build/lxml/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-zVBvtO-record/install-record.txt --single-version-externally-managed --install-headers /home/mlkang/Envs/env1/include/site/python2.7: /usr/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'bugtrack_url' warnings.warn(msg) Building lxml version 3.2.4. Building without Cython. Using build configuration of libxslt 1.1.26 Building against libxml2/libxslt in the following directory: /usr/lib/x86_64-linux-gnu running install running build running build_py creating build creating build/lib.linux-x86_64-2.7 creating build/lib.linux-x86_64-2.7/lxml copying src/lxml/__init__.py -> build/lib.linux-x86_64-2.7/lxml copying src/lxml/_elementpath.py -> build/lib.linux-x86_64-2.7/lxml copying src/lxml/ElementInclude.py -> build/lib.linux-x86_64-2.7/lxml copying src/lxml/cssselect.py -> build/lib.linux-x86_64-2.7/lxml copying src/lxml/usedoctest.py -> build/lib.linux-x86_64-2.7/lxml copying src/lxml/pyclasslookup.py -> build/lib.linux-x86_64-2.7/lxml copying src/lxml/doctestcompare.py -> build/lib.linux-x86_64-2.7/lxml copying src/lxml/sax.py -> build/lib.linux-x86_64-2.7/lxml copying src/lxml/builder.py -> build/lib.linux-x86_64-2.7/lxml creating build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/__init__.py -> build/lib.linux-x86_64-2.7/lxml/includes creating build/lib.linux-x86_64-2.7/lxml/html copying src/lxml/html/diff.py -> build/lib.linux-x86_64-2.7/lxml/html copying src/lxml/html/_diffcommand.py -> build/lib.linux-x86_64-2.7/lxml/html copying src/lxml/html/__init__.py -> build/lib.linux-x86_64-2.7/lxml/html copying src/lxml/html/clean.py -> build/lib.linux-x86_64-2.7/lxml/html copying src/lxml/html/html5parser.py -> build/lib.linux-x86_64-2.7/lxml/html copying src/lxml/html/_setmixin.py -> build/lib.linux-x86_64-2.7/lxml/html copying src/lxml/html/usedoctest.py -> build/lib.linux-x86_64-2.7/lxml/html copying src/lxml/html/soupparser.py -> build/lib.linux-x86_64-2.7/lxml/html copying src/lxml/html/defs.py -> build/lib.linux-x86_64-2.7/lxml/html copying src/lxml/html/ElementSoup.py -> build/lib.linux-x86_64-2.7/lxml/html copying src/lxml/html/_html5builder.py -> build/lib.linux-x86_64-2.7/lxml/html copying src/lxml/html/formfill.py -> build/lib.linux-x86_64-2.7/lxml/html copying src/lxml/html/builder.py -> build/lib.linux-x86_64-2.7/lxml/html creating build/lib.linux-x86_64-2.7/lxml/isoschematron copying src/lxml/isoschematron/__init__.py -> build/lib.linux-x86_64-2.7/lxml/isoschematron copying src/lxml/lxml.etree.h -> build/lib.linux-x86_64-2.7/lxml copying src/lxml/lxml.etree_api.h -> build/lib.linux-x86_64-2.7/lxml copying src/lxml/includes/xmlerror.pxd -> build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/schematron.pxd -> build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/config.pxd -> build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/htmlparser.pxd -> build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/xslt.pxd -> build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/c14n.pxd -> build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/xmlparser.pxd -> build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/relaxng.pxd -> build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/uri.pxd -> build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/etreepublic.pxd -> build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/xmlschema.pxd -> build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/dtdvalid.pxd -> build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/xinclude.pxd -> build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/xpath.pxd -> build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/tree.pxd -> build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/lxml-version.h -> build/lib.linux-x86_64-2.7/lxml/includes copying src/lxml/includes/etree_defs.h -> build/lib.linux-x86_64-2.7/lxml/includes creating build/lib.linux-x86_64-2.7/lxml/isoschematron/resources creating build/lib.linux-x86_64-2.7/lxml/isoschematron/resources/rng copying src/lxml/isoschematron/resources/rng/iso-schematron.rng -> build/lib.linux-x86_64-2.7/lxml/isoschematron/resources/rng creating build/lib.linux-x86_64-2.7/lxml/isoschematron/resources/xsl copying src/lxml/isoschematron/resources/xsl/XSD2Schtrn.xsl -> build/lib.linux-x86_64-2.7/lxml/isoschematron/resources/xsl copying src/lxml/isoschematron/resources/xsl/RNG2Schtrn.xsl -> build/lib.linux-x86_64-2.7/lxml/isoschematron/resources/xsl creating build/lib.linux-x86_64-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1 copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_dsdl_include.xsl -> build/lib.linux-x86_64-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1 copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_schematron_message.xsl -> build/lib.linux-x86_64-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1 copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_svrl_for_xslt1.xsl -> build/lib.linux-x86_64-2.7/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-x86_64-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1 copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_abstract_expand.xsl -> build/lib.linux-x86_64-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1 copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/readme.txt -> build/lib.linux-x86_64-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1 running build_ext building 'lxml.etree' extension creating build/temp.linux-x86_64-2.7 creating build/temp.linux-x86_64-2.7/src creating build/temp.linux-x86_64-2.7/src/lxml gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/libxml2 -I/home/mlkang/Envs/env1/build/lxml/src/lxml/includes -I/usr/include/python2.7 -c src/lxml/lxml.etree.c -o build/temp.linux-x86_64-2.7/src/lxml/lxml.etree.o src/lxml/lxml.etree.c: In function '__pyx_pf_4lxml_5etree_11TreeBuilder_4data': src/lxml/lxml.etree.c:97799:74: warning: passing argument 1 of '__pyx_f_4lxml_5etree_11TreeBuilder__handleSaxData' from incompatible pointer type [enabled by default] src/lxml/lxml.etree.c:97400:12: 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:97936:75: warning: passing argument 1 of '__pyx_f_4lxml_5etree_11TreeBuilder__handleSaxStart' from incompatible pointer type [enabled by default] src/lxml/lxml.etree.c:97100:18: 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:97994:73: warning: passing argument 1 of '__pyx_f_4lxml_5etree_11TreeBuilder__handleSaxEnd' from incompatible pointer type [enabled by default] src/lxml/lxml.etree.c:97324:18: 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:98152:72: warning: passing argument 1 of '__pyx_f_4lxml_5etree_11TreeBuilder__handleSaxPi' from incompatible pointer type [enabled by default] src/lxml/lxml.etree.c:97440:18: 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:98205:77: warning: passing argument 1 of '__pyx_f_4lxml_5etree_11TreeBuilder__handleSaxComment' from incompatible pointer type [enabled by default] src/lxml/lxml.etree.c:97566:18: 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:136086:9: warning: enumeration value '__pyx_e_4lxml_5etree_PARSER_DATA_INVALID' not handled in switch [-Wswitch] src/lxml/lxml.etree.c: In function '__pyx_pf_4lxml_5etree_4XSLT_18__call__': src/lxml/lxml.etree.c:140160:81: warning: passing argument 1 of '__pyx_f_4lxml_5etree_12_XSLTContext__copy' from incompatible pointer type [enabled by default] src/lxml/lxml.etree.c:138095:52: 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:141558:79: warning: passing argument 1 of '__pyx_f_4lxml_5etree_12_XSLTContext__copy' from incompatible pointer type [enabled by default] src/lxml/lxml.etree.c:138095:52: 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:12770:13: warning: '__pyx_f_4lxml_5etree_displayNode' defined but not used [-Wunused-function] gcc: internal compiler error: Killed (program cc1) Please submit a full bug report, with preprocessed source if appropriate. See  for instructions. error: command 'gcc' failed with exit status 4 ---------------------------------------- 

Intenta esto para obtener los deps:

 apt-get build-dep python-lxml 

Tuve exactamente este problema Resultó ser un problema de memoria: estaba instalando reporter.py, que depende de lxml, en un servidor con solo 500 MB de RAM, de los cuales solo 150 MB eran gratuitos. Maté algunas cosas para obtener hasta ~ 300 MB gratis, y solo logré exprimir la instalación de lxml. (Ver TOP mostró que la memoria disponible bajaba a 4MB en un momento dado)

vea http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48796