python3.10 bdist_wheel did not run successfully when install cffi

python3.10 bdist_wheel did not run successfully when install cffi - python

i installed Ubuntu 22.04 (fresh installation) an create an virtualenv with Python 3.10.
The installed packages are as follows:
libpython3.10:amd64
libpython3.10-dbg:amd64
libpython3.10-dev:amd64
libpython3.10-minimal:amd64
libpython3.10-stdlib:amd64
python3.10
python3.10-dbg
python3.10-dev
python3.10-minimal
python3.10-venv
When I try to install the application requirements file I see this error:
pip install cffi==1.14.0
Collecting cffi==1.14.0
Downloading cffi-1.14.0.tar.gz (463 kB)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 463.1/463.1 KB 6.8 MB/s eta 0:00:00
Preparing metadata (setup.py) ... done
Requirement already satisfied: pycparser in ./env/lib/python3.10/site-packages (from cffi==1.14.0) (2.18)
Building wheels for collected packages: cffi
Building wheel for cffi (setup.py) ... error
error: subprocess-exited-with-error
× python setup.py bdist_wheel did not run successfully.
│ exit code: 1
╰─> [56 lines of output]
running bdist_wheel
running build
running build_py
creating build
creating build/lib.linux-x86_64-3.10
creating build/lib.linux-x86_64-3.10/cffi
copying cffi/api.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/backend_ctypes.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/lock.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/verifier.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/vengine_gen.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/cparser.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/recompiler.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/pkgconfig.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/ffiplatform.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/model.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/commontypes.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/setuptools_ext.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/vengine_cpy.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/__init__.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/cffi_opcode.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/error.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/_cffi_include.h -> build/lib.linux-x86_64-3.10/cffi
copying cffi/parse_c_type.h -> build/lib.linux-x86_64-3.10/cffi
copying cffi/_embedding.h -> build/lib.linux-x86_64-3.10/cffi
copying cffi/_cffi_errors.h -> build/lib.linux-x86_64-3.10/cffi
running build_ext
building '_cffi_backend' extension
creating build/temp.linux-x86_64-3.10
creating build/temp.linux-x86_64-3.10/c
x86_64-linux-gnu-gcc -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -g -fwrapv -O2 -g -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -DUSE__THREAD -DHAVE_SYNC_SYNCHRONIZE -I/usr/include/ffi -I/usr/include/libffi -I/opt/adapter-sqlpooler/env/include -I/usr/include/python3.10 -c c/_cffi_backend.c -o build/temp.linux-x86_64-3.10/c/_cffi_backend.o
c/_cffi_backend.c: In function ‘ctypedescr_dealloc’:
c/_cffi_backend.c:407:23: error: lvalue required as left operand of assignment
407 | Py_REFCNT(ct) = 43;
| ^
c/_cffi_backend.c:410:23: error: lvalue required as left operand of assignment
410 | Py_REFCNT(ct) = 0;
| ^
c/_cffi_backend.c: In function ‘prepare_callback_info_tuple’:
c/_cffi_backend.c:6185:5: warning: ‘PyEval_InitThreads’ is deprecated [-Wdeprecated-declarations]
6185 | PyEval_InitThreads();
| ^~~~~~~~~~~~~~~~~~
In file included from /usr/include/python3.10/Python.h:130,
from c/_cffi_backend.c:2:
/usr/include/python3.10/ceval.h:122:37: note: declared here
122 | Py_DEPRECATED(3.9) PyAPI_FUNC(void) PyEval_InitThreads(void);
| ^~~~~~~~~~~~~~~~~~
c/_cffi_backend.c: In function ‘b_callback’:
c/_cffi_backend.c:6245:5: warning: ‘ffi_prep_closure’ is deprecated: use ffi_prep_closure_loc instead [-Wdeprecated-declarations]
6245 | if (ffi_prep_closure(closure, &cif_descr->cif,
| ^~
In file included from c/_cffi_backend.c:15:
/usr/include/x86_64-linux-gnu/ffi.h:347:1: note: declared here
347 | ffi_prep_closure (ffi_closure*,
| ^~~~~~~~~~~~~~~~
error: command '/usr/bin/x86_64-linux-gnu-gcc' failed with exit code 1
[end of output]
note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for cffi
Running setup.py clean for cffi
Failed to build cffi
Installing collected packages: cffi
Running setup.py install for cffi ... error
error: subprocess-exited-with-error
× Running setup.py install for cffi did not run successfully.
│ exit code: 1
╰─> [58 lines of output]
running install
/opt/adapter-sqlpooler/env/lib/python3.10/site-packages/setuptools/command/install.py:34: SetuptoolsDeprecationWarning: setup.py install is deprecated. Use build and pip and other standards-based tools.
warnings.warn(
running build
running build_py
creating build
creating build/lib.linux-x86_64-3.10
creating build/lib.linux-x86_64-3.10/cffi
copying cffi/api.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/backend_ctypes.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/lock.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/verifier.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/vengine_gen.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/cparser.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/recompiler.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/pkgconfig.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/ffiplatform.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/model.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/commontypes.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/setuptools_ext.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/vengine_cpy.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/__init__.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/cffi_opcode.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/error.py -> build/lib.linux-x86_64-3.10/cffi
copying cffi/_cffi_include.h -> build/lib.linux-x86_64-3.10/cffi
copying cffi/parse_c_type.h -> build/lib.linux-x86_64-3.10/cffi
copying cffi/_embedding.h -> build/lib.linux-x86_64-3.10/cffi
copying cffi/_cffi_errors.h -> build/lib.linux-x86_64-3.10/cffi
running build_ext
building '_cffi_backend' extension
creating build/temp.linux-x86_64-3.10
creating build/temp.linux-x86_64-3.10/c
x86_64-linux-gnu-gcc -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -g -fwrapv -O2 -g -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -DUSE__THREAD -DHAVE_SYNC_SYNCHRONIZE -I/usr/include/ffi -I/usr/include/libffi -I/opt/adapter-sqlpooler/env/include -I/usr/include/python3.10 -c c/_cffi_backend.c -o build/temp.linux-x86_64-3.10/c/_cffi_backend.o
c/_cffi_backend.c: In function ‘ctypedescr_dealloc’:
c/_cffi_backend.c:407:23: error: lvalue required as left operand of assignment
407 | Py_REFCNT(ct) = 43;
| ^
c/_cffi_backend.c:410:23: error: lvalue required as left operand of assignment
410 | Py_REFCNT(ct) = 0;
| ^
c/_cffi_backend.c: In function ‘prepare_callback_info_tuple’:
c/_cffi_backend.c:6185:5: warning: ‘PyEval_InitThreads’ is deprecated [-Wdeprecated-declarations]
6185 | PyEval_InitThreads();
| ^~~~~~~~~~~~~~~~~~
In file included from /usr/include/python3.10/Python.h:130,
from c/_cffi_backend.c:2:
/usr/include/python3.10/ceval.h:122:37: note: declared here
122 | Py_DEPRECATED(3.9) PyAPI_FUNC(void) PyEval_InitThreads(void);
| ^~~~~~~~~~~~~~~~~~
c/_cffi_backend.c: In function ‘b_callback’:
c/_cffi_backend.c:6245:5: warning: ‘ffi_prep_closure’ is deprecated: use ffi_prep_closure_loc instead [-Wdeprecated-declarations]
6245 | if (ffi_prep_closure(closure, &cif_descr->cif,
| ^~
In file included from c/_cffi_backend.c:15:
/usr/include/x86_64-linux-gnu/ffi.h:347:1: note: declared here
347 | ffi_prep_closure (ffi_closure*,
| ^~~~~~~~~~~~~~~~
error: command '/usr/bin/x86_64-linux-gnu-gcc' failed with exit code 1
[end of output]
note: This error originates from a subprocess, and is likely not a problem with pip.
error: legacy-install-failure
× Encountered error while trying to install package.
╰─> cffi
note: This is an issue with the package mentioned above, not pip.
hint: See above for output from the failure.
any ideas??
I have tried reinstalling the Python installation packages but the problem persists, I have read some publications and indicate that the problem may be caused because there are no headers related to the python dev package.

Most probably cffi==1.14.0 is not compatible with Python 3.10. Try the latest version:
pip install cffi==1.15.1

Related

Problem installing django-auth-ldap on Centos 8

I have problem with finalizing netbox installation on Centos8. Netbox is working fine with Gunicorn and Apache. I wanted to add LDAP auth but there is a problem with django-auth-ldap installation. I have virtual env and python version 3.9. Pip is up to date ( 21.3.1). Can you tell my why i got this errors and what can I do?
(venv) server # python -m pip --proxy http://x.x.x.x:8080 install django-auth-ldap
Collecting django-auth-ldap
Using cached django_auth_ldap-4.0.0-py3-none-any.whl (20 kB)
Collecting python-ldap>=3.1
Using cached python-ldap-3.4.0.tar.gz (376 kB)
Installing build dependencies ... done
Getting requirements to build wheel ... done
Preparing metadata (pyproject.toml) ... done
Requirement already satisfied: Django>=2.2 in /opt/netbox-3.1.6/venv/lib/python3.9/site-packages (from django-auth-ldap) (3.2.11)
Requirement already satisfied: sqlparse>=0.2.2 in /opt/netbox-3.1.6/venv/lib/python3.9/site-packages (from Django>=2.2->django-auth-ldap) (0.4.2)
Requirement already satisfied: pytz in /opt/netbox-3.1.6/venv/lib/python3.9/site-packages (from Django>=2.2->django-auth-ldap) (2021.3)
Requirement already satisfied: asgiref<4,>=3.3.2 in /opt/netbox-3.1.6/venv/lib/python3.9/site-packages (from Django>=2.2->django-auth-ldap) (3.4.1)
Requirement already satisfied: pyasn1-modules>=0.1.5 in /opt/netbox-3.1.6/venv/lib/python3.9/site-packages (from python-ldap>=3.1->django-auth-ldap) (0.2.8)
Requirement already satisfied: pyasn1>=0.3.7 in /opt/netbox-3.1.6/venv/lib/python3.9/site-packages (from python-ldap>=3.1->django-auth-ldap) (0.4.8)
Building wheels for collected packages: python-ldap
Building wheel for python-ldap (pyproject.toml) ... error
ERROR: Command errored out with exit status 1:
command: /opt/netbox-3.1.6/venv/bin/python /opt/netbox-3.1.6/venv/lib64/python3.9/site-packages/pip/_vendor/pep517/in_process/_in_process.py build_wheel /tmp/tmpo78utvm4
cwd: /tmp/pip-install-bnfhe42v/python-ldap_e4bf3926de1e4da5a798e591556ac981
Complete output (75 lines):
running bdist_wheel
running build
running build_py
creating build
creating build/lib.linux-x86_64-3.9
copying Lib/ldapurl.py -> build/lib.linux-x86_64-3.9
copying Lib/ldif.py -> build/lib.linux-x86_64-3.9
creating build/lib.linux-x86_64-3.9/ldap
copying Lib/ldap/resiter.py -> build/lib.linux-x86_64-3.9/ldap
copying Lib/ldap/sasl.py -> build/lib.linux-x86_64-3.9/ldap
copying Lib/ldap/modlist.py -> build/lib.linux-x86_64-3.9/ldap
copying Lib/ldap/async.py -> build/lib.linux-x86_64-3.9/ldap
copying Lib/ldap/constants.py -> build/lib.linux-x86_64-3.9/ldap
copying Lib/ldap/filter.py -> build/lib.linux-x86_64-3.9/ldap
copying Lib/ldap/asyncsearch.py -> build/lib.linux-x86_64-3.9/ldap
copying Lib/ldap/cidict.py -> build/lib.linux-x86_64-3.9/ldap
copying Lib/ldap/ldapobject.py -> build/lib.linux-x86_64-3.9/ldap
copying Lib/ldap/compat.py -> build/lib.linux-x86_64-3.9/ldap
copying Lib/ldap/functions.py -> build/lib.linux-x86_64-3.9/ldap
copying Lib/ldap/pkginfo.py -> build/lib.linux-x86_64-3.9/ldap
copying Lib/ldap/__init__.py -> build/lib.linux-x86_64-3.9/ldap
copying Lib/ldap/syncrepl.py -> build/lib.linux-x86_64-3.9/ldap
copying Lib/ldap/logger.py -> build/lib.linux-x86_64-3.9/ldap
copying Lib/ldap/dn.py -> build/lib.linux-x86_64-3.9/ldap
creating build/lib.linux-x86_64-3.9/ldap/controls
copying Lib/ldap/controls/readentry.py -> build/lib.linux-x86_64-3.9/ldap/controls
copying Lib/ldap/controls/pagedresults.py -> build/lib.linux-x86_64-3.9/ldap/controls
copying Lib/ldap/controls/openldap.py -> build/lib.linux-x86_64-3.9/ldap/controls
copying Lib/ldap/controls/psearch.py -> build/lib.linux-x86_64-3.9/ldap/controls
copying Lib/ldap/controls/libldap.py -> build/lib.linux-x86_64-3.9/ldap/controls
copying Lib/ldap/controls/ppolicy.py -> build/lib.linux-x86_64-3.9/ldap/controls
copying Lib/ldap/controls/__init__.py -> build/lib.linux-x86_64-3.9/ldap/controls
copying Lib/ldap/controls/deref.py -> build/lib.linux-x86_64-3.9/ldap/controls
copying Lib/ldap/controls/sessiontrack.py -> build/lib.linux-x86_64-3.9/ldap/controls
copying Lib/ldap/controls/simple.py -> build/lib.linux-x86_64-3.9/ldap/controls
copying Lib/ldap/controls/vlv.py -> build/lib.linux-x86_64-3.9/ldap/controls
copying Lib/ldap/controls/pwdpolicy.py -> build/lib.linux-x86_64-3.9/ldap/controls
copying Lib/ldap/controls/sss.py -> build/lib.linux-x86_64-3.9/ldap/controls
creating build/lib.linux-x86_64-3.9/ldap/extop
copying Lib/ldap/extop/dds.py -> build/lib.linux-x86_64-3.9/ldap/extop
copying Lib/ldap/extop/passwd.py -> build/lib.linux-x86_64-3.9/ldap/extop
copying Lib/ldap/extop/__init__.py -> build/lib.linux-x86_64-3.9/ldap/extop
creating build/lib.linux-x86_64-3.9/ldap/schema
copying Lib/ldap/schema/__init__.py -> build/lib.linux-x86_64-3.9/ldap/schema
copying Lib/ldap/schema/subentry.py -> build/lib.linux-x86_64-3.9/ldap/schema
copying Lib/ldap/schema/models.py -> build/lib.linux-x86_64-3.9/ldap/schema
copying Lib/ldap/schema/tokenizer.py -> build/lib.linux-x86_64-3.9/ldap/schema
creating build/lib.linux-x86_64-3.9/slapdtest
copying Lib/slapdtest/_slapdtest.py -> build/lib.linux-x86_64-3.9/slapdtest
copying Lib/slapdtest/__init__.py -> build/lib.linux-x86_64-3.9/slapdtest
running egg_info
no previously-included directories found matching 'Doc/.build'
writing manifest file 'Lib/python_ldap.egg-info/SOURCES.txt'
creating build/lib.linux-x86_64-3.9/slapdtest/certs
copying Lib/slapdtest/certs/README -> build/lib.linux-x86_64-3.9/slapdtest/certs
copying Lib/slapdtest/certs/ca.conf -> build/lib.linux-x86_64-3.9/slapdtest/certs
copying Lib/slapdtest/certs/ca.pem -> build/lib.linux-x86_64-3.9/slapdtest/certs
copying Lib/slapdtest/certs/client.conf -> build/lib.linux-x86_64-3.9/slapdtest/certs
copying Lib/slapdtest/certs/client.key -> build/lib.linux-x86_64-3.9/slapdtest/certs
copying Lib/slapdtest/certs/client.pem -> build/lib.linux-x86_64-3.9/slapdtest/certs
copying Lib/slapdtest/certs/gencerts.sh -> build/lib.linux-x86_64-3.9/slapdtest/certs
copying Lib/slapdtest/certs/gennssdb.sh -> build/lib.linux-x86_64-3.9/slapdtest/certs
copying Lib/slapdtest/certs/server.conf -> build/lib.linux-x86_64-3.9/slapdtest/certs
copying Lib/slapdtest/certs/server.key -> build/lib.linux-x86_64-3.9/slapdtest/certs
copying Lib/slapdtest/certs/server.pem -> build/lib.linux-x86_64-3.9/slapdtest/certs
running build_ext
creating build/temp.linux-x86_64-3.9
creating build/temp.linux-x86_64-3.9/Modules
gcc -pthread -Wno-unused-result -Wsign-compare -DDYNAMIC_ANNOTATIONS_ENABLED=1 -DNDEBUG -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -fPIC -DHAVE_SASL -DHAVE_TLS -DHAVE_LIBLDAP_R -DHAVE_LIBLDAP_R -DLDAPMODULE_VERSION=3.4.0 "-DLDAPMODULE_AUTHOR=python-ldap project" "-DLDAPMODULE_LICENSE=Python style" -IModules -I/opt/netbox-3.1.6/venv/include -I/usr/include/python3.9 -c Modules/LDAPObject.c -o build/temp.linux-x86_64-3.9/Modules/LDAPObject.o
In file included from Modules/LDAPObject.c:3:
Modules/common.h:9:10: fatal error: Python.h: No such file or directory
#include "Python.h"
^~~~~~~~~~
compilation terminated.
error: command '/bin/gcc' failed with exit code 1
----------------------------------------
ERROR: Failed building wheel for python-ldap
Failed to build python-ldap
ERROR: Could not build wheels for python-ldap, which is required to install pyproject.toml-based projects

I got it!
I had to install :
yum groupinstall "Development tools"
yum install openldap-devel
yum install python39-devel

pip3 fails to install imread - 'gcc' failed with exit status 1

when I do pip3 install imread I get the following error:
Collecting imread
Using cached imread-0.7.4.tar.gz (151 kB)
Requirement already satisfied: numpy in ./Library/Python/3.7/lib/python/site-packages (from imread) (1.17.4)
Building wheels for collected packages: imread
Building wheel for imread (setup.py) ... error
ERROR: Command errored out with exit status 1:
command: /Library/Frameworks/Python.framework/Versions/3.7/bin/python3.7 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/xt/0v5vcz0s2dg46z8x7j6c4yf80000gn/T/pip-install-yzh0j2tc/imread/setup.py'"'"'; __file__='"'"'/private/var/folders/xt/0v5vcz0s2dg46z8x7j6c4yf80000gn/T/pip-install-yzh0j2tc/imread/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /private/var/folders/xt/0v5vcz0s2dg46z8x7j6c4yf80000gn/T/pip-wheel-th30_vsf
cwd: /private/var/folders/xt/0v5vcz0s2dg46z8x7j6c4yf80000gn/T/pip-install-yzh0j2tc/imread/
Complete output (125 lines):
sh: pkg-config: command not found
running bdist_wheel
running build
running build_py
creating build
creating build/lib.macosx-10.9-x86_64-3.7
creating build/lib.macosx-10.9-x86_64-3.7/imread
copying imread/__init__.py -> build/lib.macosx-10.9-x86_64-3.7/imread
copying imread/imread_version.py -> build/lib.macosx-10.9-x86_64-3.7/imread
copying imread/ijrois.py -> build/lib.macosx-10.9-x86_64-3.7/imread
copying imread/special.py -> build/lib.macosx-10.9-x86_64-3.7/imread
copying imread/imread.py -> build/lib.macosx-10.9-x86_64-3.7/imread
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_tiff.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_rois.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_webp.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_jpeg.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/__init__.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_imread_from_blob.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_imread.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_xcf.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_formats.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_imsave.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_error.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_bad.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_png.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_bmp.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/good.png -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/bit1.png -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/1_webp_a.webp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/rois.zip -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/rgba.png -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/ghsystem_flame.jpg -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/star1.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/stack.tiff -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/T -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/0186-0099.roi -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/error.unknown -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/error.png -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/error.jpg -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/good -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/arange512_16bit.png -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/diag.xcf -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/palette_zero.png -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/py-installer-indexed.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/mono.tif -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/error.tif -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/error.webp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/TIFF
copying imread/tests/data/bad-files/TIFF/00r00.tiff -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/TIFF
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP/00r
copying imread/tests/data/bad-files/BMP/00r/00r05.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP/00r
copying imread/tests/data/bad-files/BMP/00r/00r04.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP/00r
copying imread/tests/data/bad-files/BMP/00r/00r06.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP/00r
copying imread/tests/data/bad-files/BMP/00r/00r03.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP/00r
copying imread/tests/data/bad-files/BMP/00r/00r02.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP/00r
copying imread/tests/data/bad-files/BMP/00r/00r00.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP/00r
copying imread/tests/data/bad-files/BMP/00r/00r01.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP/00r
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/00r
copying imread/tests/data/bad-files/LSM/00r/00r03.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/00r
copying imread/tests/data/bad-files/LSM/00r/00r02.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/00r
copying imread/tests/data/bad-files/LSM/00r/00r00.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/00r
copying imread/tests/data/bad-files/LSM/00r/00r01.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/00r
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/02r
copying imread/tests/data/bad-files/LSM/02r/02r00.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/02r
copying imread/tests/data/bad-files/LSM/02r/02r01.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/02r
copying imread/tests/data/bad-files/LSM/02r/02r02.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/02r
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/01r
copying imread/tests/data/bad-files/LSM/01r/01r01.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/01r
copying imread/tests/data/bad-files/LSM/01r/01r00.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/01r
copying imread/tests/data/bad-files/LSM/01r/01r02.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/01r
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/03w
copying imread/tests/data/bad-files/LSM/03w/03w03.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/03w
copying imread/tests/data/bad-files/LSM/03w/03w02.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/03w
copying imread/tests/data/bad-files/LSM/03w/03w00.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/03w
copying imread/tests/data/bad-files/LSM/03w/03w01.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/03w
running build_ext
building 'imread._imread' extension
creating build/temp.macosx-10.9-x86_64-3.7
creating build/temp.macosx-10.9-x86_64-3.7/imread
creating build/temp.macosx-10.9-x86_64-3.7/imread/lib
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION -DPY_ARRAY_UNIQUE_SYMBOL=MahotasImread_PyArray_API_Symbol -DIMREAD_EXCLUDE_WEBP=1 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I/Users/matinsaurralde/Library/Python/3.7/lib/python/site-packages/numpy/core/include -c imread/_imread.cpp -o build/temp.macosx-10.9-x86_64-3.7/imread/_imread.o -stdlib=libc++
In file included from imread/_imread.cpp:20:
imread/lib/base.h:138:46: warning: rvalue references are a C++11 extension [-Wc++11-extensions]
void push_back(std::unique_ptr<Image>&& p) { content.push_back(p.release()); }
^
1 warning generated.
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION -DPY_ARRAY_UNIQUE_SYMBOL=MahotasImread_PyArray_API_Symbol -DIMREAD_EXCLUDE_WEBP=1 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I/Users/matinsaurralde/Library/Python/3.7/lib/python/site-packages/numpy/core/include -c imread/lib/formats.cpp -o build/temp.macosx-10.9-x86_64-3.7/imread/lib/formats.o -stdlib=libc++
In file included from imread/lib/formats.cpp:4:
In file included from imread/lib/formats.h:6:
imread/lib/base.h:138:46: warning: rvalue references are a C++11 extension [-Wc++11-extensions]
void push_back(std::unique_ptr<Image>&& p) { content.push_back(p.release()); }
^
In file included from imread/lib/formats.cpp:9:
imread/lib/_tiff.h:41:37: warning: 'STKFormat::read_multi' hides overloaded virtual function [-Woverloaded-virtual]
std::unique_ptr<image_list> read_multi(byte_source* s, ImageFactory* f);
^
imread/lib/base.h:239:45: note: hidden overloaded virtual function 'ImageFormat::read_multi' declared here: different number of parameters (3 vs 2)
virtual std::unique_ptr<image_list> read_multi(byte_source* src, ImageFactory* factory, const options_map&) {
^
2 warnings generated.
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION -DPY_ARRAY_UNIQUE_SYMBOL=MahotasImread_PyArray_API_Symbol -DIMREAD_EXCLUDE_WEBP=1 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I/Users/matinsaurralde/Library/Python/3.7/lib/python/site-packages/numpy/core/include -c imread/lib/numpy.cpp -o build/temp.macosx-10.9-x86_64-3.7/imread/lib/numpy.o -stdlib=libc++
In file included from imread/lib/numpy.cpp:4:
In file included from imread/lib/numpy.h:8:
imread/lib/base.h:138:46: warning: rvalue references are a C++11 extension [-Wc++11-extensions]
void push_back(std::unique_ptr<Image>&& p) { content.push_back(p.release()); }
^
1 warning generated.
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION -DPY_ARRAY_UNIQUE_SYMBOL=MahotasImread_PyArray_API_Symbol -DIMREAD_EXCLUDE_WEBP=1 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I/Users/matinsaurralde/Library/Python/3.7/lib/python/site-packages/numpy/core/include -c imread/lib/_bmp.cpp -o build/temp.macosx-10.9-x86_64-3.7/imread/lib/_bmp.o -stdlib=libc++
In file included from imread/lib/_bmp.cpp:5:
imread/lib/base.h:138:46: warning: rvalue references are a C++11 extension [-Wc++11-extensions]
void push_back(std::unique_ptr<Image>&& p) { content.push_back(p.release()); }
^
imread/lib/_bmp.cpp:108:12: error: calling a private constructor of class 'std::__1::unique_ptr<Image, std::__1::default_delete<Image> >'
return output;
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/memory:2535:3: note: declared private here
unique_ptr(unique_ptr&);
^
1 warning and 1 error generated.
error: command 'gcc' failed with exit status 1
----------------------------------------
ERROR: Failed building wheel for imread
Running setup.py clean for imread
Failed to build imread
Installing collected packages: imread
Running setup.py install for imread ... error
ERROR: Command errored out with exit status 1:
command: /Library/Frameworks/Python.framework/Versions/3.7/bin/python3.7 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/xt/0v5vcz0s2dg46z8x7j6c4yf80000gn/T/pip-install-yzh0j2tc/imread/setup.py'"'"'; __file__='"'"'/private/var/folders/xt/0v5vcz0s2dg46z8x7j6c4yf80000gn/T/pip-install-yzh0j2tc/imread/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/xt/0v5vcz0s2dg46z8x7j6c4yf80000gn/T/pip-record-7oz3j6hu/install-record.txt --single-version-externally-managed --compile --install-headers /Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m/imread
cwd: /private/var/folders/xt/0v5vcz0s2dg46z8x7j6c4yf80000gn/T/pip-install-yzh0j2tc/imread/
Complete output (125 lines):
sh: pkg-config: command not found
running install
running build
running build_py
creating build
creating build/lib.macosx-10.9-x86_64-3.7
creating build/lib.macosx-10.9-x86_64-3.7/imread
copying imread/__init__.py -> build/lib.macosx-10.9-x86_64-3.7/imread
copying imread/imread_version.py -> build/lib.macosx-10.9-x86_64-3.7/imread
copying imread/ijrois.py -> build/lib.macosx-10.9-x86_64-3.7/imread
copying imread/special.py -> build/lib.macosx-10.9-x86_64-3.7/imread
copying imread/imread.py -> build/lib.macosx-10.9-x86_64-3.7/imread
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_tiff.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_rois.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_webp.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_jpeg.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/__init__.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_imread_from_blob.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_imread.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_xcf.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_formats.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_imsave.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_error.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_bad.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_png.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
copying imread/tests/test_bmp.py -> build/lib.macosx-10.9-x86_64-3.7/imread/tests
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/good.png -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/bit1.png -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/1_webp_a.webp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/rois.zip -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/rgba.png -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/ghsystem_flame.jpg -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/star1.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/stack.tiff -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/T -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/0186-0099.roi -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/error.unknown -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/error.png -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/error.jpg -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/good -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/arange512_16bit.png -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/diag.xcf -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/palette_zero.png -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/py-installer-indexed.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/mono.tif -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/error.tif -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
copying imread/tests/data/error.webp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/TIFF
copying imread/tests/data/bad-files/TIFF/00r00.tiff -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/TIFF
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP/00r
copying imread/tests/data/bad-files/BMP/00r/00r05.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP/00r
copying imread/tests/data/bad-files/BMP/00r/00r04.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP/00r
copying imread/tests/data/bad-files/BMP/00r/00r06.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP/00r
copying imread/tests/data/bad-files/BMP/00r/00r03.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP/00r
copying imread/tests/data/bad-files/BMP/00r/00r02.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP/00r
copying imread/tests/data/bad-files/BMP/00r/00r00.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP/00r
copying imread/tests/data/bad-files/BMP/00r/00r01.bmp -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/BMP/00r
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/00r
copying imread/tests/data/bad-files/LSM/00r/00r03.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/00r
copying imread/tests/data/bad-files/LSM/00r/00r02.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/00r
copying imread/tests/data/bad-files/LSM/00r/00r00.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/00r
copying imread/tests/data/bad-files/LSM/00r/00r01.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/00r
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/02r
copying imread/tests/data/bad-files/LSM/02r/02r00.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/02r
copying imread/tests/data/bad-files/LSM/02r/02r01.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/02r
copying imread/tests/data/bad-files/LSM/02r/02r02.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/02r
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/01r
copying imread/tests/data/bad-files/LSM/01r/01r01.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/01r
copying imread/tests/data/bad-files/LSM/01r/01r00.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/01r
copying imread/tests/data/bad-files/LSM/01r/01r02.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/01r
creating build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/03w
copying imread/tests/data/bad-files/LSM/03w/03w03.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/03w
copying imread/tests/data/bad-files/LSM/03w/03w02.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/03w
copying imread/tests/data/bad-files/LSM/03w/03w00.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/03w
copying imread/tests/data/bad-files/LSM/03w/03w01.lsm -> build/lib.macosx-10.9-x86_64-3.7/imread/tests/data/bad-files/LSM/03w
running build_ext
building 'imread._imread' extension
creating build/temp.macosx-10.9-x86_64-3.7
creating build/temp.macosx-10.9-x86_64-3.7/imread
creating build/temp.macosx-10.9-x86_64-3.7/imread/lib
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION -DPY_ARRAY_UNIQUE_SYMBOL=MahotasImread_PyArray_API_Symbol -DIMREAD_EXCLUDE_WEBP=1 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I/Users/matinsaurralde/Library/Python/3.7/lib/python/site-packages/numpy/core/include -c imread/_imread.cpp -o build/temp.macosx-10.9-x86_64-3.7/imread/_imread.o -stdlib=libc++
In file included from imread/_imread.cpp:20:
imread/lib/base.h:138:46: warning: rvalue references are a C++11 extension [-Wc++11-extensions]
void push_back(std::unique_ptr<Image>&& p) { content.push_back(p.release()); }
^
1 warning generated.
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION -DPY_ARRAY_UNIQUE_SYMBOL=MahotasImread_PyArray_API_Symbol -DIMREAD_EXCLUDE_WEBP=1 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I/Users/matinsaurralde/Library/Python/3.7/lib/python/site-packages/numpy/core/include -c imread/lib/formats.cpp -o build/temp.macosx-10.9-x86_64-3.7/imread/lib/formats.o -stdlib=libc++
In file included from imread/lib/formats.cpp:4:
In file included from imread/lib/formats.h:6:
imread/lib/base.h:138:46: warning: rvalue references are a C++11 extension [-Wc++11-extensions]
void push_back(std::unique_ptr<Image>&& p) { content.push_back(p.release()); }
^
In file included from imread/lib/formats.cpp:9:
imread/lib/_tiff.h:41:37: warning: 'STKFormat::read_multi' hides overloaded virtual function [-Woverloaded-virtual]
std::unique_ptr<image_list> read_multi(byte_source* s, ImageFactory* f);
^
imread/lib/base.h:239:45: note: hidden overloaded virtual function 'ImageFormat::read_multi' declared here: different number of parameters (3 vs 2)
virtual std::unique_ptr<image_list> read_multi(byte_source* src, ImageFactory* factory, const options_map&) {
^
2 warnings generated.
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION -DPY_ARRAY_UNIQUE_SYMBOL=MahotasImread_PyArray_API_Symbol -DIMREAD_EXCLUDE_WEBP=1 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I/Users/matinsaurralde/Library/Python/3.7/lib/python/site-packages/numpy/core/include -c imread/lib/numpy.cpp -o build/temp.macosx-10.9-x86_64-3.7/imread/lib/numpy.o -stdlib=libc++
In file included from imread/lib/numpy.cpp:4:
In file included from imread/lib/numpy.h:8:
imread/lib/base.h:138:46: warning: rvalue references are a C++11 extension [-Wc++11-extensions]
void push_back(std::unique_ptr<Image>&& p) { content.push_back(p.release()); }
^
1 warning generated.
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -arch x86_64 -g -DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION -DPY_ARRAY_UNIQUE_SYMBOL=MahotasImread_PyArray_API_Symbol -DIMREAD_EXCLUDE_WEBP=1 -I/usr/local/include -I/Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m -I/Users/matinsaurralde/Library/Python/3.7/lib/python/site-packages/numpy/core/include -c imread/lib/_bmp.cpp -o build/temp.macosx-10.9-x86_64-3.7/imread/lib/_bmp.o -stdlib=libc++
In file included from imread/lib/_bmp.cpp:5:
imread/lib/base.h:138:46: warning: rvalue references are a C++11 extension [-Wc++11-extensions]
void push_back(std::unique_ptr<Image>&& p) { content.push_back(p.release()); }
^
imread/lib/_bmp.cpp:108:12: error: calling a private constructor of class 'std::__1::unique_ptr<Image, std::__1::default_delete<Image> >'
return output;
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/memory:2535:3: note: declared private here
unique_ptr(unique_ptr&);
^
1 warning and 1 error generated.
error: command 'gcc' failed with exit status 1
----------------------------------------
ERROR: Command errored out with exit status 1: /Library/Frameworks/Python.framework/Versions/3.7/bin/python3.7 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/xt/0v5vcz0s2dg46z8x7j6c4yf80000gn/T/pip-install-yzh0j2tc/imread/setup.py'"'"'; __file__='"'"'/private/var/folders/xt/0v5vcz0s2dg46z8x7j6c4yf80000gn/T/pip-install-yzh0j2tc/imread/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/xt/0v5vcz0s2dg46z8x7j6c4yf80000gn/T/pip-record-7oz3j6hu/install-record.txt --single-version-externally-managed --compile --install-headers /Library/Frameworks/Python.framework/Versions/3.7/include/python3.7m/imread Check the logs for full command output.
I already tried with pip3 install imread --no-cache-dir as I read somewhere else but didn't work at all. I already did brew install gcc but it didn't work out. I deleted and reinstalled the command line tools through terminal with xcode-select --install but still doesn't work.
I can read in the first lines that it says "Requirement already satisfied" but I checked and imread is definitely not installed.
Environment:
macOS Catalina 10.15.4
python 3.7.7 (I tried installing it in python 2.7 using just pip but
still doesn't work).
pip version = pip 20.1 from /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip (python 3.7)
if anyone can find the solution I would be very grateful! I've been looking for hours for the solution and I can't find it!

It says quite clearly:
sh: pkg-config: command not found
So you have to install pkg-config and try again.

You need to install pkg-config package. For MacOSX you may find it either in Brew or in other software collections like thus sourceforge repository
The second (and perhaps the actual) error is the error with gcc. Considering the line
imread/lib/base.h:138:46: warning: rvalue references are a C++11 extension [-Wc++11-extensions]
void push_back(std::unique_ptr<Image>&& p) { content.push_back(p.release()); }
I expect your gcc being quite old. What is its actual version? Try to run gcc -v to find out.
Update:
As a non-Mac user I would go with gcc :-) . To install gcc-9+ from brew, use brew install gcc command. Then check that gcc and g++ are actually installed:
g++-9 --version
I would also check the C++ standard library as suggested in https://stackoverflow.com/a/17940219/3159253 :
`gcc-9 -print-prog-name=cc1plus` -v
Make sure the paths point to relatively recent version of C++ library, not to 4.2.1 as in your comment.
You should then explicitly use it when running pip:
CC=gcc-9 pip install imread

Install lxml on Centos 7 - error: command 'gcc' failed with exit status 4

I'm using python 3.4 in a virtual environment:
(af)[root#domain backend]# pip --version
pip 7.1.0 from /home/af/af-stage/backend/.ves/af/lib/python3.4/site-packages (python 3.4)
Installation of lxml failed "error: command 'gcc' failed with exit status 4":
(af)[root#domain backend]# pip install lxml
You are using pip version 7.1.0, however version 7.1.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Collecting lxml
Using cached lxml-3.5.0.tar.gz
Building wheels for collected packages: lxml
Running setup.py bdist_wheel for lxml
Complete output from command /home/af/af-stage/backend/.ves/af/bin/python3.4 -c "import setuptools;__file__='/tmp/pip-build-tlogtyk2/lxml/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" bdist_wheel -d /tmp/tmpod9hcw0ypip-wheel-:
Building lxml version 3.5.0.
Building without Cython.
Using build configuration of libxslt 1.1.28
Building against libxml2/libxslt in the following directory: /usr/lib64
running bdist_wheel
running build
running build_py
creating build
creating build/lib.linux-x86_64-3.4
creating build/lib.linux-x86_64-3.4/lxml
copying src/lxml/usedoctest.py -> build/lib.linux-x86_64-3.4/lxml
copying src/lxml/__init__.py -> build/lib.linux-x86_64-3.4/lxml
copying src/lxml/builder.py -> build/lib.linux-x86_64-3.4/lxml
copying src/lxml/sax.py -> build/lib.linux-x86_64-3.4/lxml
copying src/lxml/doctestcompare.py -> build/lib.linux-x86_64-3.4/lxml
copying src/lxml/_elementpath.py -> build/lib.linux-x86_64-3.4/lxml
copying src/lxml/cssselect.py -> build/lib.linux-x86_64-3.4/lxml
copying src/lxml/ElementInclude.py -> build/lib.linux-x86_64-3.4/lxml
copying src/lxml/pyclasslookup.py -> build/lib.linux-x86_64-3.4/lxml
creating build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/__init__.py -> build/lib.linux-x86_64-3.4/lxml/includes
creating build/lib.linux-x86_64-3.4/lxml/html
copying src/lxml/html/usedoctest.py -> build/lib.linux-x86_64-3.4/lxml/html
copying src/lxml/html/html5parser.py -> build/lib.linux-x86_64-3.4/lxml/html
copying src/lxml/html/__init__.py -> build/lib.linux-x86_64-3.4/lxml/html
copying src/lxml/html/_html5builder.py -> build/lib.linux-x86_64-3.4/lxml/html
copying src/lxml/html/builder.py -> build/lib.linux-x86_64-3.4/lxml/html
copying src/lxml/html/_setmixin.py -> build/lib.linux-x86_64-3.4/lxml/html
copying src/lxml/html/_diffcommand.py -> build/lib.linux-x86_64-3.4/lxml/html
copying src/lxml/html/ElementSoup.py -> build/lib.linux-x86_64-3.4/lxml/html
copying src/lxml/html/formfill.py -> build/lib.linux-x86_64-3.4/lxml/html
copying src/lxml/html/soupparser.py -> build/lib.linux-x86_64-3.4/lxml/html
copying src/lxml/html/diff.py -> build/lib.linux-x86_64-3.4/lxml/html
copying src/lxml/html/defs.py -> build/lib.linux-x86_64-3.4/lxml/html
copying src/lxml/html/clean.py -> build/lib.linux-x86_64-3.4/lxml/html
creating build/lib.linux-x86_64-3.4/lxml/isoschematron
copying src/lxml/isoschematron/__init__.py -> build/lib.linux-x86_64-3.4/lxml/isoschematron
copying src/lxml/lxml.etree.h -> build/lib.linux-x86_64-3.4/lxml
copying src/lxml/lxml.etree_api.h -> build/lib.linux-x86_64-3.4/lxml
copying src/lxml/includes/etreepublic.pxd -> build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/uri.pxd -> build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/xmlschema.pxd -> build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/config.pxd -> build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/xmlerror.pxd -> build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/xslt.pxd -> build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/tree.pxd -> build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/xpath.pxd -> build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/relaxng.pxd -> build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/htmlparser.pxd -> build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/xinclude.pxd -> build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/xmlparser.pxd -> build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/schematron.pxd -> build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/dtdvalid.pxd -> build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/c14n.pxd -> build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/lxml-version.h -> build/lib.linux-x86_64-3.4/lxml/includes
copying src/lxml/includes/etree_defs.h -> build/lib.linux-x86_64-3.4/lxml/includes
creating build/lib.linux-x86_64-3.4/lxml/isoschematron/resources
creating build/lib.linux-x86_64-3.4/lxml/isoschematron/resources/rng
copying src/lxml/isoschematron/resources/rng/iso-schematron.rng -> build/lib.linux-x86_64-3.4/lxml/isoschematron/resources/rng
creating build/lib.linux-x86_64-3.4/lxml/isoschematron/resources/xsl
copying src/lxml/isoschematron/resources/xsl/RNG2Schtrn.xsl -> build/lib.linux-x86_64-3.4/lxml/isoschematron/resources/xsl
copying src/lxml/isoschematron/resources/xsl/XSD2Schtrn.xsl -> build/lib.linux-x86_64-3.4/lxml/isoschematron/resources/xsl
creating build/lib.linux-x86_64-3.4/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_64-3.4/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_dsdl_include.xsl -> build/lib.linux-x86_64-3.4/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_abstract_expand.xsl -> build/lib.linux-x86_64-3.4/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_schematron_message.xsl -> build/lib.linux-x86_64-3.4/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_64-3.4/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/readme.txt -> build/lib.linux-x86_64-3.4/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
running build_ext
building 'lxml.etree' extension
creating build/temp.linux-x86_64-3.4
creating build/temp.linux-x86_64-3.4/src
creating build/temp.linux-x86_64-3.4/src/lxml
gcc -pthread -Wno-unused-result -DDYNAMIC_ANNOTATIONS_ENABLED=1 -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -fPIC -I/usr/include/libxml2 -Isrc/lxml/includes -I/usr/include/python3.4m -c src/lxml/lxml.etree.c -o build/temp.linux-x86_64-3.4/src/lxml/lxml.etree.o -w
{standard input}: Assembler messages:
{standard input}:1531298: Error: unknown pseudo-op: `.uleb'
gcc: internal compiler error: Killed (program cc1)
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugzilla.redhat.com/bugzilla> for instructions.
Compile failed: command 'gcc' failed with exit status 4
creating tmp
cc -I/usr/include/libxml2 -I/usr/include/libxml2 -c /tmp/xmlXPathInitpm92p5c8.c -o tmp/xmlXPathInitpm92p5c8.o
cc tmp/xmlXPathInitpm92p5c8.o -L/usr/lib64 -lxml2 -o a.out
error: command 'gcc' failed with exit status 4
----------------------------------------
Failed building wheel for lxml
Failed to build lxml
Installing collected packages: lxml
Running setup.py install for lxml
Complete output from command /home/af/af-stage/backend/.ves/af/bin/python3.4 -c "import setuptools, tokenize;__file__='/tmp/pip-build-tlogtyk2/lxml/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-99hwjy1o-record/install-record.txt --single-version-externally-managed --compile --install-headers /home/af/af-stage/backend/.ves/af/include/site/python3.4/lxml:
Building lxml version 3.5.0.
Building without Cython.
Using build configuration of libxslt 1.1.28
Building against libxml2/libxslt in the following directory: /usr/lib64
running install
running build
running build_py
copying src/lxml/includes/lxml-version.h -> build/lib.linux-x86_64-3.4/lxml/includes
running build_ext
building 'lxml.etree' extension
gcc -pthread -Wno-unused-result -DDYNAMIC_ANNOTATIONS_ENABLED=1 -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -fPIC -I/usr/include/libxml2 -Isrc/lxml/includes -I/usr/include/python3.4m -c src/lxml/lxml.etree.c -o build/temp.linux-x86_64-3.4/src/lxml/lxml.etree.o -w
{standard input}: Assembler messages:
{standard input}:1320351: Error: unknown pseudo-op: `.uleb1'
gcc: internal compiler error: Killed (program cc1)
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugzilla.redhat.com/bugzilla> for instructions.
Compile failed: command 'gcc' failed with exit status 4
cc -I/usr/include/libxml2 -I/usr/include/libxml2 -c /tmp/xmlXPathInit3tj66iu0.c -o tmp/xmlXPathInit3tj66iu0.o
cc tmp/xmlXPathInit3tj66iu0.o -L/usr/lib64 -lxml2 -o a.out
error: command 'gcc' failed with exit status 4
----------------------------------------
Command "/home/af/af-stage/backend/.ves/af/bin/python3.4 -c "import setuptools, tokenize;__file__='/tmp/pip-build-tlogtyk2/lxml/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-99hwjy1o-record/install-record.txt --single-version-externally-managed --compile --install-headers /home/af/af-stage/backend/.ves/af/include/site/python3.4/lxml" failed with error code 1 in /tmp/pip-build-tlogtyk2/lxml
Notes:
I've already done yum install libxslt-devel libxml2-devel

You just need to use yum install python-lxml.
Of course, lxml module depend on libxml2 libxslt libxml2-devel libxslt-devel.

This worked for me: yum install -y libxml2 libxml2-devel libxslt libxslt-devel

It works after installing:
libxml++-2.30.0-1.el6.i686
libsigc++20-devel-2.2.4.2-1.el6.i686
libxml2-static-2.7.6-21.el6_8.1.i686
libxml++-devel-2.30.0-1.el6.i686
libxslt-python-1.1.26-2.el6_3.1.i686
gccxml-0.9.0-0.27.20150423.git3afa8ba.el6.i686

I updated my lxml version from 3.7.0 to the latest one 4.1.1 and that works for me.

lxml: error: command 'x86_64-linux-gnu-gcc' failed with exit status 1

I've seen some posts on lxml installing problems, but none of the answers I found was of any help. Many said to install python-dev, libxml2 and libxslt to solve the problem. They are already installed, but I still get the following outcome (keep in mind that I'm installing everything locally using virtualenv):
(scrapers)~$ pip install lxml
Downloading/unpacking lxml
Downloading lxml-3.5.0.tar.gz (3.8MB): 3.8MB downloaded
Running setup.py (path:/home/pigna/scrapers/build/lxml/setup.py) egg_info for package lxml
Building lxml version 3.5.0.
Building without Cython.
Using build configuration of libxslt 1.1.28
warning: no previously-included files found matching '*.py'
Installing collected packages: lxml
Running setup.py install for lxml
Building lxml version 3.5.0.
Building without Cython.
Using build configuration of libxslt 1.1.28
building 'lxml.etree' extension
x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/libxml2 -Isrc/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 -w
x86_64-linux-gnu-gcc -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions -Wl,-z,relro -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -D_FORTIFY_SOURCE=2 -g -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security build/temp.linux-x86_64-2.7/src/lxml/lxml.etree.o -lxslt -lexslt -lxml2 -lz -lm -o build/lib.linux-x86_64-2.7/lxml/etree.so
/usr/bin/ld: cannot find -lz
collect2: error: ld returned 1 exit status
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
Complete output from command /home/pigna/scrapers/bin/python -c "import setuptools, tokenize;__file__='/home/pigna/scrapers/build/lxml/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-ikEzzn-record/install-record.txt --single-version-externally-managed --compile --install-headers /home/pigna/scrapers/include/site/python2.7:
Building lxml version 3.5.0.
Building without Cython.
Using build configuration of libxslt 1.1.28
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/usedoctest.py -> build/lib.linux-x86_64-2.7/lxml
copying src/lxml/builder.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/cssselect.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/__init__.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/doctestcompare.py -> build/lib.linux-x86_64-2.7/lxml
copying src/lxml/_elementpath.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/usedoctest.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
copying src/lxml/html/_setmixin.py -> 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/formfill.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/_html5builder.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/_diffcommand.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/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/clean.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/config.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/dtdvalid.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/tree.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/c14n.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/uri.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/xmlerror.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/xslt.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/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/RNG2Schtrn.xsl -> 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
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_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/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/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
x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/libxml2 -Isrc/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 -w
x86_64-linux-gnu-gcc -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions -Wl,-z,relro -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -D_FORTIFY_SOURCE=2 -g -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security build/temp.linux-x86_64-2.7/src/lxml/lxml.etree.o -lxslt -lexslt -lxml2 -lz -lm -o build/lib.linux-x86_64-2.7/lxml/etree.so
/usr/bin/ld: cannot find -lz
collect2: error: ld returned 1 exit status
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
----------------------------------------
Cleaning up...
Command /home/pigna/scrapers/bin/python -c "import setuptools, tokenize;__file__='/home/pigna/scrapers/build/lxml/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-ikEzzn-record/install-record.txt --single-version-externally-managed --compile --install-headers /home/pigna/scrapers/include/site/python2.7 failed with error code 1 in /home/pigna/scrapers/build/lxml
Storing debug log for failure in /home/pigna/.pip/pip.log
What does warning: no previously-included files found matching '*.py' mean?
/usr/bin/ld: cannot find -lz what is -lz? How to install it?

The relevant error is this:
/usr/bin/ld: cannot find -lz
...which indicates that the linker couldn't find libz.so, which means you don't have zlib installed in a location in your library search path.
Install zlib; the method for doing so depends on your operating system, so there's no generic answer. It might be something like:
sudo apt-get install zlib-dev # on a Debian derivative
sudo apt-get install zlib1g-dev # on Ubuntu 14.04 (see below)
sudo yum install zlib-devel # on a Red Hat derivative
sudo port install zlib # on a ports-based system
sudo pacman -S zlib # on Arch Linux
or any number of other things as appropriate.
Assuming you want to find the appropriate package name for a given version of Ubuntu, one can search for the package containing libz.so on packages.ubuntu.com; the linked results are for Trusty.

ImportError: No module named lxml.html when creating scrapy project

I'm on OS 10.9.5 and get the following error when I try to create a scrapy project:
Traceback (most recent call last):
File "/usr/local/bin/scrapy", line 7, in <module>
from scrapy.cmdline import execute
File "/Library/Python/2.7/site-packages/scrapy/__init__.py", line 56, in <module>
from scrapy.spider import Spider
File "/Library/Python/2.7/site-packages/scrapy/spider.py", line 7, in <module>
from scrapy.http import Request
File "/Library/Python/2.7/site-packages/scrapy/http/__init__.py", line 11, in <module>
from scrapy.http.request.form import FormRequest
File "/Library/Python/2.7/site-packages/scrapy/http/request/form.py", line 9, in <module>
import lxml.html
ImportError: No module named lxml.html
I first tried to uninstall and then reinstall scrapy using pip. I'm not sure whether the problem is actually that something went wrong during the installation of scrapy. I get the following output when installing scrapy:
Downloading/unpacking scrapy
Downloading Scrapy-0.24.4-py2-none-any.whl (444kB): 444kB downloaded
Requirement already satisfied (use --upgrade to upgrade): pyOpenSSL in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from scrapy)
Requirement already satisfied (use --upgrade to upgrade): six>=1.5.2 in /Library/Python/2.7/site-packages (from scrapy)
Requirement already satisfied (use --upgrade to upgrade): queuelib in /Library/Python/2.7/site-packages (from scrapy)
Downloading/unpacking lxml (from scrapy)
Downloading lxml-3.4.0.tar.gz (3.5MB): 3.5MB downloaded
Running setup.py (path:/private/tmp/pip_build_root/lxml/setup.py) egg_info for package lxml
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'bugtrack_url'
warnings.warn(msg)
Building lxml version 3.4.0.
Building without Cython.
Using build configuration of libxslt 1.1.28
warning: no previously-included files found matching '*.py'
Requirement already satisfied (use --upgrade to upgrade): w3lib>=1.8.0 in /Library/Python/2.7/site-packages (from scrapy)
Downloading/unpacking cssselect>=0.9 (from scrapy)
Downloading cssselect-0.9.1.tar.gz
Running setup.py (path:/private/tmp/pip_build_root/cssselect/setup.py) egg_info for package cssselect
no previously-included directories found matching 'docs/_build'
Requirement already satisfied (use --upgrade to upgrade): Twisted>=10.0.0 in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from scrapy)
Requirement already satisfied (use --upgrade to upgrade): zope.interface in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from Twisted>=10.0.0->scrapy)
Requirement already satisfied (use --upgrade to upgrade): setuptools in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from zope.interface->Twisted>=10.0.0->scrapy)
Installing collected packages: scrapy, lxml, cssselect
Running setup.py install for lxml
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'bugtrack_url'
warnings.warn(msg)
Building lxml version 3.4.0.
Building without Cython.
Using build configuration of libxslt 1.1.28
building 'lxml.etree' extension
cc -fno-strict-aliasing -fno-common -dynamic -arch x86_64 -arch i386 -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch x86_64 -arch i386 -pipe -I/usr/include/libxml2 -I/private/tmp/pip_build_root/lxml/src/lxml/includes -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c src/lxml/lxml.etree.c -o build/temp.macosx-10.9-intel-2.7/src/lxml/lxml.etree.o -w -flat_namespace
You have not agreed to the Xcode license agreements, please run 'xcodebuild -license' (for user-level acceptance) or 'sudo xcodebuild -license' (for system-wide acceptance) from within a Terminal window to review and agree to the Xcode license agreements.
error: command 'cc' failed with exit status 69
Complete output from command /usr/bin/python -c "import setuptools, tokenize;__file__='/private/tmp/pip_build_root/lxml/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-3TNhV_-record/install-record.txt --single-version-externally-managed --compile:
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'bugtrack_url'
warnings.warn(msg)
Building lxml version 3.4.0.
Building without Cython.
Using build configuration of libxslt 1.1.28
running install
running build
running build_py
creating build
creating build/lib.macosx-10.9-intel-2.7
creating build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/__init__.py -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/_elementpath.py -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/builder.py -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/cssselect.py -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/doctestcompare.py -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/ElementInclude.py -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/pyclasslookup.py -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/sax.py -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/usedoctest.py -> build/lib.macosx-10.9-intel-2.7/lxml
creating build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/__init__.py -> build/lib.macosx-10.9-intel-2.7/lxml/includes
creating build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/__init__.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/_diffcommand.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/_html5builder.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/_setmixin.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/builder.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/clean.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/defs.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/diff.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/ElementSoup.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/formfill.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/html5parser.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/soupparser.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/usedoctest.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
creating build/lib.macosx-10.9-intel-2.7/lxml/isoschematron
copying src/lxml/isoschematron/__init__.py -> build/lib.macosx-10.9-intel-2.7/lxml/isoschematron
copying src/lxml/lxml.etree.h -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/lxml.etree_api.h -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/includes/c14n.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/config.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/dtdvalid.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/etreepublic.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/htmlparser.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/relaxng.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/schematron.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/tree.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/uri.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/xinclude.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/xmlerror.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/xmlparser.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/xmlschema.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/xpath.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/xslt.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/etree_defs.h -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/lxml-version.h -> build/lib.macosx-10.9-intel-2.7/lxml/includes
creating build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources
creating build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/rng
copying src/lxml/isoschematron/resources/rng/iso-schematron.rng -> build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/rng
creating build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/xsl
copying src/lxml/isoschematron/resources/xsl/RNG2Schtrn.xsl -> build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/xsl
copying src/lxml/isoschematron/resources/xsl/XSD2Schtrn.xsl -> build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/xsl
creating build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_abstract_expand.xsl -> build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_dsdl_include.xsl -> build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_schematron_message.xsl -> build/lib.macosx-10.9-intel-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.macosx-10.9-intel-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.macosx-10.9-intel-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/readme.txt -> build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
running build_ext
building 'lxml.etree' extension
creating build/temp.macosx-10.9-intel-2.7
creating build/temp.macosx-10.9-intel-2.7/src
creating build/temp.macosx-10.9-intel-2.7/src/lxml
cc -fno-strict-aliasing -fno-common -dynamic -arch x86_64 -arch i386 -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch x86_64 -arch i386 -pipe -I/usr/include/libxml2 -I/private/tmp/pip_build_root/lxml/src/lxml/includes -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c src/lxml/lxml.etree.c -o build/temp.macosx-10.9-intel-2.7/src/lxml/lxml.etree.o -w -flat_namespace
You have not agreed to the Xcode license agreements, please run 'xcodebuild -license' (for user-level acceptance) or 'sudo xcodebuild -license' (for system-wide acceptance) from within a Terminal window to review and agree to the Xcode license agreements.
error: command 'cc' failed with exit status 69
----------------------------------------
Cleaning up...
Command /usr/bin/python -c "import setuptools, tokenize;__file__='/private/tmp/pip_build_root/lxml/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-3TNhV_-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /private/tmp/pip_build_root/lxml
I also tried to install lxml seperately and get the following output:
Downloading/unpacking lxml
Downloading lxml-3.4.0.tar.gz (3.5MB): 3.5MB downloaded
Running setup.py (path:/private/tmp/pip_build_root/lxml/setup.py) egg_info for package lxml
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'bugtrack_url'
warnings.warn(msg)
Building lxml version 3.4.0.
Building without Cython.
Using build configuration of libxslt 1.1.28
warning: no previously-included files found matching '*.py'
Installing collected packages: lxml
Running setup.py install for lxml
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'bugtrack_url'
warnings.warn(msg)
Building lxml version 3.4.0.
Building without Cython.
Using build configuration of libxslt 1.1.28
building 'lxml.etree' extension
cc -fno-strict-aliasing -fno-common -dynamic -arch x86_64 -arch i386 -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch x86_64 -arch i386 -pipe -I/usr/include/libxml2 -I/private/tmp/pip_build_root/lxml/src/lxml/includes -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c src/lxml/lxml.etree.c -o build/temp.macosx-10.9-intel-2.7/src/lxml/lxml.etree.o -w -flat_namespace
You have not agreed to the Xcode license agreements, please run 'xcodebuild -license' (for user-level acceptance) or 'sudo xcodebuild -license' (for system-wide acceptance) from within a Terminal window to review and agree to the Xcode license agreements.
error: command 'cc' failed with exit status 69
Complete output from command /usr/bin/python -c "import setuptools, tokenize;__file__='/private/tmp/pip_build_root/lxml/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-l6wwGK-record/install-record.txt --single-version-externally-managed --compile:
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'bugtrack_url'
warnings.warn(msg)
Building lxml version 3.4.0.
Building without Cython.
Using build configuration of libxslt 1.1.28
running install
running build
running build_py
creating build
creating build/lib.macosx-10.9-intel-2.7
creating build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/__init__.py -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/_elementpath.py -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/builder.py -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/cssselect.py -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/doctestcompare.py -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/ElementInclude.py -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/pyclasslookup.py -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/sax.py -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/usedoctest.py -> build/lib.macosx-10.9-intel-2.7/lxml
creating build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/__init__.py -> build/lib.macosx-10.9-intel-2.7/lxml/includes
creating build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/__init__.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/_diffcommand.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/_html5builder.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/_setmixin.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/builder.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/clean.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/defs.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/diff.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/ElementSoup.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/formfill.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/html5parser.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/soupparser.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
copying src/lxml/html/usedoctest.py -> build/lib.macosx-10.9-intel-2.7/lxml/html
creating build/lib.macosx-10.9-intel-2.7/lxml/isoschematron
copying src/lxml/isoschematron/__init__.py -> build/lib.macosx-10.9-intel-2.7/lxml/isoschematron
copying src/lxml/lxml.etree.h -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/lxml.etree_api.h -> build/lib.macosx-10.9-intel-2.7/lxml
copying src/lxml/includes/c14n.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/config.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/dtdvalid.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/etreepublic.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/htmlparser.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/relaxng.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/schematron.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/tree.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/uri.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/xinclude.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/xmlerror.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/xmlparser.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/xmlschema.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/xpath.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/xslt.pxd -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/etree_defs.h -> build/lib.macosx-10.9-intel-2.7/lxml/includes
copying src/lxml/includes/lxml-version.h -> build/lib.macosx-10.9-intel-2.7/lxml/includes
creating build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources
creating build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/rng
copying src/lxml/isoschematron/resources/rng/iso-schematron.rng -> build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/rng
creating build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/xsl
copying src/lxml/isoschematron/resources/xsl/RNG2Schtrn.xsl -> build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/xsl
copying src/lxml/isoschematron/resources/xsl/XSD2Schtrn.xsl -> build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/xsl
creating build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_abstract_expand.xsl -> build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_dsdl_include.xsl -> build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_schematron_message.xsl -> build/lib.macosx-10.9-intel-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.macosx-10.9-intel-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.macosx-10.9-intel-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/readme.txt -> build/lib.macosx-10.9-intel-2.7/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
running build_ext
building 'lxml.etree' extension
creating build/temp.macosx-10.9-intel-2.7
creating build/temp.macosx-10.9-intel-2.7/src
creating build/temp.macosx-10.9-intel-2.7/src/lxml
cc -fno-strict-aliasing -fno-common -dynamic -arch x86_64 -arch i386 -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch x86_64 -arch i386 -pipe -I/usr/include/libxml2 -I/private/tmp/pip_build_root/lxml/src/lxml/includes -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c src/lxml/lxml.etree.c -o build/temp.macosx-10.9-intel-2.7/src/lxml/lxml.etree.o -w -flat_namespace
You have not agreed to the Xcode license agreements, please run 'xcodebuild -license' (for user-level acceptance) or 'sudo xcodebuild -license' (for system-wide acceptance) from within a Terminal window to review and agree to the Xcode license agreements.
error: command 'cc' failed with exit status 69
----------------------------------------
Cleaning up...
Command /usr/bin/python -c "import setuptools, tokenize;__file__='/private/tmp/pip_build_root/lxml/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-l6wwGK-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /private/tmp/pip_build_root/lxml
Can anybody please help?

The problem was this part:
You have not agreed to the Xcode license agreements, please run 'xcodebuild -license' (for user-level acceptance) or 'sudo xcodebuild -license' (for system-wide acceptance) from within a Terminal window to review and agree to the Xcode license agreements.
Running sudo xcodebuild -license and reinstalling scrapy solved the problem.

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