[rhelv6-list] No package libffi-devel available in RHEL 6.6
Horst Severini
hs at nhn.ou.edu
Tue Dec 8 13:55:20 UTC 2015
Hi Kaushal,
libffi-devel is in the rhel-x86_64-server-optional-6 channel/repo:
----
[root at ouhep01 hs]# yum list libffi\*
Loaded plugins: dellsysid, priorities, product-id, refresh-packagekit,
: rhnplugin, security, subscription-manager
This system is receiving updates from RHN Classic or RHN Satellite.
12 packages excluded due to repository priority protections
Installed Packages
libffi.x86_64 3.0.5-3.2.el6 @anaconda-RedHatEnterpriseLinux-201311111358.x86_64/6.5
Available Packages
libffi.i686 3.0.5-3.2.el6 Rocks-6.1
libffi-debuginfo.i686 3.0.5-3.2.el6 rhel-x86_64-server-6-debuginfo
libffi-debuginfo.x86_64 3.0.5-3.2.el6 rhel-x86_64-server-6-debuginfo
libffi-devel.i686 3.0.5-3.2.el6 rhel-x86_64-server-optional-6
libffi-devel.x86_64 3.0.5-3.2.el6 rhel-x86_64-server-optional-6
----
So you need to make sure that you are signed up for that channel,
and then you should be able to see it.
Cheers,
Horst
Kaushal Shriyan <kaushalshriyan at gmail.com> wrote:
> Hi,
>
> I am referring to
> https://letsencrypt.readthedocs.org/en/latest/using.html#third-party-plugins
>
> and i am getting *No package libffi-devel available*. Please find below the
> console output. Any help will be highly appreciable.
>
> Please do let me know if you need any additonal information.
>
>
> [root at ip-172-31-2-103 letsencrypt]#cat /etc/redhat-release
> Red Hat Enterprise Linux Server release 6.6 (Santiago)
> [root at ip-172-31-2-103 letsencrypt]#rpm -qa | egrep epel
> epel-release-6-8.noarch
> [root at ip-172-31-2-103 letsencrypt]#rpm -qa | grep ius
> ius-release-1.0-14.ius.el6.noarch
> [root at ip-172-31-2-103 letsencrypt]# ./letsencrypt-auto --verbose
>
> Bootstrapping dependencies for RedHat-based OSes...
> yum is /usr/bin/yum
> Failed to set locale, defaulting to C
> Loaded plugins: amazon-id, rhui-lb, security
> Setting up Install Process
> Package python-2.6.6-64.el6.x86_64 already installed and latest version
> Package python-devel-2.6.6-64.el6.x86_64 already installed and latest version
> Package python-virtualenv-1.10.1-1.el6.noarch already installed and
> latest version
> Nothing to do
> Failed to set locale, defaulting to C
> Loaded plugins: amazon-id, rhui-lb, security
> Setting up Install Process
> Package git-1.7.1-3.el6_4.1.x86_64 already installed and latest version
> Package gcc-4.4.7-16.el6.x86_64 already installed and latest version
> Package dialog-1.1-9.20080819.1.el6.x86_64 already installed and latest version
> Package augeas-libs-1.0.0-10.el6.x86_64 already installed and latest version
> Package openssl-devel-1.0.1e-42.el6.x86_64 already installed and latest version
> No package libffi-devel available.
> Package redhat-rpm-config-9.0.3-44.el6.noarch already installed and
> latest version
> Package ca-certificates-2015.2.4-65.0.1.el6_6.noarch already installed
> and latest version
> Nothing to do
> Creating virtual environment...
> Running virtualenv with interpreter /usr/bin/python2.7
> New python executable in /root/.local/share/letsencrypt/bin/python2.7
> Also creating executable in /root/.local/share/letsencrypt/bin/python
> Installing Setuptools..............................................................................................................................................................................................................................done.
> Installing Pip.....................................................................................................................................................................................................................................................................................................................................done.
> Updating letsencrypt and virtual environment dependencies...
> Downloading/unpacking setuptools from
> https://pypi.python.org/packages/source/s/setuptools/setuptools-18.7.1.tar.gz#md5=a0984da9cd8d7b582e1fd7de67dfdbcc
> Downloading setuptools-18.7.1.tar.gz (628kB): 628kB downloaded
> Running setup.py egg_info for package setuptools
>
> Installing collected packages: setuptools
> Found existing installation: setuptools 0.9.8
> Uninstalling setuptools:
> Successfully uninstalled setuptools
> Running setup.py install for setuptools
>
> Installing easy_install script to /root/.local/share/letsencrypt/bin
> Installing easy_install-2.7 script to /root/.local/share/letsencrypt/bin
> Successfully installed setuptools
> Cleaning up...
> Downloading/unpacking pip from
> https://pypi.python.org/packages/source/p/pip/pip-7.1.2.tar.gz#md5=3823d2343d9f3aaab21cf9c917710196
> Downloading pip-7.1.2.tar.gz (1.0MB): 1.0MB downloaded
> Running setup.py egg_info for package pip
>
> warning: no previously-included files found matching '.coveragerc'
> warning: no previously-included files found matching '.mailmap'
> warning: no previously-included files found matching '.travis.yml'
> warning: no previously-included files found matching 'pip/_vendor/Makefile'
> warning: no previously-included files found matching 'tox.ini'
> warning: no previously-included files found matching 'dev-requirements.txt'
> no previously-included directories found matching '.travis'
> no previously-included directories found matching 'docs/_build'
> no previously-included directories found matching 'contrib'
> no previously-included directories found matching 'tasks'
> no previously-included directories found matching 'tests'
> Installing collected packages: pip
> Found existing installation: pip 1.4.1
> Uninstalling pip:
> Successfully uninstalled pip
> Running setup.py install for pip
>
> warning: no previously-included files found matching '.coveragerc'
> warning: no previously-included files found matching '.mailmap'
> warning: no previously-included files found matching '.travis.yml'
> warning: no previously-included files found matching 'pip/_vendor/Makefile'
> warning: no previously-included files found matching 'tox.ini'
> warning: no previously-included files found matching 'dev-requirements.txt'
> no previously-included directories found matching '.travis'
> no previously-included directories found matching 'docs/_build'
> no previously-included directories found matching 'contrib'
> no previously-included directories found matching 'tasks'
> no previously-included directories found matching 'tests'
> Installing pip script to /root/.local/share/letsencrypt/bin
> Installing pip2.7 script to /root/.local/share/letsencrypt/bin
> Installing pip2 script to /root/.local/share/letsencrypt/bin
> Successfully installed pip
> Cleaning up...
> Collecting letsencrypt
> Using cached letsencrypt-0.1.0-py2-none-any.whl
> Collecting letsencrypt-apache
> Using cached letsencrypt_apache-0.1.0-py2-none-any.whl
> Collecting ConfigArgParse from
> git+https://github.com/kuba/ConfigArgParse.git@python2.6-0.9.3#egg=ConfigArgParse
> (from -r ./py26reqs.txt (line 1))
> Cloning https://github.com/kuba/ConfigArgParse.git (to
> python2.6-0.9.3) to /tmp/pip-build-Qd370u/ConfigArgParse
> Collecting acme==0.1.0 (from letsencrypt)
> Using cached acme-0.1.0-py2-none-any.whl
> Requirement already up-to-date: setuptools in
> /root/.local/share/letsencrypt/lib/python2.7/site-packages (from
> letsencrypt)
> Collecting python2-pythondialog>=3.2.2rc1 (from letsencrypt)
> Using cached python2-pythondialog-3.3.0.tar.bz2
> Collecting PyOpenSSL (from letsencrypt)
> Using cached pyOpenSSL-0.15.1-py2.py3-none-any.whl
> Collecting requests (from letsencrypt)
> Using cached requests-2.8.1-py2.py3-none-any.whl
> Collecting parsedatetime (from letsencrypt)
> Using cached parsedatetime-1.5-py2-none-any.whl
> Collecting configobj (from letsencrypt)
> Using cached configobj-5.0.6.tar.gz
> Collecting pytz (from letsencrypt)
> Using cached pytz-2015.7-py2.py3-none-any.whl
> Collecting psutil>=2.1.0 (from letsencrypt)
> Using cached psutil-3.3.0.tar.gz
> Collecting six (from letsencrypt)
> Using cached six-1.10.0-py2.py3-none-any.whl
> Collecting cryptography>=0.7 (from letsencrypt)
> Using cached cryptography-1.1.1.tar.gz
> Collecting zope.interface (from letsencrypt)
> Using cached zope.interface-4.1.3.tar.gz
> Collecting zope.component (from letsencrypt)
> Using cached zope.component-4.2.2.tar.gz
> Collecting mock (from letsencrypt)
> Using cached mock-1.3.0-py2.py3-none-any.whl
> Collecting pyrfc3339 (from letsencrypt)
> Using cached pyRFC3339-1.0-py2.py3-none-any.whl
> Collecting python-augeas (from letsencrypt-apache)
> Using cached python-augeas-0.5.0.tar.gz
> Collecting pyasn1 (from acme==0.1.0->letsencrypt)
> Using cached pyasn1-0.1.9-py2.py3-none-any.whl
> Collecting ndg-httpsclient (from acme==0.1.0->letsencrypt)
> Using cached ndg_httpsclient-0.4.0.tar.gz
> Collecting werkzeug (from acme==0.1.0->letsencrypt)
> Using cached Werkzeug-0.11.2-py2.py3-none-any.whl
> Collecting idna>=2.0 (from cryptography>=0.7->letsencrypt)
> Using cached idna-2.0-py2.py3-none-any.whl
> Collecting enum34 (from cryptography>=0.7->letsencrypt)
> Using cached enum34-1.1.1.tar.gz
> Collecting ipaddress (from cryptography>=0.7->letsencrypt)
> Using cached ipaddress-1.0.15-py27-none-any.whl
> Collecting cffi>=1.1.0 (from cryptography>=0.7->letsencrypt)
> Using cached cffi-1.3.1.tar.gz
> Collecting zope.event (from zope.component->letsencrypt)
> Using cached zope.event-4.1.0.tar.gz
> Collecting funcsigs (from mock->letsencrypt)
> Using cached funcsigs-0.4-py2.py3-none-any.whl
> Collecting pbr>=0.11 (from mock->letsencrypt)
> Using cached pbr-1.8.1-py2.py3-none-any.whl
> Collecting pycparser (from cffi>=1.1.0->cryptography>=0.7->letsencrypt)
> Using cached pycparser-2.14.tar.gz
> Installing collected packages: pytz, requests, pyasn1, idna, six,
> enum34, ipaddress, pycparser, cffi, cryptography, PyOpenSSL,
> ndg-httpsclient, werkzeug, funcsigs, pbr, mock, pyrfc3339, acme,
> python2-pythondialog, parsedatetime, configobj, psutil,
> zope.interface, zope.event, zope.component, ConfigArgParse,
> letsencrypt, python-augeas, letsencrypt-apache
> Running setup.py install for enum34
> Running setup.py install for pycparser
> Running setup.py install for cffi
> Complete output from command
> /root/.local/share/letsencrypt/bin/python2.7 -c "import setuptools,
> tokenize;__file__='/tmp/pip-build-Qd370u/cffi/setup.py';exec(compile(getattr(tokenize,
> 'open', open)(__file__).read().replace('\r\n', '\n'), __file__,
> 'exec'))" install --record /tmp/pip-jGJmum-record/install-record.txt
> --single-version-externally-managed --compile --install-headers
> /root/.local/share/letsencrypt/include/site/python2.7/cffi:
> Package libffi was not found in the pkg-config search path.
> Perhaps you should add the directory containing `libffi.pc'
> to the PKG_CONFIG_PATH environment variable
> No package 'libffi' found
> Package libffi was not found in the pkg-config search path.
> Perhaps you should add the directory containing `libffi.pc'
> to the PKG_CONFIG_PATH environment variable
> No package 'libffi' found
> Package libffi was not found in the pkg-config search path.
> Perhaps you should add the directory containing `libffi.pc'
> to the PKG_CONFIG_PATH environment variable
> No package 'libffi' found
> Package libffi was not found in the pkg-config search path.
> Perhaps you should add the directory containing `libffi.pc'
> to the PKG_CONFIG_PATH environment variable
> No package 'libffi' found
> Package libffi was not found in the pkg-config search path.
> Perhaps you should add the directory containing `libffi.pc'
> to the PKG_CONFIG_PATH environment variable
> No package 'libffi' found
> 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/cffi
> copying cffi/cparser.py -> build/lib.linux-x86_64-2.7/cffi
> copying cffi/model.py -> build/lib.linux-x86_64-2.7/cffi
> copying cffi/lock.py -> build/lib.linux-x86_64-2.7/cffi
> copying cffi/setuptools_ext.py -> build/lib.linux-x86_64-2.7/cffi
> copying cffi/backend_ctypes.py -> build/lib.linux-x86_64-2.7/cffi
> copying cffi/vengine_gen.py -> build/lib.linux-x86_64-2.7/cffi
> copying cffi/commontypes.py -> build/lib.linux-x86_64-2.7/cffi
> copying cffi/api.py -> build/lib.linux-x86_64-2.7/cffi
> copying cffi/cffi_opcode.py -> build/lib.linux-x86_64-2.7/cffi
> copying cffi/__init__.py -> build/lib.linux-x86_64-2.7/cffi
> copying cffi/vengine_cpy.py -> build/lib.linux-x86_64-2.7/cffi
> copying cffi/verifier.py -> build/lib.linux-x86_64-2.7/cffi
> copying cffi/recompiler.py -> build/lib.linux-x86_64-2.7/cffi
> copying cffi/gc_weakref.py -> build/lib.linux-x86_64-2.7/cffi
> copying cffi/ffiplatform.py -> build/lib.linux-x86_64-2.7/cffi
> copying cffi/_cffi_include.h -> build/lib.linux-x86_64-2.7/cffi
> copying cffi/parse_c_type.h -> build/lib.linux-x86_64-2.7/cffi
> running build_ext
> building '_cffi_backend' extension
> creating build/temp.linux-x86_64-2.7
> creating build/temp.linux-x86_64-2.7/c
> gcc -pthread -fno-strict-aliasing -O2 -g -pipe -Wall
> -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector
> --param=ssp-buffer-size=4 -m64 -mtune=generic -D_GNU_SOURCE -fPIC
> -fwrapv -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2
> -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64
> -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -fPIC -DUSE__THREAD
> -I/usr/include/ffi -I/usr/include/libffi -I/usr/include/python2.7 -c
> c/_cffi_backend.c -o build/temp.linux-x86_64-2.7/c/_cffi_backend.o
> c/_cffi_backend.c:13:17: error: ffi.h: No such file or directory
> In file included from c/_cffi_backend.c:61:
> c/malloc_closure.h:81: error: expected specifier-qualifier-list
> before 'ffi_closure'
> c/malloc_closure.h: In function 'more_core':
> c/malloc_closure.h:117: warning: division by zero
> c/malloc_closure.h:149: error: 'union mmaped_block' has no member
> named 'next'
> c/malloc_closure.h: At top level:
> c/malloc_closure.h:158: error: expected ')' before '*' token
> c/malloc_closure.h:166: error: expected '=', ',', ';', 'asm' or
> '__attribute__' before '*' token
> c/_cffi_backend.c:250: error: expected specifier-qualifier-list
> before 'ffi_cif'
> c/_cffi_backend.c: In function 'cdataowninggc_dealloc':
> c/_cffi_backend.c:1614: error: 'ffi_closure' undeclared (first use
> in this function)
> c/_cffi_backend.c:1614: error: (Each undeclared identifier is
> reported only once
> c/_cffi_backend.c:1614: error: for each function it appears in.)
> c/_cffi_backend.c:1614: error: 'closure' undeclared (first use in
> this function)
> c/_cffi_backend.c:1614: error: expected expression before ')' token
> c/_cffi_backend.c:1617: warning: implicit declaration of function
> 'cffi_closure_free'
> c/_cffi_backend.c: In function 'cdataowninggc_traverse':
> c/_cffi_backend.c:1634: error: 'ffi_closure' undeclared (first use
> in this function)
> c/_cffi_backend.c:1634: error: 'closure' undeclared (first use in
> this function)
> c/_cffi_backend.c:1634: error: expected expression before ')' token
> c/_cffi_backend.c: In function 'cdataowninggc_clear':
> c/_cffi_backend.c:1654: error: 'ffi_closure' undeclared (first use
> in this function)
> c/_cffi_backend.c:1654: error: 'closure' undeclared (first use in
> this function)
> c/_cffi_backend.c:1654: error: expected expression before ')' token
> c/_cffi_backend.c: In function 'cdataowninggc_repr':
> c/_cffi_backend.c:1842: error: 'ffi_closure' undeclared (first use
> in this function)
> c/_cffi_backend.c:1842: error: expected expression before ')' token
> c/_cffi_backend.c: At top level:
> c/_cffi_backend.c:2418: error: expected declaration specifiers or
> '...' before 'ffi_abi'
> c/_cffi_backend.c: In function 'cdata_call':
> c/_cffi_backend.c:2547: error: 'ffi_abi' undeclared (first use in
> this function)
> c/_cffi_backend.c:2547: error: expected ';' before 'fabi'
> c/_cffi_backend.c:2589: error: 'fabi' undeclared (first use in
> this function)
> c/_cffi_backend.c:2593: error: too many arguments to function
> 'fb_prepare_cif'
> c/_cffi_backend.c:2598: error: 'cif_description_t' has no member
> named 'exchange_size'
> c/_cffi_backend.c:2608: error: 'cif_description_t' has no member
> named 'exchange_offset_arg'
> c/_cffi_backend.c:2638: error: 'cif_description_t' has no member
> named 'exchange_offset_arg'
> c/_cffi_backend.c:2643: warning: implicit declaration of function 'ffi_call'
> c/_cffi_backend.c:2643: error: 'cif_description_t' has no member named 'cif'
> c/_cffi_backend.c: In function 'new_primitive_type':
> c/_cffi_backend.c:3765: error: 'ffi_type' undeclared (first use in
> this function)
> c/_cffi_backend.c:3765: error: 'ffitype' undeclared (first use in
> this function)
> c/_cffi_backend.c:3783: error: 'ffi_type_sint8' undeclared (first
> use in this function)
> c/_cffi_backend.c:3784: error: 'ffi_type_sint16' undeclared (first
> use in this function)
> c/_cffi_backend.c:3785: error: 'ffi_type_sint32' undeclared (first
> use in this function)
> c/_cffi_backend.c:3786: error: 'ffi_type_sint64' undeclared (first
> use in this function)
> c/_cffi_backend.c:3792: error: 'ffi_type_float' undeclared (first
> use in this function)
> c/_cffi_backend.c:3794: error: 'ffi_type_double' undeclared (first
> use in this function)
> c/_cffi_backend.c:3802: error: 'ffi_type_longdouble' undeclared
> (first use in this function)
> c/_cffi_backend.c:3809: error: 'ffi_type_uint8' undeclared (first
> use in this function)
> c/_cffi_backend.c:3810: error: 'ffi_type_uint16' undeclared (first
> use in this function)
> c/_cffi_backend.c:3811: error: 'ffi_type_uint32' undeclared (first
> use in this function)
> c/_cffi_backend.c:3812: error: 'ffi_type_uint64' undeclared (first
> use in this function)
> c/_cffi_backend.c: At top level:
> c/_cffi_backend.c:4448: error: expected specifier-qualifier-list
> before 'ffi_type'
> c/_cffi_backend.c:4467: error: expected '=', ',', ';', 'asm' or
> '__attribute__' before '*' token
> c/_cffi_backend.c: In function 'fb_build':
> c/_cffi_backend.c:4607: error: 'struct funcbuilder_s' has no
> member named 'atypes'
> c/_cffi_backend.c:4607: error: 'ffi_type' undeclared (first use in
> this function)
> c/_cffi_backend.c:4607: error: expected expression before ')' token
> c/_cffi_backend.c:4608: error: 'struct funcbuilder_s' has no
> member named 'nargs'
> c/_cffi_backend.c:4611: error: 'struct funcbuilder_s' has no
> member named 'rtype'
> c/_cffi_backend.c:4611: warning: implicit declaration of function
> 'fb_fill_type'
> c/_cffi_backend.c:4619: error: 'cif_description_t' has no member
> named 'exchange_offset_arg'
> c/_cffi_backend.c:4622: error: 'struct funcbuilder_s' has no
> member named 'rtype'
> c/_cffi_backend.c:4623: error: 'ffi_arg' undeclared (first use in
> this function)
> c/_cffi_backend.c:4633: error: 'atype' undeclared (first use in
> this function)
> c/_cffi_backend.c:4646: error: 'struct funcbuilder_s' has no
> member named 'atypes'
> c/_cffi_backend.c:4647: error: 'struct funcbuilder_s' has no
> member named 'atypes'
> c/_cffi_backend.c:4650: error: 'cif_description_t' has no member
> named 'exchange_offset_arg'
> c/_cffi_backend.c:4657: error: 'cif_description_t' has no member
> named 'exchange_size'
> c/_cffi_backend.c: In function 'fb_build_name':
> c/_cffi_backend.c:4679: error: 'struct funcbuilder_s' has no
> member named 'nargs'
> c/_cffi_backend.c:4696: error: 'struct funcbuilder_s' has no
> member named 'fct'
> c/_cffi_backend.c:4698: error: 'struct funcbuilder_s' has no
> member named 'fct'
> c/_cffi_backend.c: In function 'fb_prepare_ctype':
> c/_cffi_backend.c:4739: error: 'struct funcbuilder_s' has no
> member named 'fct'
> c/_cffi_backend.c:4749: error: 'struct funcbuilder_s' has no
> member named 'fct'
> c/_cffi_backend.c: At top level:
> c/_cffi_backend.c:4769: error: expected declaration specifiers or
> '...' before 'ffi_abi'
> c/_cffi_backend.c: In function 'fb_prepare_cif':
> c/_cffi_backend.c:4796: warning: implicit declaration of function
> 'ffi_prep_cif'
> c/_cffi_backend.c:4796: error: 'cif_description_t' has no member named 'cif'
> c/_cffi_backend.c:4796: error: 'fabi' undeclared (first use in
> this function)
> c/_cffi_backend.c:4796: error: 'struct funcbuilder_s' has no
> member named 'nargs'
> c/_cffi_backend.c:4797: error: 'struct funcbuilder_s' has no
> member named 'rtype'
> c/_cffi_backend.c:4797: error: 'struct funcbuilder_s' has no
> member named 'atypes'
> c/_cffi_backend.c:4797: error: 'FFI_OK' undeclared (first use in
> this function)
> c/_cffi_backend.c: In function 'new_function_type':
> c/_cffi_backend.c:4841: error: too many arguments to function
> 'fb_prepare_cif'
> c/_cffi_backend.c:4855: error: 'struct funcbuilder_s' has no
> member named 'nargs'
> c/_cffi_backend.c:4865: error: 'struct funcbuilder_s' has no
> member named 'nargs'
> c/_cffi_backend.c:4875: error: 'struct funcbuilder_s' has no
> member named 'nargs'
> c/_cffi_backend.c:4878: error: 'struct funcbuilder_s' has no
> member named 'nargs'
> c/_cffi_backend.c:4879: error: 'struct funcbuilder_s' has no
> member named 'nargs'
> c/_cffi_backend.c:4881: error: 'struct funcbuilder_s' has no
> member named 'nargs'
> c/_cffi_backend.c: In function 'b_new_function_type':
> c/_cffi_backend.c:4892: error: 'FFI_DEFAULT_ABI' undeclared (first
> use in this function)
> c/_cffi_backend.c: In function 'convert_from_object_fficallback':
> c/_cffi_backend.c:4911: error: 'ffi_arg' undeclared (first use in
> this function)
> c/_cffi_backend.c: At top level:
> c/_cffi_backend.c:4986: error: expected ')' before '*' token
> c/_cffi_backend.c: In function 'b_callback':
> c/_cffi_backend.c:5093: error: 'ffi_closure' undeclared (first use
> in this function)
> c/_cffi_backend.c:5093: error: 'closure' undeclared (first use in
> this function)
> c/_cffi_backend.c:5120: error: 'ffi_arg' undeclared (first use in
> this function)
> c/_cffi_backend.c:5138: warning: implicit declaration of function
> 'cffi_closure_alloc'
> c/_cffi_backend.c:5156: warning: implicit declaration of function
> 'ffi_prep_closure'
> c/_cffi_backend.c:5156: error: 'cif_description_t' has no member named 'cif'
> c/_cffi_backend.c:5157: error: 'invoke_callback' undeclared (first
> use in this function)
> c/_cffi_backend.c:5157: error: 'FFI_OK' undeclared (first use in
> this function)
> In file included from c/cffi1_module.c:3,
> from c/_cffi_backend.c:6366:
> c/realize_c_type.c: In function 'realize_c_type_or_func':
> c/realize_c_type.c:577: error: 'FFI_DEFAULT_ABI' undeclared (first
> use in this function)
> c/_cffi_backend.c: In function 'init_cffi_backend':
> c/_cffi_backend.c:6458: error: 'FFI_DEFAULT_ABI' undeclared (first
> use in this function)
> error: command 'gcc' failed with exit status 1
>
> ----------------------------------------
> Command "/root/.local/share/letsencrypt/bin/python2.7 -c "import
> setuptools, tokenize;__file__='/tmp/pip-build-Qd370u/cffi/setup.py';exec(compile(getattr(tokenize,
> 'open', open)(__file__).read().replace('\r\n', '\n'), __file__,
> 'exec'))" install --record /tmp/pip-jGJmum-record/install-record.txt
> --single-version-externally-managed --compile --install-headers
> /root/.local/share/letsencrypt/include/site/python2.7/cffi" failed
> with error code 1 in /tmp/pip-build-Qd370u/cffi
> [root at ip-172-31-2-103 letsencrypt]#
>
>
> Regards,
>
> Kaushal
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