Hi,
I am trying to port cryptography to a Buildroot-based ARM system.
Unfortunately basic cross-compilation fails with the message below.
Since I am not a Python programmer and I just need Cryptography as a
prerequisite for autobahn I am unable to understand what went wrong.
It seems to me compilation is trying to use on Host (x86_64) a shared lib
(/home/mcon/emotiq/new/Buildroot/output/target/usr/lib/python2.7/site-packages/_cffi_backend.so)
meant to run on Target (ARM).
Can someone help, please?
Thanks in Advance
Mauro
(cd /home/mcon/emotiq/new/Buildroot/output/build/python-cryptography-1.2.1//; PATH="/home/mcon/emotiq/new/Buildroot/output/host/bin:/home/mcon/emotiq/new/Buildroot/output/host/sbin:/home/mcon/emotiq/new/Buildroot/output/host/usr/bin:/home/mcon/emotiq/new/Buildroot/output/host/usr/sbin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games" CC="/home/mcon/emotiq/new/Buildroot/output/host/usr/bin/arm-buildroot-linux-gnueabi-gcc" CFLAGS="-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -O3 " LDFLAGS="" LDSHARED="/home/mcon/emotiq/new/Buildroot/output/host/usr/bin/arm-buildroot-linux-gnueabi-gcc -shared" PYTHONPATH="/home/mcon/emotiq/new/Buildroot/output/target/usr/lib/python2.7/sysconfigdata/:/home/mcon/emotiq/new/Buildroot/output/target/usr/lib/python2.7/site-packages/" _python_sysroot=/home/mcon/emotiq/new/Buildroot/output/host/usr/arm-buildroot-linux-gnueabi/sysroot _python_prefix=/usr _python_exec_prefix=/usr
/home/mcon/emotiq/new/Buildroot/output/host/usr/bin/python setup.py build --executable=/usr/bin/python )
Installed
/home/mcon/emotiq/new/Buildroot/output/build/python-cryptography-1.2.1/.eggs/cffi-1.5.0-py2.7-linux-x86_64.egg
Searching for pycparser
Reading https://pypi.python.org/simple/pycparser/
Best match: pycparser 2.14
Downloading
https://pypi.python.org/packages/source/p/pycparser/pycparser-2.14.tar.gz#md5=a2bc8d28c923b4fe2b2c3b4b51a4f935
Processing pycparser-2.14.tar.gz
Writing /tmp/easy_install-OMTOyu/pycparser-2.14/setup.cfg
Running pycparser-2.14/setup.py -q bdist_egg --dist-dir
/tmp/easy_install-OMTOyu/pycparser-2.14/egg-dist-tmp-Oz3sRX
warning: no previously-included files matching 'yacctab.*' found under
directory 'tests'
warning: no previously-included files matching 'lextab.*' found under directory
'tests'
warning: no previously-included files matching 'yacctab.*' found under
directory 'examples'
warning: no previously-included files matching 'lextab.*' found under directory
'examples'
zip_safe flag not set; analyzing archive contents...
Moving pycparser-2.14-py2.7.egg to
/home/mcon/emotiq/new/Buildroot/output/build/python-cryptography-1.2.1/.eggs
Installed
/home/mcon/emotiq/new/Buildroot/output/build/python-cryptography-1.2.1/.eggs/pycparser-2.14-py2.7.egg
Traceback (most recent call last):
File "setup.py", line 318, in <module>
**keywords_with_side_effects(sys.argv)
File
"/home/mcon/emotiq/new/Buildroot/output/host/usr/lib/python2.7/distutils/core.py",
line 111, in setup
_setup_distribution = dist = klass(attrs)
File "build/bdist.linux-x86_64/egg/setuptools/dist.py", line 272, in __init__
File
"/home/mcon/emotiq/new/Buildroot/output/host/usr/lib/python2.7/distutils/dist.py",
line 287, in __init__
self.finalize_options()
File "build/bdist.linux-x86_64/egg/setuptools/dist.py", line 327, in
finalize_options
File
"/home/mcon/emotiq/new/Buildroot/output/target/usr/lib/python2.7/site-packages/cffi/setuptools_ext.py",
line 161, in cffi_modules
add_cffi_module(dist, cffi_module)
File
"/home/mcon/emotiq/new/Buildroot/output/target/usr/lib/python2.7/site-packages/cffi/setuptools_ext.py",
line 48, in add_cffi_module
execfile(build_file_name, mod_vars)
File
"/home/mcon/emotiq/new/Buildroot/output/target/usr/lib/python2.7/site-packages/cffi/setuptools_ext.py",
line 24, in execfile
exec(code, glob, glob)
File "src/_cffi_src/build_openssl.py", line 98, in <module>
extra_link_args=extra_link_args(compiler_type()),
File "src/_cffi_src/utils.py", line 64, in build_ffi_for_binding
extra_link_args=extra_link_args,
File "src/_cffi_src/utils.py", line 72, in build_ffi
ffi = FFI()
File
"/home/mcon/emotiq/new/Buildroot/output/target/usr/lib/python2.7/site-packages/cffi/api.py",
line 56, in __init__
import _cffi_backend as backend
ImportError:
/home/mcon/emotiq/new/Buildroot/output/target/usr/lib/python2.7/site-packages/_cffi_backend.so:
wrong ELF class: ELFCLASS32
package/pkg-generic.mk:195: recipe for target
'/home/mcon/emotiq/new/Buildroot/output/build/python-cryptography-1.2.1/.stamp_built'
failed
make[1]: ***
[/home/mcon/emotiq/new/Buildroot/output/build/python-cryptography-1.2.1/.stamp_built]
Error 1
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