Ned Deily <n...@python.org> added the comment:

Sorry for the long delay in answering this issue: ctypes and libffi issues do 
not get a lot of attention currently. I assume you must have long ago found a 
solution to the problem but, just for the record and assuming I understand the 
problem correctly, if you build Python on centos6 with its default libffi.so.5 
and then try to move those binaries to a centos7 system that does not include a 
libffi.so.5 along with libffi.so.6, you are out of luck.  Normally, the change 
from .5 to .6 would indicate some ABI incompatibility between the two libffi 
versions. Rebuilding Python on centos7 should produce a working Python that 
links with the latest library versions, including libffi, available on that 
centos release.

----------
nosy: +ned.deily
resolution:  -> out of date
stage:  -> resolved
status: open -> closed

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue35061>
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