[issue35061] Specify libffi.so soname for ctypes

[Yongkwan Kim]

Yongkwan Kim  added the comment:

My solution is creating link of libffi.so.6 as .5 This is for anyone who has 
same issue with me.
But thanks for your kind reply though.

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[issue35061] Specify libffi.so soname for ctypes

[Ned Deily]

Ned Deily  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.

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 out of date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

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[issue35061] Specify libffi.so soname for ctypes

[Yongkwan Kim]

Change by Yongkwan Kim :


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components: +Build
type:  -> compile error
versions: +Python 3.7

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[issue35061] Specify libffi.so soname for ctypes

[Yongkwan Kim]

New submission from Yongkwan Kim :

As python 3.7 excludes libffi from it's package, my build on centos6 doesn't 
work on centos7. Error message is following.

ImportError: libffi.so.5: cannot open shared object file: No such file or 
directory

centos7 have libffi.so.6 instead of libffi.so.5 as does centos6. I hope to 
specify libffi version with libffi.so. I figured out that any configure option  
can fix this through seeing setup.py .

Thanks in advance.

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messages: 328406
nosy: tturbs
priority: normal
severity: normal
status: open
title: Specify libffi.so soname for ctypes

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