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[Python-Dev] dynamic linking, libssl.1.0.0.dylib, libcrypto.1.0.0.dylib and Mac OS X

Chris Withers chris at simplistix.co.uk
Thu Dec 24 09:40:15 EST 2015 
On 24/12/2015 14:36, Cory Benfield wrote:
>
>> On 24 Dec 2015, at 11:17, Chris Withers <chris at simplistix.co.uk> wrote:
>>
>> Here's a couple of examples of this problem in the wild:
>>
>> https://github.com/alekstorm/backports.ssl/issues/9
>> http://stackoverflow.com/questions/32978365/how-do-i-run-psycopg2-on-el-capitan-without-hitting-a-libssl-error
>> https://github.com/psycopg/psycopg2/issues/385
>>
>> I'm well out of my depth here, I just want to use these libraries, but I'm happy to try and do the work to make the world a better place for Mac users of these libraries...
>>
>
> I think this is actually nothing to do with Python itself, and everything to do with Mac OS X and the neutered way it ships OpenSSL. Given that the library you’re actually having difficulty with is cryptography, I recommend using their mailing list[0] to ask your question again. I happen to know that there have been a few problems with OS X and OpenSSL since El Capitan, so you’re probably not the first to encounter them.

Hi Cory,

I'm not not sure, _ssl included in a Python distribution works and does 
the right thing, it's third party packages built on the machines that 
appear to have the problem.

How does Python itself "get it right" and how could psycopg2 and 
cryptography mirror that?

This feels like a dynamic linking problem rather than something 
ssl-specific.

cheers,

Chris
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