[PATCHES] Generate shorter name for extra python files

[Lukas Slebodnik]

On (23/09/17 10:15), Andrew Bartlett via samba-technical wrote:
>On Fri, 2017-09-22 at 22:49 +0200, Lukas Slebodnik wrote:
>> 
>> But as i showed you in previous example it is not a problem that
>> symbol is in version script because it is not part of util library
>> for python3. Version script is used as a whitelist to allow symbols from
>> objects *.o appear in library. But if symbol is missing in object files
>> it will not be part of library even though it is in version script.
>>
>> 
>> https://www.akkadia.org/drepper/dsohowto.pdf
>> Section 2.2 says:
>>   The concept of export maps is to tell the linker explicitly
>>   which symbols to export from the generated object.
>> 
>> And it is much simpler to use version script(export maps)
>> then __attribute__ ((visibility ("hidden")))
>> 
>> 
>> But if you prefer to have separate version script(ABI/*) for python2
>> and python3 I do not have a problem with that. I can just see a small
>> benefit in de-duplication.
>
>The ABI files are not just for the version scripts.  They are also used
>to determine if a symbol is removed or the signature changed, and
>triggers logic to reject such a build.
>
>If there is just one ABI file for both, then if python2 requires a
>different ABI to python3, then either on the other will fail a build. 
>
>However, we don't want ABI files for each possible python3 version (35m
>etc), just for python3 overall, hence the .py3 thing.
>
>I hope this helps clarify things.
>

I would like to apologize that it took ages to send updated version of
patches. Hopefully, it would work for everyone.

Adding Timur to CC for checking it for FreeBSD

LS