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SWIG Python bindings build with SWIG 4.0 (was: Re: Issue tracker housecleaning: SVN-1722)

From: Yasuhito FUTATSUKI <futatuki_at_poem.co.jp>
Date: Sat, 19 Oct 2019 18:45:28 +0900

On 2019/10/18 8:39, Branko Čibej wrote:
> On 17.10.2019 23:46, Branko Čibej wrote:
>> On 17.10.2019 23:01, Daniel Shahaf wrote:
>>> Branko Čibej wrote on Thu, Oct 17, 2019 at 22:56:29 +0200:
>>>> On 17.10.2019 22:37, Daniel Shahaf wrote:
>>>>> Branko Čibej wrote on Thu, 17 Oct 2019 06:49 +00:00:
>>>>>> On 16.10.2019 10:01, Daniel Shahaf wrote:
>>>>>>> Which reminds me: it'd be nice to set up a buildbot to run the build and
>>>>>>> test process under Python 3. Any committer can edit the buildbot
>>>>>>> scripts[1], but the question is which of the buildbot slaves has Python 3
>>>>>>> installed?
>>>>>> https://ci.apache.org/builders/svn-x64-macosx-local-python3
>>>>>> Been there, done that, bought the DVD.
>>>>> Why are svnadmin_tests 69 and tree_conflict_tests 26 passing on that
>>>>> bot? They (currently) fail under python3.
>>>> I don't know. It's possible, I suppose, that the activation of the
>>>> python3 virtual environment has no effect on the test driver. It might
>>>> not be a bad idea to have the tests print the Python version in the
>>>> summary and possibly in the log of every test case.
>>> What's the value of $(PYTHON) in Makefile? That's what the «check» target uses.
>> Yep, apparently that's the bug ... I'm testing script changes now, along
>> with r1868566 for good measure.
> I've set up this:
> https://ci.apache.org/builders/svn-x64-macosx-local-python3-swig
> It will build and test the core libraries and swig-py bindings with
> Python 3 on the swig-py3 branch.
> I hope ... build #0 running as we speak.

Unfortunately build #2, which ran after upgrading SWIG and Python, failed
to build SWIG Python bindings because of SWIG 4.0, as reported on SVN-4818.

This also affects on trunk with SWIG 4.0.
(e.g. https://ci.apache.org/builders/svn-x64-macosx-full/builds/2418)

With attached patch on trunk (trunk_build_with_swig4_patch.txt) and
on swig-py3 (swig_py3_build_with_swig4_patch.txt), *.so can be produced,
but the modules don't work correctly.

It seems they were caused by incompatibility of Python code for proxy
object generated by SWIG, and it can not be resolved so simple....
(importlib module vs simply use 'import', absense of _swig_setattr()
and _swig_getattr(), etc.)


Yasuhito FUTATSUKI <futatuki_at_poem.co.jp>

Received on 2019-10-19 11:55:58 CEST

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