[Scons-users] Is the warning about missing pywin32 extensions on parallel builds still needed?

[William Blevins]

In the rare case you didn't know, keep in mind that some early minor
versions for python 2.7 had leaking file descriptors with subprocess, so
make sure that the SCons docs require and test against Python 2.7.4+

V/R,
William

On Wed, Nov 18, 2015 at 5:33 PM, Bill Deegan <bill at baddogconsulting.com>
wrote:

> Currently the pywin32 extensions are used by the code.
> If it's not available I believe it disables parallel builds on win32.
> I'm looking at switching the code to use subprocess, but it may take a
> little bit to verify that such a change is stable.
>
> On Wed, Nov 18, 2015 at 12:06 AM, Erling D. Andersen <
> e.d.andersen at mosek.com> wrote:
>
>> Everything is working fine using Python 2.7.
>>
>> However, I do not understand why the latest Scons prints out:
>>
>> scons: warning: you do not seem to have the pywin32 extensions installed;
>>         parallel (-j) builds may not work reliably with open Python files
>>
>> on Windows. That seems a legacy issue and the warning is no longer
>> needed. So why not remove it?
>>
>>
>> On Tue, Nov 17, 2015 at 3:15 PM, William Blevins <wblevins001 at gmail.com>
>> wrote:
>>
>>>
>>>
>>> On Tue, Nov 17, 2015 at 11:51 AM, Erling D. Andersen <
>>> e.d.andersen at mosek.com> wrote:
>>>
>>>> Did you find out of something? It is still in Scons version 2.4.1 run
>>>> with Python 2.7.
>>>>
>>>
>>> I assume that you mean the warning still exists in SCons 2.4.1.
>>>
>>>
>>>>
>>>> Thanks for the good work with new version. It worked out of the box.
>>>>
>>>
>>> Did version 2.3.6 not work of the box? What is the context?
>>>
>>>
>>>>
>>>> Erling
>>>>
>>>> On Fri, Aug 28, 2015 at 5:08 AM, Bill Deegan <bill at baddogconsulting.com
>>>> > wrote:
>>>>
>>>>> Richard,
>>>>>
>>>>> That's a very good question.
>>>>> I'll have to look into it.
>>>>>
>>>>> -Bill
>>>>>
>>>>> On Thu, Aug 27, 2015 at 6:30 AM, Richard Viney <
>>>>> richard.viney at gmail.com> wrote:
>>>>>
>>>>>> Hi all,
>>>>>>
>>>>>> When running parallel builds under SCons 2.3.6 and Python 2.7.10 on
>>>>>> Windows you get the following warning if the pywin32 extensions aren’t
>>>>>> installed:
>>>>>>
>>>>>> scons: warning: you do not seem to have the pywin32 extensions
>>>>>> installed;
>>>>>>         parallel (-j) builds may not work reliably with open Python
>>>>>> files.
>>>>>>
>>>>>> This was discussed back in 2008 here:
>>>>>> http://comments.gmane.org/gmane.comp.programming.tools.scons.user/17858
>>>>>>
>>>>>> It seems that there were ancient Python versions with threading bugs
>>>>>> and the pywin32 extensions were needed to work around these issues.
>>>>>>
>>>>>> I’m curious whether this still applies given that Python >= 2.6 is
>>>>>> now required? Is this warning still relevant and is pywin32 needed?
>>>>>>
>>>>>> Thanks,
>>>>>> Richard
>>>>>>
>>>>>> _______________________________________________
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>>>>>>
>>>>>>
>>>>>
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>>>>>
>>>>
>>>>
>>>> --
>>>> Erling D. Andersen
>>>>
>>>> MOSEK APS
>>>> Fruebjergvej 3, Box 16,
>>>> DK-2100 Copenhagen O
>>>>
>>>> Ph: +4539179907
>>>> Mo: +4523629520
>>>>
>>>>
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>>>>
>>>
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>>
>>
>> --
>> Erling D. Andersen
>>
>> MOSEK APS
>> Fruebjergvej 3, Box 16,
>> DK-2100 Copenhagen O
>>
>> Ph: +4539179907
>> Mo: +4523629520
>>
>>
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>> https://pairlist4.pair.net/mailman/listinfo/scons-users
>>
>>
>
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