Re: undefined symbol: _PyUnicodeUCS4_AsDefaultEncodedString

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Date	Mon, 3 Feb 2014 12:59:42 -0600
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Subject	Re: undefined symbol: _PyUnicodeUCS4_AsDefaultEncodedString
From	Skip Montanaro <skip@pobox.com>
To	Chris Angelico <rosuav@gmail.com>
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On Mon, Feb 3, 2014 at 12:27 PM, Chris Angelico <rosuav@gmail.com> wrote:
> On Tue, Feb 4, 2014 at 4:41 AM, Skip Montanaro <skip@pobox.com> wrote:
>> I think this means that at configure time, OpenSuSE and our vendor
>> chose different values for the --enable-unicode option. Is that
>> correct?
>
> Easy enough to check. Fire up each Python and have a look at what
> sys.maxunicode is - if it's 65535, you have a buggy-mode Python that
> uses either UCS-2 or UTF-16 internally.

Thanks. I get 65535 for our vendor-built Python, and 1114111 from
/usr/bin/python. So (no great surprise), it looks like our vendor is
to blame.

> But there is another concern, which your second point minorly touches
> on. I'm not certain, but I think the name
> _PyUnicodeUCS4_AsDefaultEncodedString means that VTK was built against
> a wide Python ("UCS4") and calls _PyUnicode_AsDefaultEncodedString.
> According to PEP 393, that function - which had always been internal
> anyway - is completely removed. Porting VTK to Python 3.3+ will mean
> changing that.

I'm not concerned about that, certainly not in the immediate term.
/usr/bin/python and VTK appear to agree on this stuff. I trust Kitware
and the OpenSuSE people to take care of these sorts of problems if VTK
ever supports Python 3.x.

Skip

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Re: undefined symbol: _PyUnicodeUCS4_AsDefaultEncodedString Skip Montanaro <skip@pobox.com> - 2014-02-03 12:59 -0600

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