[vtk-developers] Python Wrapping fails in master build.

[Andrew Maclean]

Just to add to this, I'm using CMake 3.12.2, the latest release version of
nmake built by the latest release of VS2017. One machine is my new Dell
XPS-15 9570 4k laptop 32GB memory 1TB ssd
 and, it's fast! I installed Kubuntu as a dual boot on it and builds there
are the fastest I've ever seen. The other machine is a desktop with the
same software also dual boot. So it's the latest software on both machines.

Andrew Maclean

On Wed, 26 Sep 2018, 14:23 David Gobbi <david.gobbi at gmail.com> wrote:

> Hi Andras, it's good to hear that someone else has seen problems similar
> to what Andrew is seeing.
>
> On Tue, Sep 25, 2018 at 7:37 PM Andras Lasso <lasso at queensu.ca> wrote:
>
>> It is probably worth asking CMake developers about what could be a good
>> approach to address this.
>>
>>
> Brad, have there been any new discoveries about why compiler tests and
> custom-command outputs fail to open their output files on Windows as
> described in this cmake issue? (https://cmake.org/Bug/view.php?id=12957).
> This is something that Andrew is seeing on his machine, that I haven't been
> able to reproduce on my own machine yet.
>
> Retrying a file operation can have many non-trivial side effects so it
>> should be avoided. As far as I know, there is no such workaround anywhere
>> in CMake, so it should be possible to avoid it in vtkWrapPython, too.
>>
>
> This isn't always true.  On Linux when fread fails with errno=EINTR,
> retrying is the correct response, and there are a few places where this is
> done in the CMake code base.  The errno=EINTR condition is very short
> lived.  It would be nice if the failure on Windows was something similar
> (i.e. instantly retryable) but I suspect it isn't.  I strongly suspect the
> failure is a sharing violation, for which the correct response is usually
> to write to a different file (which is not ideal).
>
>   David
>
>>
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