[Insight-developers] Intermittent compile errors for header tests

[Bill Lorensen]

David,

Nice detective work.

Bill

On Mon, Aug 15, 2011 at 10:58 AM, David Cole <david.cole at kitware.com> wrote:

> On Sat, Aug 13, 2011 at 5:37 PM, Bill Lorensen <bill.lorensen at gmail.com>
> wrote:
> > Matt,
> >
> > I have had intermittent problems on my local system that I also attribute
> to
> > virus programs. I guess we have to live with it.
> >
> > Bill
> >
> > On Sat, Aug 13, 2011 at 5:22 PM, Matthew McCormick (thewtex)
> > <matt at mmmccormick.com> wrote:
> >>
> >> Hi Bill,
> >>
> >> I am not sure of the problem, but my only suspicion  is that a virus
> >> checker or other program is contending for the files (Windows cannot
> >> handle two programs opening the same file.)  But I am not sure.
> >>
> >> Thanks,
> >> Matt
> >>
> >> On Sat, Aug 13, 2011 at 3:16 PM, Bill Lorensen <bill.lorensen at gmail.com
> >
> >> wrote:
> >> > Here is another example:
> >> > http://www.cdash.org/CDash/viewBuildError.php?buildid=1426273
> >> >
> >> > On Sat, Aug 13, 2011 at 3:13 PM, Bill Lorensen <
> bill.lorensen at gmail.com>
> >> > wrote:
> >> >>
> >> >> Matt,
> >> >>
> >> >> I see errors like this occasionally:
> >> >> http://www.cdash.org/CDash/viewBuildError.php?buildid=1427996
> >> >>
> >> >> Any idea what is going on? Is it a parallel build issue?
> >> >>
> >> >> Bill
> >> >>
> >> >
> >> >
> >
> >
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>
>
> This particular error likely has nothing to do with external things
> like virus checkers and everything to do with incorrect depedency
> specifications.
>
> This is output from a parallel project build in Visual Studio:
>
> 180>------ Build started: Project: ITKNeuralNetworksHeaderTest1,
> Configuration: Release Win32 ------
> 180>Generating test/ITKNeuralNetworksHeaderTest1.cxx,
> test/ITKNeuralNetworksHeaderTest2.cxx
> 179>Compiling...
> 179>ITKNeuralNetworksHeaderTest2.cxx
> 180>Traceback (most recent call last):
> 180>  File
> "C:\Dashboards\Client\base\ITK-Gerrit\Utilities\Maintenance\BuildHeaderTest.py",
> line 133, in <module>
> 180>    ret = main()
> 180>  File
> "C:\Dashboards\Client\base\ITK-Gerrit\Utilities\Maintenance\BuildHeaderTest.py",
> line 103, in main
> 180>    test_src = open(test_source_file, 'w')
>
> 180>IOError: [Errno 13] Permission denied:
>
> '/.../ITK-Gerrit-bin/Modules/Numerics/NeuralNetworks\\test\\ITKNeuralNetworksHeaderTest2.cxx'
>
>
> As you can see, project "180" claims to be "Generating ...
> test/ITKNeuralNetworksHeaderTest2.cxx" and then project "179" (which
> started before 180) is compiling that very same file:
> ITKNeuralNetworksHeaderTest2.cxx... which means that it or a
> predecessor *also* generated that source file. (else there wouldn't be
> something to compile...)
>
> Now, either the file is named the same but in different directories
> (and I'm mis-diagnosing this) or the file is the very same file, and
> there's a mistake in the custom command dependencies that lead up to
> its creation.
>
> This is most likely our own issue to deal with and not something we
> can pawn off on a mysterious surmised external factor...
>
>
> David C.
>
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