[CMake] many false positives in ctest error/warning reporting

[Jean-Christophe Fillion-Robin]

Note that CTEST_USE_LAUNCHER works only with Makefile based generators.

It will lead to unexpected behavior if it's enabled with Visual Studio
generator.

Jc

On Tue, May 10, 2011 at 3:47 PM, Alexander Neundorf <a.neundorf-work at gmx.net
> wrote:

> Hi Matthias,
>
> On Tuesday 10 May 2011, Matthias Kretz wrote:
> > Hi,
> >
> > the regular expressions for errors and warnings in
> > Source/CTest/cmCTestBuildHandler.cxx appear to be too general. I have a
> > dashboard where all of the nightly builds are done with parallel builds
> > (-j24 for the machine with the most cores). Often this results in messed
> > up compiler output since the output streams of the different make threads
> > are not synchronized. So one can easily get something like: "from
> /.../Vc-
> > Continuous7/include/Vc/Vc:22/.../Vc-
> > Continuous7/include/Vc/global.h:139:8:/.../Vc-
> > Continuous7/include/Vc/global.h:139:8: ," which is then matched as an
> > error. (See http://code.compeng.uni-
> > frankfurt.de/dashboard/viewBuildError.php?buildid=36336 ).
>
> Are you using cmake >= 2.8 ?
> If so, there the switch CTEST_USE_LAUNCHERS. If this is set in your ctest-
> script, the output parsing works better. Are you already using this ?
>
> > In reality the
> > output that got pushed to the next line showed that it's a warning, and
> > even one that I put into the code there myself and thus rather would warn
> > about if it's missing. Since that feature is not there, I just suppress
> > all the warnings that I expect. So, in fact, this build should have
> turned
> > out clean, except for the "mandel.cpp:115: warning: 'int min(int, int)'
> > defined but not used" warning. I got one error and 3 warnings.
> >
> > AFAICS the incorrect reports mostly come from this regex:
> > ([^ :]+):([0-9]+): ([^ \t]))
> > In my opinion this regex is way too general and I'd like to disable it.
> But
> > I certainly don't want to put this regex into
> > CTEST_CUSTOM_ERROR_EXCEPTION.
>
> Why not ?
>
> Alex
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