[Cmake] Linux icc build of CMake has two tests failing

[Wheeler, Frederick W (Research)]

> > The QT libraries are in /usr/lib on a Linux system, so they 
> must have
> > been compiled by gcc.  How do you turn off the QT tests?  
> Will setting
> > this
> >
> >   QT_QT_LIBRARY:FILEPATH=IGNORE
> >
> > for the configuration of CMake propagate down to Tests/Wrapping?
> 
> That should prevent the qt tests from being added at all. You 
> could also
> set QT_INCLUDE_DIR to be empty as well.

Setting QT_INCLUDE_DIR:PATH=IGNORE does indeed prevent the Qt tests from
being added, so now I'm down to 29 tests, from 30, as expected.  You can see
this on the dashboard continuous builds right now.

Tests/wrapping still fails because the qtwrapping exec cannot be built.  I
have not traced through all the logic, but here is what I think is happening
when Dart compiles and tests CMake.

1. Cmake is built with QT_INCLUDE_DIR:PATH=IGNORE (that I insert), so
QT_FOUND is false and the QT test is skipped.  But the wrapping test is not
skipped.

2. The test framework runs the newly built cmake in Tests/wrapping.  This
cmake run does not use the CMakeCache from the top level, it creates a new
one in Tests/wrapping.  Here Qt is found.

3. When trying to build in Tests/wrapping there are link errors with Qt
because of g++/icc incompatibilities.

Is that close to being right?

Is there a way to pass in QT_INCLUDE_DIR:PATH=IGNORE to the CMake runs that
are done in the Test phase so QT_FOUND is false during step 2?

Fred Wheeler