[cmake-developers] [CMake 0011789]: Unable to force a Qt version to be picked by cmake

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://public.kitware.com/Bug/view.php?id=11789 
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Reported By:                Jean Porcherot
Assigned To:                
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Project:                    CMake
Issue ID:                   11789
Category:                   CMake
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             2011-02-03 03:33 EST
Last Modified:              2011-02-03 03:33 EST
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Summary:                    Unable to force a Qt version to be picked by cmake
Description: 
Hi,

Earlier, I reported issue 0011779
(http://public.kitware.com/Bug/view.php?id=11779). James proposed a great
solution that works...partially.

I Added the qt.conf.in and it works fine...unless there is a Qt version
installed on the PC. As proposed, I set QTDIR to
C:/code/sw/3rdparty/Qt/4.7.1/qt-win32-msvc2008, but, on the PC I run cmake from,
the devlopper installed Qt 4.5.2 some time ago.

Then, FindQt4.cmake picks up the 4.5.2 version of Qt rather than the 4.7.1 I'm
asking it to use through the QTDIR variable.

That's because, we check for the registry before we check for the QTDIR path
(see below):

GET_FILENAME_COMPONENT(qt_install_version
"[HKEY_CURRENT_USER\\Software\\trolltech\\Versions;DefaultQtVersion]" NAME)
FIND_PROGRAM(QT_QMAKE_EXECUTABLE NAMES qmake qmake4 qmake-qt4 qmake-mac PATHS
  "[HKEY_CURRENT_USER\\Software\\Trolltech\\Qt3Versions\\4.0.0;InstallDir]/bin"
  "[HKEY_CURRENT_USER\\Software\\Trolltech\\Versions\\4.0.0;InstallDir]/bin"
 
"[HKEY_CURRENT_USER\\Software\\Trolltech\\Versions\\${qt_install_version};InstallDir]/bin"
  $ENV{QTDIR}/bin
  DOC "The qmake executable for the Qt installation to use"
)

So, once again, I had to modify the FindQt4.cmake script by commenting the
GET_FILENAME_COMPONENT line.

I'd rather not modify this file as the modification will be lost next time I'll
upgrade cmake. Is there another way to workaround the problem from my
CMakeLists.txt?

Thanks in davance

Jean
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Issue History 
Date Modified    Username       Field                    Change               
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2011-02-03 03:33 Jean Porcherot New Issue                                    
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