[cmake-developers] [CMake 0013254]: phonon_ds9 backend plugin not found on windows.

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://public.kitware.com/Bug/view.php?id=13254 
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Reported By:                Kurtis Nusbaum
Assigned To:                
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Project:                    CMake
Issue ID:                   13254
Category:                   Modules
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             2012-05-29 15:59 EDT
Last Modified:              2012-05-29 15:59 EDT
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Summary:                    phonon_ds9 backend plugin not found on windows.
Description: 
I'm deploying a Qt application which uses phonon on windows. For some reason,
the DeployQt4.cmake module wasn't finding the phonon_ds9 backend plugin that is
standard with windows installations of Qt4. More specifically (and was I'm
almost positive this was what was tripping up DeployQt4), the
QT_PHONON_DS9_PLUGIN_RELEASE variable was not set. I went and looked at the
FindQt4.cmake file and found this line (it's line 1062 on cmake release 2.8.8):

set( QT_PHONON_BACKEND_PLUGINS phonon_qt7 )

phonon_qt7 is the phonon backend used exclusively on mac. Sure enough, changing
the line to

set( QT_PHONON_BACKEND_PLUGINS phonon_ds9 )

resulted in the variable QT_PHONON_DS9_PLUGIN_RELEASE and
QT_PHONON_DS9_PLUGIN_DEBUG being set to the correct libraries and DeployQt4
module finding the phonon_ds9 plugin and successfully bundling it with my
application. I think this is a bug in FindQt4.cmake

Steps to Reproduce: 
1. Create an application that uses the phonon backend for Qt.
2. Use DeployQt and pass phonon_ds9 and the plugin argument when calling
install_qt4_executable function.

Additional Information: 
Attached is a patch that does a mediocre job at addressing the issue. It
basically, if it detects you're building for an APPLE machine it sets the phonon
backend plugin variable to phonon_qt7 and if you're on windows it sets the
variable to phonon_ds9. This obviously doesn't take into account all the other
possible phonon backend situations. A more rigorous fix would address detecting
the presence of other phonon backends.
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Issue History 
Date Modified    Username       Field                    Change               
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2012-05-29 15:59 Kurtis Nusbaum New Issue                                    
2012-05-29 15:59 Kurtis Nusbaum File Added:
0001-Added-conditional-for-the-phonon-backend-plugin.-If-.patch                 
  
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