Installing Qt Mobility Libraries on Ubuntu

It's time for me to jump into Qt Mobility development. Yaay!

Here's my steps to prepare Qt Mobility development. I'm using Ubuntu 9.10 Karmic Koala.

1. Make sure you have installed Qt 4.6.
2. Install checkinstall package if you haven't.
   
3. Install network-manager-dev package. This will be used by the Bearer API and System Information API.
4. Install libgstreamer0.10-dev package. This will be used by the Multimedia API implementation.
   
5. Download Qt Mobility library sources.
6. Unpack the Qt Mobility distribution to a folder.
7. Open a terminal on that folder.
8. Set the PATH to Qt 4.6.x libraries:
   
   

   $ export PATH=/opt/qtsdk-2010.01/qt/bin:$PATH
   

9. Set PKG_CONFIG_PATH:
   
   

   $ export PKG_CONFIG_PATH=/usr/lib/pkgconfig
   

10. Run:
    
    

    $ ./configure

    
    

$ ./configure 
Configuring Qt Mobility

Checking available Qt ... 4.6.0
Checking QMF ... Not Found
Checking NetworkManager ... OK
Checking CoreWLAN (MacOS 10.6) ... Not Found
Generating Mobility Headers...
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QNetworkConfiguration
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QNetworkConfigurationManager
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QNetworkSession
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QValueSpaceSubscriber
Create header /opt/qt-mobility-src-1.0.0-tp2/include/SymbianSettingsLayer
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QValueSpacePublisher
Create header /opt/qt-mobility-src-1.0.0-tp2/include/PathMapper
Create header /opt/qt-mobility-src-1.0.0-tp2/include/PathData
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QNmeaPositionInfoSource
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QGeoPositionInfo
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QGeoSatelliteInfoSource
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QGeoCoordinate
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QGeoSatelliteInfo
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QGeoPositionInfoSource
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QGeoAreaMonitor
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QServiceContext
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QServiceManager
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QServicePluginInterface
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QAbstractSecuritySession
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QServiceInterfaceDescriptor
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QServiceFilter
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QSystemInfo
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QSystemNetworkInfo
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QSystemDisplayInfo
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QSystemStorageInfo
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QSystemDeviceInfo
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QSystemScreenSaver
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QContactDetailDefinition
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QContactFilter
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QContactDetailDefinitionField
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QContactChangeSet
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QContactAbstractRequest
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QContactActionFactory
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QContactManagerEngine
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QContactAction
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QContactDetail
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QContactId
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QContactActionDescriptor
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QContact
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QContactRelationship
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QContactSortOrder
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QContactManager
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QContactManagerEngineFactory
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaPlaylistProvider
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QVideoOutputControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMetaDataControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QLocalMediaPlaylistProvider
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaRecorderControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaImageViewer
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaPlaylistReader
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaPlaylistWriter
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaPlaylistIOPlugin
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QVideoEncoderControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaStreamsControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaService
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaPlaylistControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaPlayer
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaPlaylistNavigator
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QGraphicsVideoItem
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaServiceProviderHint
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaServiceProvider
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaRecorder
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QVideoRendererControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QAudioDeviceControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QAudioEncoderControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QRadioTunerControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QVideoDeviceControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QAudioEncoderSettings
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QVideoEncoderSettings
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QImageEncoderSettings
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaResource
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaPlaylist
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaPlayerControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QVideoWidget
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaServiceProviderPlugin
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QVideoWindowControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QImageEncoderControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QVideoWidgetControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaFormatControl
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QRadioTuner
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QAudioCaptureSource
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaObject
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QAudioFormat
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMediaContent
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessageFolderFilter
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessageFilter
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessageFolderOrdering
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessageFolder
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessageId
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessageContentContainer
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessageStore
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessageAccountOrdering
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessage
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessageAddress
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessageServiceAction
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessageFolderId
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessageContentContainerId
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessageAccountFilter
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessageOrdering
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessageAccountId
Create header /opt/qt-mobility-src-1.0.0-tp2/include/QMessageAccount
Running qmake...
Reading /opt/qt-mobility-src-1.0.0-tp2/src/src.pro
 Reading /opt/qt-mobility-src-1.0.0-tp2/src/global/global.pro
 Reading /opt/qt-mobility-src-1.0.0-tp2/src/serviceframework/serviceframework.pro
 Reading /opt/qt-mobility-src-1.0.0-tp2/src/bearer/bearer.pro
Project MESSAGE: NetworkManager backend requires Qt DBus support
 Reading /opt/qt-mobility-src-1.0.0-tp2/src/location/location.pro
 Reading /opt/qt-mobility-src-1.0.0-tp2/src/contacts/contacts.pro
 Reading /opt/qt-mobility-src-1.0.0-tp2/src/multimedia/multimedia.pro
 Reading /opt/qt-mobility-src-1.0.0-tp2/src/publishsubscribe/publishsubscribe.pro
 Reading /opt/qt-mobility-src-1.0.0-tp2/src/versit/versit.pro
 Reading /opt/qt-mobility-src-1.0.0-tp2/src/systeminfo/systeminfo.pro
Reading /opt/qt-mobility-src-1.0.0-tp2/tools/tools.pro
 Reading /opt/qt-mobility-src-1.0.0-tp2/tools/servicefw/servicefw.pro
 Reading /opt/qt-mobility-src-1.0.0-tp2/tools/servicexmlgen/servicexmlgen.pro
 Reading /opt/qt-mobility-src-1.0.0-tp2/tools/vsexplorer/vsexplorer.pro
 Reading /opt/qt-mobility-src-1.0.0-tp2/tools/qcrmlgen/qcrmlgen.pro
Reading /opt/qt-mobility-src-1.0.0-tp2/plugins/plugins.pro
 Reading /opt/qt-mobility-src-1.0.0-tp2/plugins/contacts/contacts.pro
 Reading /opt/qt-mobility-src-1.0.0-tp2/plugins/multimedia/multimedia.pro
Package gstreamer-interfaces-0.10 was not found in the pkg-config search path.
Perhaps you should add the directory containing `gstreamer-interfaces-0.10.pc'
to the PKG_CONFIG_PATH environment variable
No package 'gstreamer-interfaces-0.10' found
Package gstreamer-audio-0.10 was not found in the pkg-config search path.
Perhaps you should add the directory containing `gstreamer-audio-0.10.pc'
to the PKG_CONFIG_PATH environment variable
No package 'gstreamer-audio-0.10' found
Package gstreamer-video-0.10 was not found in the pkg-config search path.
Perhaps you should add the directory containing `gstreamer-video-0.10.pc'
to the PKG_CONFIG_PATH environment variable
No package 'gstreamer-video-0.10' found
  Reading /opt/qt-mobility-src-1.0.0-tp2/plugins/multimedia/m3u/m3u.pro
  Reading /opt/qt-mobility-src-1.0.0-tp2/plugins/multimedia/audiocapture/audiocapture.pro
  Reading /opt/qt-mobility-src-1.0.0-tp2/plugins/multimedia/v4l/v4l.pro
Reading /opt/qt-mobility-src-1.0.0-tp2/doc/doc.pro
 Reading /opt/qt-mobility-src-1.0.0-tp2/doc/src/snippets/snippets.pro
  Reading /opt/qt-mobility-src-1.0.0-tp2/doc/src/snippets/qtcontactsdocsample/qtcontactsdocsample.pro

configure has finished. You may run make or gmake to build the project now.

11. Run: sudo checkinstall
    If you can't or don't want to use checkinstall, do:
    
    
    

    $ make
    $ make install
    

    
    
    
12. Be very patient (again!)

I'm having unexpected unpleasant surprise here, the build stops early with an error:

g++ -c -pipe -g -fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -D_REENTRANT -fPIC -DQT_BUILD_CFW_LIB -DQT_MAKEDLL -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/local/Trolltech/Qt-4.6.0/mkspecs/linux-g++ -I. -I/usr/local/Trolltech/Qt-4.6.0/include/QtCore -I/usr/local/Trolltech/Qt-4.6.0/include/QtNetwork -I/usr/local/Trolltech/Qt-4.6.0/include -I../global -I../../build/Debug/QtPublishSubscribe/moc -o ../../build/Debug/QtPublishSubscribe/qmallocpool.o qmallocpool.cpp
In file included from qmallocpool.cpp:64:
dlmalloc.c: In function ‘void QtMobility::dlmalloc_stats()’:
dlmalloc.c:4725: error: cannot convert ‘QtMobility::_IO_FILE*’ to ‘FILE*’ for argument ‘1’ to ‘int QtMobility::fprintf(FILE*, const char*, ...)’
dlmalloc.c:4727: error: cannot convert ‘QtMobility::_IO_FILE*’ to ‘FILE*’ for argument ‘1’ to ‘int QtMobility::fprintf(FILE*, const char*, ...)’
dlmalloc.c:4729: error: cannot convert ‘QtMobility::_IO_FILE*’ to ‘FILE*’ for argument ‘1’ to ‘int QtMobility::fprintf(FILE*, const char*, ...)’
make[2]: *** [../../build/Debug/QtPublishSubscribe/qmallocpool.o] Error 1
make[2]: Leaving directory `/opt/qt-mobility-src-1.0.0-tp2/src/publishsubscribe'
make[1]: *** [sub-publishsubscribe-make_default] Error 2
make[1]: Leaving directory `/opt/qt-mobility-src-1.0.0-tp2/src'
make: *** [sub-src-make_default-ordered] Error 2 

This is a known Qt Mobility bug with GCC 4.4, which Ubuntu 9.10 uses by default.

To solve this problem, install gcc-4.3 package and g++-4.3 package. Update the symlinks too:

$ sudo ln -sf gcc-4.3 /usr/bin/gcc
$ sudo ln -sf g++-4.3 /usr/bin/g++

Update: Even with GCC / G++ 4.3, I still experience yet another problem:

g++ -c -pipe -g -fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -D_REENTRANT -fPIC -DQT_BUILD_SYSINFO_LIB -DQT_MAKEDLL -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/local/Trolltech/Qt-4.6.0/mkspecs/linux-g++ -I. -I/usr/local/Trolltech/Qt-4.6.0/include/QtCore -I/usr/local/Trolltech/Qt-4.6.0/include/QtNetwork -I/usr/local/Trolltech/Qt-4.6.0/include/QtGui -I/usr/local/Trolltech/Qt-4.6.0/include -I../global -I../../build/Debug/QtSystemInfo/moc -o ../../build/Debug/QtSystemInfo/qsysteminfo_linux.o qsysteminfo_linux.cpp
qsysteminfo_linux.cpp: In member function ‘void QtMobility::QSystemStorageInfoPrivate::mountEntries()’:
qsysteminfo_linux.cpp:1370: warning: comparison between signed and unsigned integer expressions
In file included from qsysteminfo_linux.cpp:2073:
../../build/Debug/QtSystemInfo/moc/moc_qsysteminfo_linux_p.cpp: In member function ‘bool QtMobility::QSystemScreenSaverPrivate::isScreenSaverActive()’:
../../build/Debug/QtSystemInfo/moc/moc_qsysteminfo_linux_p.cpp:47: error: invalid use of qualified-name ‘QtMobility::QSystemInfoPrivate::staticMetaObject’
../../build/Debug/QtSystemInfo/moc/moc_qsysteminfo_linux_p.cpp:57: error: a function-definition is not allowed here before ‘{’ token
../../build/Debug/QtSystemInfo/moc/moc_qsysteminfo_linux_p.cpp:62: error: a function-definition is not allowed here before ‘{’ token
../../build/Debug/QtSystemInfo/moc/moc_qsysteminfo_linux_p.cpp:70: error: a function-definition is not allowed here before ‘{’ token
qsysteminfo_linux.cpp:2075: error: expected `}' at end of input
qsysteminfo_linux.cpp: At global scope:
qsysteminfo_linux.cpp:2075: error: expected `}' at end of input
make[2]: *** [../../build/Debug/QtSystemInfo/qsysteminfo_linux.o] Error 1
make[2]: Leaving directory `/opt/qt-mobility-src-1.0.0-tp2/src/systeminfo'
make[1]: *** [sub-systeminfo-install_subtargets] Error 2
make[1]: Leaving directory `/opt/qt-mobility-src-1.0.0-tp2/src'
make: *** [sub-src-install_subtargets-ordered] Error 2 

I reported this to Qt as bug QTMOBILITY-46. Hopefully it gets resolved soon, or a workaround is provided.

Update: I got word from Lorn Potter from Nokia/TrollTech/Qt. To patch it, run:

patch src/systeminfo/qsysteminfo_linux.cpp

then paste in:

diff --git a/src/systeminfo/qsysteminfo_linux.cpp
b/src/systeminfo/qsysteminfo_linux.cpp
index f795c4f..e0d1a4b 100644
--- a/src/systeminfo/qsysteminfo_linux.cpp
+++ b/src/systeminfo/qsysteminfo_linux.cpp
@@ -2065,8 +2065,8 @@ bool QSystemScreenSaverPrivate::isScreenSaverActive()
                 return reply.value();
             }
         }
-    }
 #endif
+    }
     return false;
 }

and press Ctrl+D.

After doing the above, I have successfully compiled Qt Mobility 1.0 TP2. Yaay!

Now you should add add /opt/qt-mobility-src-1.0.0-tp2/lib folder to your LD_LIBRARY_PATH environment variable.

To add Qt Mobility documentation in Qt Creator: Go to Tools -> Options -> Help -> Add. Then browse /opt/qt-mobility-src-1.0.0-tp2/doc/qch/qtmobility.qch.

See also:

• Installing Qt Mobility Libraries on Windows 7
  
• Installing Qt Mobility for Symbian on Windows by Kashif Khan