Downloaded this: http://get.qt.nokia.com/qt/add-ons/qt-mobility-opensource-src-1.2.0.tar.gz

Extracted it.

% ./configure -qmake-exec /home/chakie/opt/qt-4.7.4/bin/qmake -prefix home/chakie/opt/qt-mobility-opensource-1.2.0 -modules multimedia
Use of uninitialized value $resolvedpath in concatenation (.) or string at /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/bin/pathhelper line 50.
Configuring Qt Mobility

Checking available Qt ... 4.7.4
Checking QMF ... Not Found
Checking NetworkManager ... OK
Checking CoreWLAN (MacOS >= 10.6) ... Not Found
Checking Immersion ... Not Found
Checking MeegoTouch Feedback ... Not Found
Checking Maemo ICD ... Not Found
Checking Maemo ICD WLAN ... Not Found
Checking Maemo5 contacts dependencies ... Not Found
Checking Maemo5 organizer dependencies ... Not Found
Checking Maemo6 landmarks dependencies ... Not Found
Checking Maemo Battery Managment Entity ... Not Found
Checking Bluez ... OK
Checking Proj.4 ... Not Found
Checking Gstreamer Photography ... Not Found
Checking Gstreamer AppSrc ... OK
Checking Blkid ... Not Found
Checking Pulse Audio ... OK
Checking udev ... Not Found
Checking Maemo Heartbeat ... Not Found
Checking Symbian NFC ... Not Found
Generating Mobility Headers...
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMobility/QLatin1Constant
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QGraphicsVideoItem
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaResource
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaBindableInterface
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QVideoWidgetControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QRadioTuner
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaPlaylistReader
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaPlaylistWriter
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaPlaylistIOPlugin
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaService
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QAudioEncoderSettings
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QVideoEncoderSettings
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QImageEncoderSettings
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QVideoDeviceControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QCameraImageProcessingControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaNetworkAccessControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaPlaylistNavigator
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMetaDataWriterControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaStreamsControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaPlaylistSourceControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaRecorder
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaPlaylistControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QCameraImageCaptureControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QCamera
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaPlaylistProvider
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QImageEncoderControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaRecorderControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QRadioTunerControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QAudioCaptureSource
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QCameraExposureControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QCameraCaptureBufferFormatControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QLocalMediaPlaylistProvider
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaPlaylist
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QCameraCaptureDestinationControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QCameraExposure
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaServiceProviderHint
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaServiceProvider
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QCameraViewfinder
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QCameraFocusZone
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QCameraFocus
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QVideoWindowControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QCameraImageCapture
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaPlayer
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QVideoEncoderControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMetaDataReaderControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaContent
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QVideoWidget
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaObject
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaPlayerControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QVideoRendererControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaImageViewer
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QAudioEncoderControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QCameraControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QCameraLocksControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaTimeInterval
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaTimeRange
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaServiceProviderPlugin
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QAudioEndpointSelector
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QCameraImageProcessing
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QCameraFocusControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaContainerControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QCameraFlashControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QMediaControl
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QAudioSystemPlugin
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QAudioOutput
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QAbstractAudioDeviceInfo
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QAbstractAudioOutput
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QAbstractAudioInput
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QAudioDeviceInfo
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QAudioFormat
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QAudio
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QAudioInput
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QAbstractVideoBuffer
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QVideoSurfaceFormat
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QVideoFrame
Create header /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/include/QtMultimediaKit/QAbstractVideoSurface
Running /home/chakie/opt/qt-4.7.4/bin/qmake...
Reading /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/src/src.pro
Reading /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/src/global/global.pro
Reading /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/src/multimedia/multimedia.pro
Reading /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/tools/tools.pro
Reading /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/plugins/plugins.pro
Reading /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/plugins/multimedia/multimedia.pro
Reading /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/plugins/multimedia/m3u/m3u.pro
Reading /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/plugins/multimedia/gstreamer/gstreamer.pro
Reading /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/plugins/multimedia/v4l/v4l.pro
Reading /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/plugins/multimedia/pulseaudio/pulseaudio.pro
Reading /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/plugins/declarative/declarative.pro
Reading /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/plugins/declarative/multimedia/multimedia.pro
Reading /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/doc/doc.pro
Reading /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/doc/src/snippets/snippets.pro
Reading /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/doc/src/snippets/multimedia-snippets/multimedia-snippets.pro
Reading /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/translations/translations.pro

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

QT_MOBILITY_PREFIX =
QT_MOBILITY_INCLUDE = /include
QT_MOBILITY_LIB = /lib
QT_MOBILITY_BIN = /bin
QT_MOBILITY_PLUGINS = /plugins
QT_MOBILITY_EXAMPLES = /bin
QT_MOBILITY_DEMOS = /bin

These last paths are obviously wrong and seem to lack the proper prefix. The clue is likely this line that shows up directly after the configure line:

Use of uninitialized value $resolvedpath in concatenation (.) or string at /home/chakie/download/carrot/qt-mobility-opensource-src-1.2.0/bin/pathhelper line 50.