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Just open QtCreator via a Terminal with root permissions; it worked for me. sudo qtcreator


Solved the problem using this solution http://ubuntuforums.org/showthread.php?t=2207219&p=13048000#post13048000


After discussing in chat with Timur Fayzrakhmanov and Mateo (here), Timur Fayzrakhmanov managed to install Ubuntu-SDK. The problem was with that some packages was not getting authenticated, which was causing dependency problem. I thank to Mateo for helping in the chat.


To fix installing the SDK first install ubuntu-sdk-libs-dev sudo apt-get update sudo apt-get install ubuntu-sdk-libs-dev Then install the sdk: sudo apt-get install ubuntu-sdk


You should first of all download libqt5keychain and qtkeychain-dev packages in order to resume mirall compilation. Use the wget command for each of these urls (it depends on your system architecture): wget http://hr.archive.ubuntu.com/ubuntu/pool/universe/q/qtkeychain/libqt5keychain0_0.3.0-2_amd64.deb wget ...


The OP solved the problem by installing build-essential. To install it just type the following command. sudo apt-get install build-essential


you need to add multimediawidgets to your QT variable in your project file: QT += multimediawidgets Note that Phonon no longer exists in Qt 5. Use the Multimedia module instead

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