Can't build an existing project in Qt creator 2.7.1 on Qt 5.0.2



  • i created a new project in Qt and i was able to build and run it perfectly. I closed Qt and decided to open the now existing project to make some add ons to it. Now i can't build or run the project anymore and the syntax highliting that used to work when i newly created the project isn't working. It's as if no project has been opened in Qt. All the tabs in the menu bar open except "Build". How do i get this to work ?

    P.S.
    I'm running Qt Creator on ubuntu


  • Lifetime Qt Champion

    Hi and welcome to devnet,

    Are you sure it's not Qt 5.2.0 ? If so, Qt Creator 3 is mandatory since 5.2



  • this is what "About Qt Creator" says;

    Qt Creator 2.7.1
    Based on Qt 5.0.2 (64 bit)

    Built on Sep 6 2013 at 08:20:19

    Copyright 2008-2013 Digia Plc. All rights reserved.



  • Ok! i think i figured it out. I should have opened existing project and selected the file with the .pro extension rather. Instead of selecting the ones ending with .cpp


  • Lifetime Qt Champion

    Based on Qt means the Qt version used to build Qt Creator, not the one you are currently using.

    Indeed, you need a project qmake or other in order to build something


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