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Qt 5.0.1 and glext.h

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  • K Offline
    K Offline
    kmt11
    wrote on last edited by
    #7

    Thank you for your offer. Seems to be up and running on Mac, after having downloaded multi-Gb to update the OS and update xcode.

    Qt Demo examples compile and run, but a ported project is failing to find GL/gl.h, GL/glext.h, etc.

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #8

      Do you have QT += opengl in your pro file ?

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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      • K Offline
        K Offline
        kmt11
        wrote on last edited by
        #9

        Yes, most certainly

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        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #10

          Is it a simple project ? (Meaning one pro file for all)

          If not check that every other project that uses these class also includes opengl

          Interested in AI ? www.idiap.ch
          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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          • K Offline
            K Offline
            kmt11
            wrote on last edited by
            #11

            It is one pro file only.

            I now notice that, if I try #include <QtOpenGL>, I get "library not found for -IGLU", if that helps.

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            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #12

              I think I found out the first problem (must be sleepy to have been so long...):

              on mac you have to:

              @#include <OpenGL/gl.h>@

              That is: framework_name/filename.h

              You can surround that with

              @#ifdef Q_OS_MACX
              #include <OpenGL/gl.h>
              #else
              #include <GL/gl.h>
              #endif@

              Interested in AI ? www.idiap.ch
              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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              • K Offline
                K Offline
                kmt11
                wrote on last edited by
                #13

                Thank you. That seems to have fixed it.

                Now builds with no errors.

                The app runs perfectly. Brilliant. You've made my day.

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                • SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #14

                  You're welcome !

                  Don't forget to update your thread's title to solved so other forum users may know that a solution has been found :)

                  Interested in AI ? www.idiap.ch
                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                  • K Offline
                    K Offline
                    kmt11
                    wrote on last edited by
                    #15

                    well, the original QT 5 on Windows and glext.h problem isn't solved....

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                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #16

                      IIRC, there's no glext.h by default on windows. But you can get the file "here":http://www.opengl.org/registry/

                      Interested in AI ? www.idiap.ch
                      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                      • K Offline
                        K Offline
                        kmt11
                        wrote on last edited by
                        #17

                        Got the file thanks. Throwing up an error, but that may be down to internal programming, so will look into that and report back.....

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                        • K Offline
                          K Offline
                          kmt11
                          wrote on last edited by
                          #18

                          Seems that trying to use glext.h throws up dozens of errors, and it's simply too much of a pain to sort this. I have to conclude that legacy opengl cannot be used with Qt 5.
                          Tried reverting to Qt Creator 2.7.1 and Qt 4.8.4 on Windows, but this just refuses to configure a project, and ignores anything set up in the kit options.
                          Qt 4.8 seems to be fine on Mac and a unix box, but Qt 5 has too many problems for us to think about using it as a future ipad app tool. If it has too many problems on Windows, it gives us no confidence that it will be safe for ios development.

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                          • SGaistS Offline
                            SGaistS Offline
                            SGaist
                            Lifetime Qt Champion
                            wrote on last edited by
                            #19

                            There must be a glitch in QtCreator's configuration.
                            4.8.4 works pretty well on windows (even custom builds)

                            Depending on your problem, you might consider contacting Digia to sort things out

                            Interested in AI ? www.idiap.ch
                            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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