I spent almost the whole day trying to get the above working.
I tried qt directly from the linked URL:
Qt 5.6.2 for Linux 64-bit (653 MB)
Qt Creator 4.4.0 for Linux 64-bit (120 MB)
Qt Online Installer for Linux 64-bit (31 MB).
All of them did not work. The first was best, it managed to load sources from the examples. Yes, I ran the installer scripts of OF and QT.
Now it is complaning about
_ Fehler: Cannot lock build graph file ‘/gamez/Dokumente/Programmieren/of_v0.9.8_linux64_release/examples/video/build-videoGrabberExample-Desktop_Qt_5_6_2_GCC_64bit-Debug/qtc_Desktop__4164e6e4-debug/qtc_Desktop__4164e6e4-debug.bg’: Already locked by ‘QtCreator’ (PID 6590).
This file does not exist. I have 755-rights in the whole of-directory.
BTW: OF-documentation states that OF works only with QTcreator 4.1.0. In QT 5.6.2 there is QTcreator 4.0.3. The 4.4.0 creator does not work at all and the old versions on the QT site end with 2.6.
edit: I also needed a “sudo apt install qt4-qmake” to get rid of some error messages. Interestingly, “sudo apt install qt5-qmake” did not help, although QT version is 5.6.2.
Any suggestions to get this running?