Installation and Deployment

I've executed the command "export DYLD_PRINT_LIBRARIES=1" and as I can see, if I open the executable from terminal, it loads file from app bundle but if I use the "open" command to run the bundle, it loads file from "/System/Library", is this behaviors correct? Edit: Ok... After some tests with an empty app I found where the problem is. I got a class that make use a new thread for each object to execute a method, setting this thread as "static" have solved the problem. Could it be a problem related to an high amount of thread that are created? How can I solve this?

Thank you, I didn't notice I had different versions!

The default branch when you clone Qt is the dev branch which is for Qt 6 currently.

@John-M-T Duplicate post of your https://forum.qt.io/topic/134114/error-when-launching-rqt.

Hi, One other possible way is to set the QT_QPA_PLATFORM environment variable.

Hi, Just an educated guess: order of the folders in the PATH environment variable that made the wrong dll found before the correct one.

Hi @Grimface, Maintenance Tool exists to make things easy without any need to compile Qt from source. That's the way I've always done it and it should be an easy experience. Can I check which checkbox you ticked? There's one at the top under Additional Libraries at top level [image: 9bc80cf7-d785-4159-982e-253fd32ff8fe.png] and one within Additional Libraries within the Qt build you're installing. [image: de441e04-808c-4159-abea-98e47eb6c2fe.png] I haven't used QtCharts myself, but I use QtMultimedia which is another additional library and I've had no problem installing that by ticking the latter one only.

@jsulm I change the name of libxcb.so to libxcb.so1 it still loaded. and get the same error. I remove the libxcb.so file in /home/lizhe/.local/lib/python3.10/site-packages/cv2/qt/plugins. Everything seems works fine now. Thank you. Here is the output: echo $PATH /home/lizhe/Applications/Clash /home/lizhe/Applications/Clion/bin /home/lizhe/OriNote/linuxConfig/CommonScripts /home/lizhe/Applications /home/lizhe/.local/bin/ /home/lizhe/OriNote/wikiScripts /home/lizhe/.yarn/bin/ /home/lizhe/Applications/VSCode/ /home/lizhe/Applications/clion-2021.3.2/bin /home/lizhe/Applications/pycharm-2021.3.1/bin/ /home/lizhe/OriNote/wikiScripts/Utils /home/lizhe/OriNote/wikiScripts /home/lizhe/Applications/Clash /home/lizhe/Applications/Clion/bin /home/lizhe/OriNote/linuxConfig/CommonScripts /home/lizhe/Applications /home/lizhe/.local/bin/ /home/lizhe/OriNote/wikiScripts /home/lizhe/.yarn/bin/ /home/lizhe/Applications/VSCode/ /home/lizhe/Applications/clion-2021.3.2/bin /home/lizhe/Applications/pycharm-2021.3.1/bin/ /home/lizhe/OriNote/wikiScripts/Utils /home/lizhe/OriNote/wikiScripts /usr/local/sbin /usr/local/bin /usr/bin /usr/bin/site_perl /usr/bin/vendor_perl /usr/bin/core_perl /var/lib/snapd/snap/bin

On a fresh windows everything works fine. I think i have to reinstall my Os

Ah yes, that's it, it is working now. Thank you all very much for your help! :)

After a lot of head scratching I found that if I install from a mirror as documented at https://wiki.qt.io/Online_Installer_4.x#Selecting_a_mirror_for_opensource then the installation worked perfectly well. Is the file on the default server corrupted or something? Anyway, I hope someone finds this useful if they have a similar problem.

FOUND IT: in CMake set_target_properties I added the line: WIN32_EXECUTABLE true couldn't have found it without knowing it was a terminal window. Thank you.

Ugrade to a recent Qt version or apply this fix: https://code.qt.io/cgit/qt/qtbase.git/commit/src/corelib/text/qanystringview.h?id=813a928c7c3cf98670b6043149880ed5c955efb9 If you do not want to upgrade you should take a look at https://bugreports.qt.io/browse/QTBUG-89977 - there are other fixes for gcc11

@MarkOne Try to disable anti virus software

@sierdzio I guess I was short sighted after a booster shot. I thought the submodules should be in a separate category but they were not. They were in the installer. Thank you for your answer!

LoL, I already solved it. And this is how I solved the issue. My PATH is clean and nice, however, my cmd's AutoRun is a mess. I tried deleting everything in AutoRun (HKCU\SOFTWARE\Microsoft\Command Processor\AutoRun or HKLM\SOFTWARE\Microsoft\Command Processor\AutoRun) for testing and Qt was able to build fine. My AutoRun is messy because I integrated cmder into cmd but didn't follow the author's guide. I stuffed a long script into AutoRun (without creating a separate 'cmder_shell.bat' file) and it was working fine before I started using Qt. And now I see the above issue I mentioned. Hope my stupid experience helps those who face similar issue to have more solutions. For those who use cmder integrated into cmd please follow the author's guide, don't be like me.

You can also get Qt Creator 6 builds with Qt5 at https://download.qt.io/snapshots/qtcreator_qt5/6.0/ You don't have to get stuck with Qt Creator 5 :)