QTCreator 6.0 can't start

cyniu88

cyniu@cyniu-PC:/mnt/f/LINUX-UBUNTU/QT/Tools/QtCreator/bin$ ls -lah
total 1.4M
drwxrwxrwx 1 root root 4.0K Dec  8 19:21 .
drwxrwxrwx 1 root root 4.0K Dec  7 23:10 ..
-rwxrwxrwx 1 root root   66 Dec  8 18:07 find.txt
-rwxrwxrwx 1 root root 388K Dec  1 17:51 qbs
-rwxrwxrwx 1 root root  44K Dec  1 17:51 qbs-config
-rwxrwxrwx 1 root root  53K Dec  1 17:51 qbs-config-ui
-rwxrwxrwx 1 root root  52K Dec  1 17:51 qbs-create-project
-rwxrwxrwx 1 root root  60K Dec  1 17:51 qbs-setup-android
-rwxrwxrwx 1 root root 218K Dec  1 17:51 qbs-setup-qt
-rwxrwxrwx 1 root root 403K Dec  1 17:51 qbs-setup-toolchains
-rwxrwxrwx 1 root root   84 Dec  1 17:52 qt.conf
-rwxrwxrwx 1 root root 110K Dec  1 17:51 qtcreator
-rwxrwxrwx 1 root root 1.4K Dec  8 09:02 qtcreator.sh
cyniu@cyniu-PC:/mnt/f/LINUX-UBUNTU/QT/Tools/QtCreator/bin$

JonB

@cyniu88
Yeah, clearly nothing interesting there then :) Hang on, cat needs feeding....

JonB

@cyniu88
If this were my problem, which it is not, and I wanted to investigate....

Like you, I believe you have shown an acceptable libQt6Core.so.6 does exist in the same location as other libraries it reports as finding successfully. Please triple-check this assumption on your system.

I am guessing the libQt6Core.so.6 => not found line actually means "cannot be loaded successfully", which I believe is what can be reported.

So, I would run ldd on all those other dependencies of qtcreator. Like, is it possible that ldd libQt6Gui.so.6 would reveal a different dependent version of another library required by libQt6Core.so.6? I don't know whether ldd qtcreator's output would tell you that in one go. (Maybe https://sourceforge.net/projects/recursive-ldd/ is useful here?) Test it for a couple of select ones if it's a lot of work, or get creative piping all the output through sort -u or similar :)

Also, do have a look at that https://forum.qt.io/topic/132524/cannot-get-any-query-output-from-executable-opt-qt-6-2-2-gcc_64-bin-qmake I referred you too. Aren't you two the same problem?

JoeCFD

qt creator uses relative path to link all qt libs which come with it. It is possible that there is a bug in the build script of qt creator. LD_LIBRARY_PATH is not used. Therefore, it can not start.

JonB

@cyniu88 I happily hand you over to @JoeCFD :)

JoeCFD

@JonB I have to confirm this when I get home. If it is true, we can file a bug report to Qt.

cyniu88

ok this sounds good, but I don't understand why the problem occurs on WSL on two separate computers, on the third computer with Debian as OS everything works fine? Are the engineers working on QT saving money on testing ? ;)

JoeCFD

@cyniu88 it is software engineering and bugs do exist. Do not complain too much and you may not pay anything to Qt.

cyniu88

Yeah, I know these things. I'm just a little disappointed in what happened.

JoeCFD

@cyniu88 The first thing you need to know, the latest release may not be the best one. I am using 5.1.5.2.

cyniu88

Unfortunately only qtcreator 6.0.0 is available in MaintenanceTool

JoeCFD

@cyniu88 Actually it is good enough for you to use 6.0 qt creator. Install it separately. Also it is not a great idea to use Qt 6.2 for now especially when you are working on some projects.

cyniu88

@JoeCFD said in QTCreator 6.0 can't start:

Actually it is good enough for you to use 6.0 qt creator.

maybe yes, unfortunately qtcreator 6.0 ....

do you plan to install it at your PC and check if you have the same problem as me ?
Are You working for Qt Group?

JoeCFD

Just installed the new ubuntu 22 and Qt 6.2.2 in a virtual machine for a spin. Qt Creator works fine. Since you like new stuff, move on to Qt6.2.2. I have no more interest in Qt6.2.1.

cyniu88

yes on virtual machine it works fine, unfortunately on WSL Ubuntu it does not work

hskoglund

Hi, only Qt6 has problems in WSL Ubuntu, you can use the online Maintenance Tool in WSL to remove Qt6.21 and Qt6.2.2 and instead install Qt 5.15.2 or 5.12.12, they both work fine in WSL Ubuntu.

However since the latest release of Qt Creator (6.0.0) is based on Qt 6 it will not work on WSL Ubuntu. Instead you can you an older version of Qt Creator, for example 5.0.3:
https://download.qt.io/official_releases/qtcreator/5.0/5.0.3/
(almost at the end of the list)
this one is based on Qt5 so it will work fine :-)

cyniu88

Is there any plan to support QT 6 on WSL Ubuntu ?

jsulm

@cyniu88 said in QTCreator 6.0 can't start:

Is there any plan to support QT 6 on WSL Ubuntu ?

This is something to ask on Qt developers mailing list

JoeCFD

@cyniu88 Qt Creator is a stand alone app. It may not matter much if you use Qt5 or Qt6. It is supposed to work for any C++ projects. Try it out to use Qt5 creator for Qt6.

hskoglund

Hi, note that no Qt6 program can run on WSL Ubuntu currently, for example if you build a vanilla widget Hello World app for Qt 6.2.2, it will not start on WSL Ubuntu, you have to build it using Qt 5.15.2 or Qt 5.12.12.
(I have the same problem on Windows 7, only Qt5-based programs will run.)