What Qt specific files exactly do I need to add when deploying?

Creaperdown

I am trying linuxdeployqt on 20.04 and it works fine up to the point where I tells me the following:

Does someone have an idea what the issue is?

JoeCFD

@Creaperdown The message is clear: libqsqlmimer.so is not installed. Did you install sql module? I have it in my installation.

jsulm

@JoeCFD said in What Qt specific files exactly do I need to add when deploying?:

libqsqlmimer.so is not installed

It is installed. Not installed is its dependency (libmimerapi.so).

Creaperdown

@jsulm but it is not listed in ldd ./myApp and my application works just fine without it. Why do I need it?

jsulm

@Creaperdown Is it possible that you added qt sql module in your pro or CMakeLists.txt file?

JoeCFD

@Creaperdown plugin is different from so although both are libs. Sos are linked to your app and ldd can see all of them. Plugins are loaded from a fixed path at running time and are not exposed to ldd.

it is the harder part to deploy your plugins at the right spot or do not forget to set the path for your app to load them.

Creaperdown

@Creaperdown Not explicitly, these are all qt modules I use:

find_package(Qt6 6.5 REQUIRED COMPONENTS Core Quick Widgets Network Gui QuickControls2 Test)

jsulm

@Creaperdown Strange. Maybe there is an issue with linuxdeployqt and Qt 6.6

Creaperdown

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Creaperdown

@jsulm I cant find an sql module to download from the online installer. Is there a way to fix this? I can not find the libmimerapi.so file in the ubuntu repos either.

JoeCFD

@Creaperdown As jsulm said, it could be a bug in the tool since you do not use sql. The tool tries to wrap all plugins.

https://doc.qt.io/qt-6/sql-driver.html
https://doc.qt.io/qt-6/qtsql-index.html

Creaperdown

@JoeCFD I have searched through my source directory again and couldn't find any mention of sql, but I found the following:

Could it be possible that this causes the issue?

tanjoe

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Volker75

Hallo, I am also running into the issue of "[qt/stdout] ERROR: Could not find dependency: libmimerapi.so".
Well, I am using SQL in my Qt project and it is running fine. But I also can't fine a file "libmimerapi.so" on my hard disk.
Anyone solved this problem already?

JonB

@Volker75
https://github.com/linuxdeploy/linuxdeploy-plugin-qt/issues/150

For some reason, linuxdeploy-plugin-qt started deploying the Qt6Sql module even though I do not use SQL anywhere in my project. This would not be a problem normally, but also if I run the linuxdeploy twice it fails on the second run because it is unable to locate libmimerapi.so

Something in your bundle must link to Qt6Sql. That's the only reason why this plugin would start shipping those files

Volker75

@JonB hmm... not sure if that helps me, because I AM USING SQL. I can't skip that. I need SQL in my Qt project. And SQL is running fine if I run my application, but I can't deploy.
Thank you for the link. I will observe it.

Christian Ehrlicher

@Volker75 If you don't need mimersql plugin then remove this sql plugin (the .so file) and try again. Does linuxdeployqt works then as expected?

Volker75

@Christian-Ehrlicher Good question. I am using mySQL und SQLite. I just deleted the mimersql from the Qt folder and now linuxdeploy run into the next missing one:
[qt/stdout] ERROR: Could not find dependency: libQt6SerialPort.so.6

I am not using SerialPort stuff and I didn't added that in my project file.
hmm...
Ok, I will delete that also or try the new Qt 6.7 beta. I will let you know more later.

Christian Ehrlicher

@Volker75 said in What Qt specific files exactly do I need to add when deploying?:

I am not using SerialPort stuff and I didn't added that in my project file.

I would guess you link against it somewhere. Please take a look with ldd which dependencies your executable has.

Volker75

@Christian-Ehrlicher No, I am not using the serial stuff. It wasn't even installed, so I wasn't able to delete it.

I installed Qt 6.7.0 and also added that serial plugin. Now it finished the linuxdeploy. :-)

I will try without the serial plugin tomorrow, since i didn't add that in the project file and it is also not visible with "ldd". So it should work without.

Thank you for your help.
Have a nice weekend.