Windows Deployment

[TheCipo76]

Hi to all,
i've created an application that works correctly and connecting to remote mysql database (Windows 10)
i've deployed my application following this step:

cd .. app exe file path..
windeployqt . --quick --no-translation
(i've also tried with --compiler-runtime option but with same result..)

on my pc work fine but when i copy the app folder to another pc
application run correctly but give me "Drivers not loaded" error

the dll seems to be ok (i've checked the dependency but everything is ok)

Any ideas?
Thanks in advance

[jsulm]

@TheCipo76 said in Windows Deployment:

"Drivers not loaded" error

Can you be more specific? What drivers?
Is it about MySQL plug-in loading? If so, did you also deploy the MySQL client library?

[TheCipo76]

@jsulm Yes MySql drivers

how i can deploy MySql client library? with windeploy --includeplugins <> option??

[Christian Ehrlicher]

Windeploy can't help here. You have to do it manually.

[TheCipo76]

@Christian-Ehrlicher how can i do it? can you help me with an example?

[jsulm]

@TheCipo76 Just copy the MySQL client library next to your executable

[TheCipo76]

@jsulm you mean "mysqlclient.lib"?

[jsulm]

yes, that one

[Christian Ehrlicher]

@TheCipo76 said in Windows Deployment:

mysqlclient.lib

This is not a dll so what do you want with this?
RTM: https://doc.qt.io/qt-6/sql-driver.html#qmysql

[TheCipo76]

This post is deleted!

[TheCipo76]

@Christian-Ehrlicher i don't know.. i'm just following @jsulm

This is app folder

and this is sqldrivers folder

[jsulm]

@TheCipo76 Sorry, didn't realized you posted lib, of course you need to deploy dll. lib is for linking, not running.

[TheCipo76]

@jsulm no problem.. you are helping me and i appreciate it ;)

how can i deploy it?

[jsulm]

@TheCipo76 You just copy it to your deployed application folder

[TheCipo76]

@jsulm i've searched mysqlclient.dll but i have none with this name
i've only mysqlclient.lib

[Bonnie]

It should be libmysql.dll. You already have it in your sqldrivers folder, move it to the app folder.
Also, where does this dll file come from? If it is from mysql package there is a chance that it also need msvc and openssl runtime to load.
If you still cannot load the plugin, you need to check that with DependencyWalker

[aha_1980]

@Bonnie Unfortunately Dependency Walker does not help when the DLL is loaded dynamically at runtime :(

Otherwise you are correct.

Regards

[TheCipo76]

I've removed and reinstalled MySql connector and
re-build the drivers and now all works
Thanks to all

[Bonnie]

@aha_1980 Actually I mean using Dependency Walker to check libmysql.dll :)