undefined symbol : qt_resourceFeatureZstd

PY Lessard

Hello,
I am trying to build QT in debug to run a PySide application.
I succeeded in building QT and Pyside, I can run demo applications using QtGui and QtCharts from a Python script.

When I try to load a 3rdparty dependecy I need (Pyside6-QtADS 4.4.0), the module fails to load with error "undefined symbol : qt_resourceFeatureZstd". This does not happen with the official release of PySide6, so obviously, there is something I do not build correctly.

I read that it could be a conflict with other installed libs. I cleaned everything else that is related to QT on my machine but without success.

I use Ubuntu22.04. Build with GCC 11.4. I use libclang18.1.7 for PySide.
I build Qt modules (all 6.9.0) : qtbase, qtcharts, qttools, qtdeclarative

Any indication about the cause of this?

Christian Ehrlicher

I would guess you built your Qt without zstd support.

PY Lessard

Maybe?
Will try building with libzstd-dev installed and revert back.
In the meantime, I put my build recipe here

PY Lessard

You guessed correctly!
I simply rebuilt with libzstd-dev installed in my docker image and my app booted properly (except some icons missing.. but that's another issue.)

Thank you!