In our context, this is not the right fix.
When OBS is built with Qt 6.9 or later, GuiPrivate is normally completely unused.

In our context, this is not the right fix. When OBS is built with Qt 6.9 or later, GuiPrivate is normally completely unused.

I see.

The CMake formatting check is failing.

If OBS Studio itself does not use Qt6GuiPrivate, then I'm not convinced we need to merge this change.

The CMake formatting check is failing.

Noticed, but I didn't get into guessing what it isn't happy about yet exactly, as there seem to be no hints at all in the log, and that's probably not even necessary if this is not the correct way to fix the build.

If OBS Studio itself does not use Qt6GuiPrivate, then I'm not convinced we need to merge this change.

If it's not the proper way to go, certainly not, but the build failure will still be there.

At this time, as an alternative, I can only think of removing the link target if it's indeed unused, and a quick test shows that things do seem to at least compile if they are removed in the cmake files referenced to in the error messages:

CMake Error at frontend/cmake/os-linux.cmake:6 (target_link_libraries):
  Target "obs-studio" links to:

    Qt::GuiPrivate

  but the target was not found.  Possible reasons include:

    * There is a typo in the target name.
    * A find_package call is missing for an IMPORTED target.
    * An ALIAS target is missing.

Call Stack (most recent call first):
  frontend/CMakeLists.txt:81 (include)


CMake Error at frontend/plugins/frontend-tools/CMakeLists.txt:57 (target_link_libraries):
  Target "frontend-tools" links to:

    Qt::GuiPrivate

  but the target was not found.  Possible reasons include:

    * There is a typo in the target name.
    * A find_package call is missing for an IMPORTED target.
    * An ALIAS target is missing.

@Chiitoo #12328

Closing in favour of #12328