Failed install on openSUSE Tumbleweed because of missing and old library

[Dirk Hohndel]

> On May 12, 2022, at 5:44 AM, Guillaume wrote:
> 
>> 
>> It seems Qt6 (without webkit) is supported, but it will disable printing and manual. I will try to enable Qt6 builds for Tumbleweed.

Qt6 support is marked 'experimental' for good reasons.

Qt6 doesn't ship with QtWebKit or QtLocation.

Which means no printing, no maps.

That really isn't a useful user experience. Which is why we have a couple of test builds that play with this, but absolutely DO NOT RECOMMEND using this as end users. So no, please do not suggest Qt6 builds to anyone but developers trying to fix the remaining bugs and reworking the printing code to no longer require QtWebKit (which is insanely painful because of odd race conditions in the way things are rendered in WebEngine).

I have built QtLocation against Qt 6.3 (which has a bunch of bugs, still, and is still being rewritten - it's not clear this will even make it into Qt 6.4), done some quick hacks for our map plugin, and as I mentioned there are some occasional efforts to move printing to a different software stack - but for the end user that really is a long, long time away from being useful.

> It currently fails with:
> [   69s] -- Could NOT find Qt6WebKitWidgets (missing: Qt6WebKitWidgets_DIR)
> [   69s] CMake Error at CMakeLists.txt:321 (find_package):
> [   69s]   Found package configuration file:
> [   69s] 
> [   69s]     /usr/lib64/cmake/Qt6/Qt6Config.cmake
> [   69s] 
> [   69s]   but it set Qt6_FOUND to FALSE so package "Qt6" is considered to be NOT
> [   69s]   FOUND.  Reason given by package:
> [   69s] 
> [   69s]   Failed to find Qt component "WebKitWidgets".
> [   69s] 
> [   69s]   Expected Config file at
> [   69s]   "/usr/lib64/cmake/Qt6WebKitWidgets/Qt6WebKitWidgetsConfig.cmake" does NOT
> [   69s]   exist
> 
> Whereas WebKitWidgets should not be used here, since we use Qt6.
> Any idea?

It should set printing to false and therefore not require WebKit, but since this is all experimental, this may not have been tested outside of two specific implementations (I test the preliminary Qt6 builds on Fedora 35 (without maps) and on macOS 12.3)

> Also, the googlemaps part seems to still use qt5.

Googlemaps isn't compatible with Qt6. I have some hacky patches that I use in my macOS builds, but those need to be cleaned up before I can send them upstream...

/D

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