Also please do not ignore that using `KDEFrameworkCompilerSettings` when requiring ECM >= 5.85 is not supported outside from KDE Frameworks modules. Things had been kept working so far, due to the existing repurposing of `KDEFrameworkCompilerSettings` outside of KDE Frameworks modules. The warning on https://api.kde.org/ecm/kde-module/KDEFrameworkCompilerSettings.html is for a reason, allow me to cite it here: > Warning: Do not use this module for software which is not part of KDE-Frameworks. There is no guarantee for backward-compatibility in newer versions. Now we have the settings levels in KDECompilerSettings to achieve the same goal, and there is no more reason for the repurposing of `KDEFrameworkCompilerSettings` over using the supported and documented official way. Please read again https://marc.info/?l=kde-devel&m=162893561025502&w=2 things there are not just meant as recommendation.