/usr/lib/ is in libkf5config-dev 5.18.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/KF5Config/
/usr/lib/x86_64-linux-gnu/cmake/KF5Config/KF5ConfigConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5Config/KF5ConfigMacros.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5Config/KF5ConfigConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5Config/KF5ConfigTargets.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5Config/KF5ConfigTargets-debian.cmake
/usr/lib/x86_64-linux-gnu/qt5/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/qt_KConfigCore.pri
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/qt_KConfigGui.pri
/usr/lib/x86_64-linux-gnu/libKF5ConfigCore.so
/usr/lib/x86_64-linux-gnu/libKF5ConfigGui.so