/usr/lib/x86_64-linux-gnu/cmake/ is in qtdeclarative5-dev 5.5.1-2ubuntu6.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/cmake/Qt5Qml/
/usr/lib/x86_64-linux-gnu/cmake/Qt5Qml/Qt5QmlConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/Qt5Qml/Qt5QmlConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/cmake/Qt5Qml/Qt5Qml_QTcpServerConnection.cmake
/usr/lib/x86_64-linux-gnu/cmake/Qt5Quick/
/usr/lib/x86_64-linux-gnu/cmake/Qt5Quick/Qt5QuickConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/Qt5Quick/Qt5QuickConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/cmake/Qt5QuickTest/
/usr/lib/x86_64-linux-gnu/cmake/Qt5QuickTest/Qt5QuickTestConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/Qt5QuickTest/Qt5QuickTestConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/cmake/Qt5QuickWidgets/
/usr/lib/x86_64-linux-gnu/cmake/Qt5QuickWidgets/Qt5QuickWidgetsConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/Qt5QuickWidgets/Qt5QuickWidgetsConfigVersion.cmake