According to QUIP-18 [1], all build system files should be BSD-3-Clause [1]: https://contribute.qt-project.org/quips/18 Pick-to: 6.7 Task-number: QTBUG-121787 Change-Id: I06880d91e4c6f8d7a92d249f3d216b2bc82fdeed Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>