Add missing variable initialization
Add missing variable initialization

This should fix the following CMake error:
Error required internal CMake variable not set, cmake may be not be built correctly.

tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot