^CMake Warning \(dev\) at FileSetWrongTypeExperimental.cmake:6 \(target_sources\):
  CMake's C\+\+ module support is experimental.  It is meant only for
  experimentation and feedback to CMake developers.
Call Stack \(most recent call first\):
  CMakeLists.txt:3 \(include\)
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Error at FileSetWrongTypeExperimental\.cmake:[0-9]+ \(target_sources\):
  target_sources File set TYPE may only be "HEADERS" or "CXX_MODULES"
Call Stack \(most recent call first\):
  CMakeLists\.txt:[0-9]+ \(include\)$