CMake/Tests/RunCMake/CXXModules/NoCXX20ModuleFlag-stderr.txt

CMake Warning \(dev\) at NoCXX20ModuleFlag.cmake:4 \(target_sources\):
  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:6 \(include\)
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Error in CMakeLists.txt:
  The "noexperimentalflag" target has C\+\+ module sources but its experimental
  support has not been requested

(
CMake Error in CMakeLists.txt:
(  The "noexperimentalflag" target has C\+\+ module sources but its experimental
  support has not been requested
|  The "noexperimentalflag" target contains C\+\+ module sources which are not
  supported by the generator
)
)*
CMake Generate step failed.  Build files cannot be regenerated correctly.