Generated build info missing if BUILD_DUMMY_GAMELOGIC is changed from 0 to 1

[slipher]

If in an already existing Daemon build directory I configure cmake . -DBUILD_DUMMY_GAMELOGIC=1, the build breaks with this message:

CMake Error at cmake/DaemonGame.cmake:117 (add_library):
  Cannot find source file:

    C:/lang/msys64/home/meh/daemonb32/GeneratedSource/DaemonBuildInfo/Game.cpp

  Tried extensions .c .C .c++ .cc .cpp .cxx .cu .mpp .m .M .mm .ixx .cppm
  .ccm .cxxm .c++m .h .hh .h++ .hm .hpp .hxx .in .txx .f .F .for .f77 .f90
  .f95 .f03 .hip .ispc
Call Stack (most recent call first):
  src/dummygame/CMakeLists.txt:3 (GAMEMODULE)
  CMakeLists.txt:1073 (include)

It doesn't happen if -DBUILD_DUMMY_GAMELOGIC=1 is passed the first time CMake is invoked.

I wish generating gamelogic build info would be optional (configured by gamelogic's build) because dummy gamelogic doesn't use that.