CMake Error at COMPILE_ONLY-not-compiling.cmake:1 \(add_custom_target\):
  Error evaluating generator expression:

    \$<COMPILE_ONLY:something>

  \$<COMPILE_ONLY:...> may only be used for linking
Call Stack \(most recent call first\):
  CMakeLists.txt:[0-9]+ \(include\)
