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]+ \(include\)
