^CMake Error at TARGET_GENEX_EVAL-non-valid-target\.cmake:2 \(add_custom_command\):
  Error evaluating generator expression:

    \$<TARGET_GENEX_EVAL:bad-target,>

  \$<TARGET_GENEX_EVAL:tgt, \.\.\.> target "bad-target" not found\.
Call Stack \(most recent call first\):
  CMakeLists\.txt:3 \(include\)
