^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 \(include\)