CMake/Tests/RunCMake/add_subdirectory/DoesNotExist-stderr.txt

^CMake Error at DoesNotExist.cmake:1 \(add_subdirectory\):
  add_subdirectory given source "DoesNotExist" which is not an existing
  directory.
Call Stack \(most recent call first\):
  CMakeLists.txt:3 \(include\)$