CMake Error at no-directory\.cmake:[0-9]+ \(file\):
  Error evaluating generator expression:

    \$<DIRECTORY_PROPERTY:,FOO>

  \$<DIRECTORY_PROPERTY:directory,property> expression requires a non-empty
  directory name\.
Call Stack \(most recent call first\):
  CMakeLists\.txt:[0-9]+ \(include\)
