HUNTER_PROJECT_NAME was chosen as a CMake variable prefix in the common https://github.com/elucideye/drishti-upload repo shared between elucideye org projects. HUNTER_ is a poor name choice and should probably be treated as reserved, since it could conflict with an actual Hunter variable in the future.
Moved from: https://github.com/elucideye/drishti-upload/blob/5b00600c83f77e8a0dd595f7736ff95208238d6f/config.cmake#L9-L18