No need to use environment variable SUGAR_ROOT
No need to use environment variable SUGAR_ROOT

Use CMake variable SUGAR_ROOT, see:
  https://github.com/ruslo/hunter/wiki/pkg.sugar

headupinclouds/gatherer,headupinclouds/gatherer,headupinclouds/gatherer,headupinclouds/gatherer,ruslo/gatherer,ruslo/gatherer,ruslo/gatherer