message: Use appropriate macro.
diff: @@ -38,7 +38,7 @@ if(BUILD_MONGO_DB_PLUGIN)
  # mongo-cxx-driver 3.2 release altered LIBBSONCXX_LIBRARIES semantics. Instead of library names,
  # it now hold library paths.
  - if((LIBBSONCXX_VERSION_MAJOR LESS 3) OR ((LIBBSONCXX_VERSION_MAJOR EQUAL 3) AND (LIBBSONCXX_VERSION_MINOR LESS 2)))
  + if((LIBMONGOCXX_VERSION_MAJOR LESS 3) OR ((LIBMONGOCXX_VERSION_MAJOR EQUAL 3) AND (LIBMONGOCXX_VERSION_MINOR LESS 2)))
  find_library(EOS_LIBMONGOCXX ${LIBMONGOCXX_LIBRARIES}
  PATHS ${LIBMONGOCXX_LIBRARY_DIRS} NO_DEFAULT_PATH)
  else()
  