node.js предупреждения "не найден"

Когда я запускаю configure, я вижу предупреждающие сообщения «не найден» для port.h, sys / event.h и kqueue.

Checking for program g++ or c++          : /usr/bin/g++ 
Checking for program cpp                 : /usr/bin/cpp 
Checking for program ar                  : /usr/bin/ar 
Checking for program ranlib              : /usr/bin/ranlib 
Checking for g++                         : ok  
Checking for program gcc or cc           : /usr/bin/gcc 
Checking for program ar                  : /usr/bin/ar 
Checking for program ranlib              : /usr/bin/ranlib 
Checking for gcc                         : ok  
Checking for library dl                  : yes 
Checking for openssl                     : yes 
Checking for library util                : yes 
Checking for library rt                  : yes 
--- libeio ---
Checking for library pthread             : yes 
Checking for function pthread_create     : yes 
Checking for function pthread_atfork     : yes 
Checking for futimes(2)                  : yes 
Checking for readahead(2)                : yes 
Checking for fdatasync(2)                : yes 
Checking for pread(2) and pwrite(2)      : yes 
Checking for sendfile(2)                 : yes 
Checking for sync_file_range(2)          : yes 
--- libev ---
Checking for header sys/inotify.h        : yes 
Checking for function inotify_init       : yes 
Checking for header sys/epoll.h          : yes 
Checking for function epoll_ctl          : yes 
Checking for header port.h               : not found 
Checking for header poll.h               : yes 
Checking for function poll               : yes 
Checking for header sys/event.h          : not found 
Checking for header sys/queue.h          : yes 
Checking for function kqueue             : not found 
Checking for header sys/select.h         : yes 
Checking for function select             : yes 
Checking for header sys/eventfd.h        : yes 
Checking for function eventfd            : yes 
Checking for SYS_clock_gettime           : yes 
Checking for library rt                  : yes 
Checking for function clock_gettime      : yes 
Checking for function nanosleep          : yes 
Checking for function ceil               : yes 
Checking for fdatasync(2) with c++       : yes 
'configure' finished successfully (1.808s)

Мне это нужно?