cc -pthread  -Wall -Wextra -Werror=implicit-function-declaration unistd/gethostid.c -o unistd/gethostid -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt -lintl -liconv
unistd/gethostid.c: In function ‘main’:
unistd/gethostid.c:10:9: error: implicit declaration of function ‘gethostid’; did you mean ‘getsid’? [-Wimplicit-function-declaration]
   10 |         gethostid();
      |         ^~~~~~~~~
      |         getsid