cc -pthread  -Wall -Wextra -Werror=implicit-function-declaration unistd/unlinkat.c -o unistd/unlinkat -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt -lintl -liconv
relibc getrlimit(3, 0x7ffffffffc80): not implemented
relibc getrlimit(3, 0x7ffffffffba0): not implemented
relibc getrlimit(9, 0x7ffffffffb60): not implemented
relibc getrlimit(9, 0x7ffffffffb90): not implemented
relibc getrlimit(5, 0x7ffffffffb90): not implemented
relibc getrlimit(9, 0x7ffffffffb60): not implemented
unistd/unlinkat.c: In function 'main':
unistd/unlinkat.c:55:14: error: implicit declaration of function 'unlinkat'; did you mean 'unlink'? [-Werror=implicit-function-declaration]
   55 |         if ( unlinkat(tmpdir_fd, last_slash + 1, AT_REMOVEDIR) < 0 )
      |              ^~~~~~~~
      |              unlink
unistd/unlinkat.c:55:50: error: 'AT_REMOVEDIR' undeclared (first use in this function)
   55 |         if ( unlinkat(tmpdir_fd, last_slash + 1, AT_REMOVEDIR) < 0 )
      |                                                  ^~~~~~~~~~~~
unistd/unlinkat.c:55:50: note: each undeclared identifier is reported only once for each function it appears in
cc1: some warnings being treated as errors