cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations dirent/telldir.c -o dirent/telldir -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
dirent/telldir.c:11:22: error: ‘telldir’ undeclared here (not in a function)
   11 | long (*foo)(DIR *) = telldir;
      |                      ^~~~~~~