cc -pipe -O   -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations dirent/posix_getdents.c -o dirent/posix_getdents -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lrt -lcrypt
dirent/posix_getdents.c:5:10: error: expected declaration specifiers or '...' before '*' token
 ssize_t (*foo)(int, void *, size_t, int) = posix_getdents;
          ^