cc -pipe -O   -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations dirent/ssize_t.c -o dirent/ssize_t -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lrt -lcrypt
dirent/ssize_t.c:2:1: error: unknown type name 'ssize_t'
 ssize_t* foo;
 ^~~~~~~