cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations sys_stat/mkfifoat.c -o sys_stat/mkfifoat -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
sys_stat/mkfifoat.c:5:41: error: ‘mkfifoat’ undeclared here (not in a function)
    5 | int (*foo)(int, const char *, mode_t) = mkfifoat;
      |                                         ^~~~~~~~