cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations sys_stat/mkfifo.c -o sys_stat/mkfifo -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
sys_stat/mkfifo.c:5:36: error: ‘mkfifo’ undeclared here (not in a function)
    5 | int (*foo)(const char *, mode_t) = mkfifo;
      |                                    ^~~~~~