cc -pthread -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations sys_socket/SOCK_CLOFORK.c -o sys_socket/SOCK_CLOFORK -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lcrypt -latomic sys_socket/SOCK_CLOFORK.c:2:17: error: ‘SOCK_CLOFORK’ undeclared here (not in a function); did you mean ‘SOCK_CLOEXEC’? 2 | int const foo = SOCK_CLOFORK; | ^~~~~~~~~~~~ | SOCK_CLOEXEC