cc -O2 -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations stdlib/WNOHANG.c -o stdlib/WNOHANG -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lintl -lcrypt
stdlib/WNOHANG.c:2:17: error: 'WNOHANG' undeclared here (not in a function)
    2 | int const foo = WNOHANG;
      |                 ^~~~~~~