cc -pthread   -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations unistd/_SC_AIO_MAX.c -o unistd/_SC_AIO_MAX -D_POSIX_C_SOURCE=202405L -lm -lpthread  -lgdbm_compat -lintl -lnetwork -lbsd -latomic
unistd/_SC_AIO_MAX.c:2:17: error: '_SC_AIO_MAX' undeclared here (not in a function)
    2 | int const foo = _SC_AIO_MAX;
      |                 ^~~~~~~~~~~