cc -O2 -pipe  -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations netdb/NI_NUMERICSCOPE.c -o netdb/NI_NUMERICSCOPE -D_POSIX_C_SOURCE=202405L  -lm -lpthread 
netdb/NI_NUMERICSCOPE.c:2:17: error: use of undeclared identifier 'NI_NUMERICSCOPE'
int const foo = NI_NUMERICSCOPE;
                ^
1 error generated.