On glibc dist `T_OPT` macro defined inside `/usr/include/arpa/nameser_compat.h` file and looks as ``` #define T_OPT ns_t_opt ``` Inside Alpine dist also exist file `/usr/include/arpa/nameser_compat.h` but content of this file ``` /usr/include # cat /usr/include/arpa/nameser_compat.h #include <arpa/nameser.h>
/usr/include # ``` Is need use `nameser_compat.h` file?