etc.) - use EAI_xxx error code according to draft-ietf-ipngwg-rfc2553bis-03. (we may still have to reconsider EAI_NODATA - this is an API issue)
--with-irs-gr=yes #define WANT_IRS_GR --with-irs-nis=yes #define WANT_IRS_NIS --with-irs-pw=yes #define WANT_IRS_PW