Bruce Momjian <pgman@xxxxxxxxxxxxxxxx> writes: > I have the answer. Tru64 netdb.h has: > #if defined (_SOCKADDR_LEN) || defined (_XOPEN_SOURCE_EXTENDED) > #define getaddrinfo ngetaddrinfo > #else > #define getaddrinfo ogetaddrinfo > #endif Seems like the same method we use for testing finite() and other possible-macros would handle this, then. regards, tom lane