Notes/known problems:
[1] IRIX 6.5 inet_ntoa seems to break with GCC.
[2] The SGI IRIX compiler produces many spurious warnings.
- [3] Dynamically linked, needs some help to find libadns.so.0.1.
+ [3] Dynamically linked, needs some help to find libadns.so.1.0.
The following platforms are known to be deficient and will not work:
Solaris 2.5 Lacks vsnprintf - install glibc ?