You will find that adns requires a reasonably standard and up to date
system.
+The following platforms have been tested at at least some point and
+should work - please report if they don't:
+ [adns] OS
+ pre-1.0 Linux glibc 2.1 (actually tested on Debian 2.2).
+ pre-1.0 FreeBSD 3.2
+ pre-1.0 Solaris 2.6, 2.7, 2.8
+ pre-1.0 HP-UX 10.20, 11.00
+ pre-1.0 IRIX 6.5 *not* with GCC [1], --disable-dynamic
+Later versions of the same OS should work too. [adns] is the latest
+version of adns that has been tested. Usually entries in this table
+mean they pass adns's own regression test, when compiled with GCC.
+Notes/known problems:
+ [1] IRIX 6.5 inet_ntoa seems to break with GCC.
+
+The following platforms are known to be deficient and will not work:
+ Solaris 2.5 Lacks vsnprintf
+Please don't report these problems unless you have a nice,
+straightforward solution or workaround for them.
+
In particular, the build system assumes that you have ELF shared
libraries. If you don't then please don't send me patches to support
your kind of shared libraries, and don't send me patches to use