-Originally much of the Gnulib code was portable to ancient hosts like
-4.2BSD, but it is a maintenance hassle to maintain compatibility with
-unused hosts, so currently we assume at least a freestanding C89
-compiler, possibly operating with a C library that predates C89. The
-oldest environment currently ported to is probably SunOS 4 + GCC 1.x,
-though we haven't tested this exact combination. SunOS 4 last shipped
-on 1998-09-30, and Sun dropped support for it on 2003-10-01, so at
-some point we may start assuming a C89 library as well.
+Currently we assume at least a freestanding C89 compiler, possibly
+operating with a C library that predates C89. The oldest environments
+currently ported to are probably HP-UX 10.20 and IRIX 5.3, though we
+are not testing these platforms very often.