Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!rutgers!mailrus!ames!umd5!purdue!decwrl!hplabs!hpda!hpsemc!bd
From: bd@hpsemc.HP.COM (bob desinger)
Newsgroups: comp.emacs
Subject: Re: Suspending GNU 18.51 on HP s800
Message-ID: <690018@hpsemc.HP.COM>
Date: 30 May 88 02:53:06 GMT
References: <690015@hpsemc.HP.COM>
Organization: HP Technology Access Center, Cupertino, CA
Lines: 22

Another m-hp9000s800.h note.  Near line 171 appears the comment:

> /* In hpux, for unknown reasons, S_IFLNK is defined even though
>    symbolic links do not exist.
>    Make sure our conditionals based on S_IFLNK are not confused.

Then it #undefs S_IFLNK on line 178.  Well, at revision 2.0 of HP-UX
on the Series 800, symbolic links exist.  So this undef should be
commented out if you're running 2.0 or later.

One way to do this semi-portably would be by imitating the scheme used
in m-hp9000s300.h: allowing a #define of HPUX_1 and keeping the #undef
on line 178 only if HPUX_1 was defined.  I'd be satisfied with merely
commenting out the #undef, and cloning the comment in m-hp9000s300.h
about symlinks not existing on version 1 of HP-UX.

Now you know why S_IFLNK was defined even though symlinks didn't
exist.  The code was in the kernel---HP-UX started from a Berkeley
kernel---but was just #ifdef'ed out until there was enough demand to
justify the extra resources that it would take to support it.

-- bd