malcolm@keilir.UUCP (08/31/87)
Has anyone got EMACS to use X-windows on HP-UX? I have just tried, with v18.41 of Emacs, on an HP9000/320, but failed since the X-window support seems to require SIGIO (which doesn't work on HP-UX). Just turning off the SIGIO code resulted in emacs crashing on a select() somewhere. Have I missed something, or is it impossible? -- Malcolm Cohen mcvax!keilir!malcolm Utgardar, Computer Centre, University of Iceland, Reykjavik -----------------------------------------------------------
tw@hpcea.CE.HP.COM (Tw Cook) (09/05/87)
Malcolm Cohen writes:
Has anyone got EMACS to use X-windows on HP-UX? I have just tried,
with v18.41 of Emacs, on an HP9000/320, but failed since the X-window
support seems to require SIGIO (which doesn't work on HP-UX). Just
turning off the SIGIO code resulted in emacs crashing on a select()
somewhere. Have I missed something, or is it impossible?
It can be done. In process.c, try making this change around the
select in question; I'm not sure why this is necessary, but it seems
to fix the problem. I don't believe there were any other major
problems, but it has been some time since I played with it. You'll
probably find that without SIGIO it is rather sluggish on the 320, if
so, you might want to experiment with using "rtprio" on both emacs and
your X server.
Good luck,
Tw Cook {hplabs, hpfcla}!hpcea!tw or twcook@hplabs.HP.COM
415-857-4916 HP Corporate Engineering - Palo Alto, CA
---- excerpt from process.c: ----------------------------------------
if (read_kbd && kbd_count)
nfds = 0;
else
#ifdef HPUX
nfds = select (MAXDESC, &Available, 0, 0, &timeout);
#else
nfds = select (MAXDESC, &Available, 0, &Exception, &timeout);
#endif
xerrno = errno;
if (fix_screen_hook)
(*fix_screen_hook) ();
...