GNU interface to NeWS (ps-emacs) problem...

[Senol Kucuk]

[machine: IRIS4D]
[system: IRIX System V Release 3.2 IPG Version ...]
[problem: GNU Emacs NeWS interface (ps-emacs)]

 Hi. I have a request from those who have (if any) installed the
ps-emacs (tut.cis.ohio-state:/pub/gnu/emacs/ps-emacs.tar.Z). I tried
applying the pathces described in the ps-emacs distribution to GNU
emacs 18.55
(tut.cis.ohio-state.edu:/pub/gnu/emacs/18.55/emacs-18.55.tar.Z). 
I used m-iris4d.h and s-iris3-6.h as instructed in etc/MACHINES for a
IRIS4D machine. The patches for the ps-emacs worked fine but i had
problem compiling NeWS.c which gave errors to line 
    if (!updating && outputstarted == 0)
            blockinputmask = sigblock (sigmask (SIGIO));
saying that SIGIO was not defined. The include file
/usr/include/sys/signal.h defines SIGIO by
#define SIGIO   23      /* input/output possible signal */
However the file s-iris3-6.h undefines the SIGIO variable saying that
although iris defines SIGIO it does not use it. So I commented that
line which gave me a running emacs with -nw option (do not create a
NeWS window) but which does nothing but wait when run as emacs
(requesting its own NeWS window). 
 Has anybody else had this kind of problem? Any suggestions? Thanks in
advance.
--
--
  Senol Kucuk, Department of Electrical Engineering, University of Pittsburgh
     {senol,snkst4,kucuk}@{{unix,vms}.cis.pitt.edu,pitt{vms,unix}.bitnet}