[comp.sys.sequent] Problems building X11R4 on sequent s2000, DYNIX/ptx

william@castle.ed.ac.uk (William Warburton) (04/24/91)

Hi,
	I am trying to build X11R4 on our new sequent and I am having problems
with some library routines that are used in the streams code. I have defined
STREAMS_CONN in the X config files in order to persuade X that it doesn't have
a socket library to play with and I get failures with these three-

./clients/xterm/main.c
1376:           grantpt (screen->respond);
1377:           unlockpt (screen->respond);
1378:           if ((ptyfd = open (ptsname(screen->respond), O_RDWR)) < 0) {
./util/att-nameserver/xdaemon.c
191:    grantpt(munix);
192:    unlockpt(munix);
200:    slave = (char *) ptsname(munix);
./lib/X/Xstreams.c
267:    grantpt(munix);
268:    unlockpt(munix);
276:    slave = (char *) ptsname(munix);
438:    grantpt (fd);
440:    unlockpt (fd);
442:    slave = (char *) ptsname (fd);

 I can't find any references to these three calls (which the X distribution
seems to take for granted). If anyone can help I would really appreciate it.
 I tried phoning Sequent's hotline (UK) and was advised that they didn't have
much experience of DYNIX/ptx, that I should read the manuals and that my best
approach would probably be to use their BSD pseudoterminal handling routines
on top of the streams. Does this seem like good advice? It wasn't really what
I wanted to hear :-(.

Thanks,
	W.

csg@pyramid.pyramid.com (Carl S. Gutekunst) (04/29/91)

>I have defined STREAMS_CONN in the X config files in order to persuade X that
>it doesn't have a socket library to play with and I get failures....
>
>1376:           grantpt (screen->respond);
>1377:           unlockpt (screen->respond);
>1378:           if ((ptyfd = open (ptsname(screen->respond), O_RDWR)) < 0) {
>
>I tried phoning Sequent's hotline (UK) and was advised that... my best
>approach would probably be to use their BSD pseudoterminal handling routines
>on top of the streams.

That is, in fact, exactly what grantpt(), unlockpt(), and ptsname() are:
library routines to emulate Berkeley ptys over a Streams tty driver. I'd
guess these originated with SunOS, and they are certainly present on my SVR4
machine; but they are not part of SVR3.2. Assuming Sequent supplied them in
their port, you'll need to find the library where they live and add that to
your builds. Worst come to worst, you can use: 

	cd /usr/lib
	nm lib*.a | grep ptsname

and narrow it down from there.

<csg>