🚀 go-pugleaf

I have now successfully built xboard on an SGI Indigo, OS release
5.1.*, for use with gnuchessx.  The problem turned out to be in the
following code in xboard.c:

#ifdef SVR4
    if (ioctl (to_prog[0], I_PUSH, "ptem") == -1 ||
        ioctl (to_prog[0], I_PUSH, "ldterm") == -1 ||
        ioctl (to_prog[0], I_PUSH, "ttcompat") == -1) {
        DisplayFatalError("Can't ioctl pseudo-tty", errno);
        ExitEvent(1);
    }
#endif /*SVR4*/

With the IRIX define the SVR4 block is compiled, but it crashes when
run.  I removed this block and everything now seems to work fine.


I had two problems with gnuchess.  First, the suggested CFLAGS setting

CFLAGS= -g -cckr -DNOMACROS -Dhuge=""  #Correct flags for gnuchess 4.0 with IRIX cc.

did not work very well.  I had good luck instead with

CFLAGS= -O2 -acpp -signed -Wp,-traditional # IRIX 5.1.*?

This compiled out of the box with only one warning.  But then when I
"make install" I got smoke at the command

cat test| ./gnuchessr -b /tmp/t  -B ./gnuchess.data -S 188000 -P 24

Presumably this is a bug in the 5.1 OS, as I got a successful build by
changing this to

./gnuchessr -b /tmp/t  -B ./gnuchess.data -S 45000 -P 16 < test


Hope this helps anyone else trying to build on  IRIX OS release 5.1.

Michael J. Donahue
Institute for Mathematics and its Applications
University of Minnesota
donahue@ima.umn.edu