Problems with xgraph in ns-allinone-2.1b4a and Solaris 2.6

[chj@lin.foa.se (Christian J|nsson)]

I just tried a install of ns-allinone-2.1b4a and failed with nam and xgraph. The problem in nam was fixed using make CC="gcc -ansi" but for xgraph, I 
don't realy now where to start.

The system uses SC4.2 C compiler: 

> ls -lL /opt/SUNWspro/bin/cc 
-rwxr-xr-x   1 bin      bin       137608 Oct 31  1996 /opt/SUNWspro/bin/cc*

and the Makefile was issued using xmkmf -a.

So, after that, the problems start:

cc -O -Xc -xF -xcg92    -I/usr/openwin/include  -Dsun -Dsparc -DSVR4 -DSYSV     
 -c  xgraph.c
"./xgraph.h", line 166: syntax error before or at: /
"./xgraph.h", line 167: syntax error before or at: /
"xgraph.c", line 109: warning: argument #1 is incompatible with prototype:
        prototype: pointer to function(pointer to struct _XDisplay {}, pointer t
o struct {int type, pointer to struct _XDisplay {..} display, u... : "/usr/openw
in/include/X11/Xlib.h", line 1952
        argument : pointer to function() returning void
"xgraph.c", line 121: undefined symbol: HUGE
"xgraph.c", line 645: warning: using out of scope declaration: NewWindow
"xgraph.c", line 834: warning: argument #3 is incompatible with prototype:
        prototype: pointer to function(ulong, int, pointer to void) returning en
um xtb_hret_defn {XTB_STOP(2), XTB_HANDLED(1), XTB_NOTDEF(0)} : "./xtb.h", line 
71
        argument : pointer to function(ulong, int, pointer to char) returning en
um xtb_hret_defn {XTB_STOP(2), XTB_HANDLED(1), XTB_NOTDEF(0)}
"xgraph.c", line 838: warning: argument #3 is incompatible with prototype:
        prototype: pointer to function(ulong, int, pointer to void) returning en
um xtb_hret_defn {XTB_STOP(2), XTB_HANDLED(1), XTB_NOTDEF(0)} : "./xtb.h", line 
71
        argument : pointer to function(ulong, int, pointer to char) returning en
um xtb_hret_defn {XTB_STOP(2), XTB_HANDLED(1), XTB_NOTDEF(0)}
"xgraph.c", line 844: warning: argument #3 is incompatible with prototype:
        prototype: pointer to function(ulong, int, pointer to void) returning en
um xtb_hret_defn {XTB_STOP(2), XTB_HANDLED(1), XTB_NOTDEF(0)} : "./xtb.h", line 
71
        argument : pointer to function(ulong, int, pointer to char) returning en
um xtb_hret_defn {XTB_STOP(2), XTB_HANDLED(1), XTB_NOTDEF(0)}

After fixing the C++ type comment in xgraph.h, the problems with prototypes 
remains. I really wouldn't like to go into this matter. Any one else done it?

TIA,

/ChJ