XGraph12.0 installation problem

["Mr. Kashinath Basu" <kbasu@dsrg.brookes.ac.uk>]

Hey, 
I tried to install the original source distn of XGraph12.0 in Sun-Sparc
running SunOS 5.5
But none of the 2 options mentioned in the Installation readme file works.

If I give the X11 source dir, it shows the foll output:
dsrg% make TOP=/usr/lib/X11
cc    -I/usr/include         -c xgraph.c 
"./xgraph.h", line 150: identifier redeclared: sprintf
        current : function() returning pointer to char
        previous: function() returning int : "/usr/include/stdio.h", line 277
"xgraph.c", line 645: warning: using out of scope declaration: NewWindow
make: *** [xgraph.o] Error 2


If I use the other option using Makefile.std, it cannot find the file:
dsrg% make -f Makefile.std
make: Makefile.std: No such file or directory
make: *** No rule to make target `Makefile.std'.  Stop.