Tcl/Tk help

[N R A]

Sorry - this is not really strictly anything to do with GIS, however it 
is something to do with my efforts to get ready to use Tcl/Tk with GRASS, 
so please bear with me.

I've got Tcl compiled ok - easy just follow the instructions.

Problem is trying to get Tk to compile. If I understand it - and I don't  
8-(
it's failing in the attempt to link with the X11 library

This is the result of the make
tyne% make
cc -O -I. -I./../tcl7.3 -I/usr/openwin/include  -DHAVE_UNISTD_H=1 
-DNO_STDLIB_H=1     -DTK_LIBRARY=\"/usr/local/lib/tk\" tkAppInit.o 
libtk.a ../tcl7.3/libtcl.a -lX11  -lm -o wish
ld: -lX11: No such file or directory
*** Error code 4
make: Fatal error: Command failed for target `wish'
tyne%

I've looked for the 'X11' on our Sun (an IPX with Open Windows 2) and can 
only find the following '*X11*' files

./usr/openwin/lib/libX11.sa.1.0
./usr/openwin/lib/libX11.sa.4.3
./usr/openwin/lib/libX11.so.1.0
./usr/openwin/lib/libX11.so.4.3
./usr/openwin/share/src/xnews/include/X11
./usr/openwin/share/include/X11

Can someone tell me how to alter the Makefile so it can use these - I 
assuming that it can !

Steve Culshaw
NRA North West
e-mail : nra at cix.compulink.co.uk (general usage)
or         sculshaw at cix.compulink.co.uk (Private - only checked at best 
weekly)