Tk include files

[glen e. p. ropella]

OK.  I hope this isn't too soon and I honestly tried
to figure out what was going on [grin].... But, I don't
know Objective C.  My make command ends in the following:

make[2]: Leaving directory `/home/gepr/swarm/src/simtools'
make[2]: Entering directory `/home/gepr/swarm/src/space'
gcc -c -g -Wall -Wno-import -I../../include -I/usr/include/tcl
Discrete2d.m
In file included from ../../include/tkobjc.h:15,
                 from ../../include/swarmobject/ActiveGraph.h:7,
                 from ../../include/swarmobject.h:14,
                 from ../../include/space/Discrete2d.h:13,
                 from Discrete2d.m:6:
../../include/tkobjc/TkExtra.h:8: Tk.h: No such file or directory
make[2]: *** [Discrete2d.o] Error 1
make[2]: Leaving directory `/home/gepr/swarm/src/space'
make[1]: [libs] Error 2 (ignored)
make[1]: Leaving directory `/home/gepr/swarm/src'
%

I looked in TkExtra.h and saw two #import commands,
#import <Tk.h>
#import <tk.h>

Apparently, my system doesn't have "Tk.h."  Is the 
content different from tk.h?  Should I just comment
out the Tk.h and try make again?
Thanks.

-- 
glen e. p. ropella
address@hidden                              Hail Eris!
p.s. I'm running on Linux 1.2.13 with tcl 7.4 and tk 4.0
off of the Yggdrasil dist.