It builds here:
<pre>
$ uname -a
SunOS build 5.10 Generic_142909-17 sun4u sparc SUNW,SPARC-Enterprise
$ ./kitcreator
Building tcl ... done.
Building tclvfs ... done.
Building zlib ... done.
Building tk ... done.
Building itcl ... done.
Building mk4tcl ... done.
Building kitsh ... done.
$ ls -l tclkit-8.4.19
-rwxr-xr-x   1 users    2480068 Feb 26 20:40 tclkit-8.4.19
$
</pre>

I'm looking into the errors you are getting.