For thread enabling add --enable-threads, usually for tcl and tk in
the unix directory,
./configure --enable-threads --pefix=/some/where/
For Thread, (also in the unix directory)
On IRIX, the configure did not give LD_FLAGS for gnu ld, so use /bin/ld.
(unrecognized option -n32)
tcl has main thread exit problem (Segmentation fault). Use thread::join I
found somewhere on the net. However, tmk seems only using join for
the thread. So current my suggestion (2004-12-19(Sun)) is do not
use Thread with tcl.