The source for TTH is flex code which is processed to produce a C program
tth.c which comprises the distribution. This file is compiled by
gcc -o tth tth.c
or whatever C compiler you are using. Compilation takes
typically less than a minute on a modern PC.
The executable should then be copied to whatever directory you want
(preferably on your path of course). That's all!
Alternatively you may be able to obtain a precompiled executable from
wherever you accessed this file. The Wind@ws executable comes with a
batch file for installation. Just run it by the command "install".