Glad you asked! Look in the Tcl distribution for the file called
"porting.notes". This will contain a collection of notes that various people
have provided about porting Tcl to various machines and operating systems.
There are also a file called "README" which should be read FIRST - before
doing anything else with the code (this should always be one`s first
step with any package). Finally, there is a "changes" file which details
what has changed since the last release - be sure to read this to see
what might need to change in your programs.