When you retrieve one of these files, you'll get a compressed tar file with a name like tcl8.0.5.tar.gz or tcl8.0.5.tar. Be sure to compile Tcl before Tk, since Tk depends on information in Tcl. Tcl and Tk should compile with little or no effort on any platform that runs a UNIX-like operating system and the X Window System. This includes workstations from Sun, HP, IBM, SGI, and DEC, PCs running a number of Unix operating systems such as Solaris, Linux, SCO UNIX, and FreeBSD, plus many other platforms such as Cray and NEC supercomputers. These releases should also compile with little or no effort on Windows and Macintosh platforms.
More Information See the comp.lang.tcl newsgroup for more user information.
The most important changes in Tcl 8.0 are summarized below. Bytecode compiler . The new objects make it possible to store information in efficient internal forms and avoid the constant translations to and from strings that occurred with the old interpreter. Future releases should achieve even greater speedups. The compiler introduces only a few minor changes at the level of Tcl scripts, but it introduces many new C APIs for managing objects.