This package and the next two are only installed to be able to run the test suites for GCC and Binutils. Installing three packages just for for testing purposes may seem like overkill, but it is very reassuring, if not essential, to know that our most important tools are working properly. Prepare Tcl to be compiled: cd unix ./configure --prefix=/tools Build, test, and install the package: make make -k test make install Note that several of the tests may fail (for exmple the clock test). This is, however, not a problem: the program will work well enough to be able to run the GCC and Binutils test suites. Make a link: ln -s tclsh8.4 /tools/bin/tclsh Do not remove the tcl&tcl-version; source directory yet, as the next package will need its internal headers.