%general-entities; ]> Tcl This package and the next two (Expect and DejaGNU) are installed to support running the test suites for GCC and Binutils. Installing three packages for testing purposes may seem excessive, but it is very reassuring, if not essential, to know that the most important tools are working properly. Even if the test suites are not run in this chapter (they are not mandatory), these packages are required to run the test suites in . Prepare Tcl for compilation: cd unix ./configure --prefix=/tools Build the package: make To test the results, issue: TZ=UTC make test. The Tcl test suite is known to experience failures under certain host conditions that are not fully understood. Therefore, test suite failures here are not surprising, and are not considered critical. The TZ=UTC parameter sets the time zone to Coordinated Universal Time (UTC), also known as Greenwich Mean Time (GMT), but only for the duration of the test suite run. This ensures that the clock tests are exercised correctly. Details on the TZ environment variable are provided in . Install the package: make install Now we will install the TCL headers into /tools. make install-private-headers Now make a necessary symbolic link: ln -s tclsh8.4 /tools/bin/tclsh Installed programs Installed library tclsh (link to tclsh8.4) and tclsh8.4 libtcl8.4.so Short Descriptions tclsh8.4 The Tcl command shell tclsh8.4 tclsh A link to tclsh8.4 tclsh libtcl8.4.so The Tcl library libtcl8.4.so