The Tcl package contains the Tool Command Language.
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 Chapter 6.
Prepare Tcl for compilation:
cd unix ./configure --prefix=/tools
Build the package:
To test the results, issue:
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
TZ environment variable are provided
in Chapter 7.
Install the package:
Install Tcl's headers. The next package, Expect, requires them to build.
Now make a necessary symbolic link:
ln -sv tclsh8.4 /tools/bin/tclsh