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The Tcl package contains the Tool Command Language.
5.11.1. Installation of 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 Chapter 6.
Prepare Tcl for compilation:
cd unix ./configure --prefix=/tools
Build the package:
Compilation is now complete. As discussed earlier, running the test suite is not mandatory for the temporary tools here in this chapter. To run the Tcl test suite anyway, issue the following command:
TZ=UTC make test
The Tcl test suite may experience failures under certain host
conditions that are not fully understood. Therefore, test suite
failures here are not surprising, and are not considered critical.
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
variable are provided in Chapter 7.
Install the package:
Make the installed library writable so debugging symbols can be removed later:
chmod -v u+w /tools/lib/libtcl8.5.so
Install Tcl's headers. The next package, Expect, requires them to build.
Now make a necessary symbolic link:
ln -sv tclsh8.5 /tools/bin/tclsh
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