1 | <sect1 id="ch05-tcl">
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2 | <title>Installing Tcl-&tcl-version;</title>
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3 | <?dbhtml filename="tcl.html" dir="chapter05"?>
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4 |
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5 | <screen>Estimated build time: &tcl-time-tools;
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6 | Estimated required disk space: &tcl-compsize-tools;</screen>
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7 |
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8 | &aa-tcl-shortdesc;
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9 | &aa-tcl-dep;
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10 |
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11 | <sect2><title> </title><para> </para></sect2>
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12 |
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13 | <sect2>
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14 | <title>Installation of Tcl</title>
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15 |
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16 | <para>This package and the next two are only installed to be able to run the
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17 | test suites for GCC and Binutils. Installing three packages just for testing
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18 | purposes may seem like overkill, but it is very reassuring, if not essential,
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19 | to know that our most important tools are working properly.</para>
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20 |
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21 | <para>Prepare Tcl for compilation:</para>
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22 |
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23 | <screen><userinput>cd unix
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24 | ./configure --prefix=/tools</userinput></screen>
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25 |
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26 | <para>Build the package:</para>
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27 |
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28 | <screen><userinput>make</userinput></screen>
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29 |
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30 | <para>This package has a test suite available which can perform a number of
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31 | checks to ensure it built correctly. However, the Tcl test suite in this
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32 | chapter is known to experience failures under certain host conditions that are
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33 | not fully understood. Therefore, test suite failures here are not surprising,
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34 | but are not considered critical. Should you choose to run the test suite, the
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35 | following command will do so:</para>
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36 |
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37 | <screen><userinput>TZ=UTC make test</userinput></screen>
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38 |
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39 | <para>The meaning of the make parameter:</para>
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40 |
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41 | <itemizedlist>
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42 | <listitem><para><userinput>TZ=UTC</userinput>: This sets the time zone to
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43 | Coordinated Universal Time (UTC) also known as Greenwich Mean Time (GMT), but
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44 | only for the duration of the test suite run. This ensures the clock tests are
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45 | exercised correctly. More information on the TZ environment variable is
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46 | available later on in <xref linkend="chapter07"/>.</para></listitem>
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47 | </itemizedlist>
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48 |
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49 | <para>Sometimes, package test suites will give false failures. You can
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50 | consult the LFS Wiki at <ulink url="http://wiki.linuxfromscratch.org/"/>
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51 | to verify that these failures are normal. This applies to all tests
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52 | throughout the book.</para>
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53 |
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54 | <para>Install the package:</para>
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55 |
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56 | <screen><userinput>make install</userinput></screen>
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57 |
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58 | <important><para><emphasis>Do not remove</emphasis> the
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59 | <filename>tcl&tcl-version;</filename> source directory yet, as the next package
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60 | will need its internal headers.</para></important>
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61 |
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62 | <para>Make a necessary symbolic link:</para>
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63 |
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64 | <screen><userinput>ln -s tclsh8.4 /tools/bin/tclsh</userinput></screen>
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65 |
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66 | </sect2>
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67 |
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68 | </sect1>
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69 |
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