lfs/chapter08/expect.xml

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  "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../general.ent">
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<sect1 id="ch-system-expect" role="wrap">
  <?dbhtml filename="expect.html"?>

  <sect1info condition="script">
    <productname>expect</productname>
    <productnumber>&expect-version;</productnumber>
    <address>&expect-url;</address>
  </sect1info>

  <title>Expect-&expect-version;</title>

  <indexterm zone="ch-system-expect">
    <primary sortas="a-Expect">Expect</primary>
  </indexterm>

  <sect2 role="package">
    <title/>

    <para>The <application>Expect</application> package contains tools for
    automating, via scripted dialogues, interactive applications such as
    <command>telnet</command>, <command>ftp</command>,
    <command>passwd</command>, <command>fsck</command>,
    <command>rlogin</command>, and <command>tip</command>.
    <application>Expect</application> is also useful for testing these same
    applications as well as easing all sorts of tasks that are prohibitively
    difficult with anything else. The <application>DejaGnu</application>
    framework is written in <application>Expect</application>.</para>

    <segmentedlist>
      <segtitle>&buildtime;</segtitle>
      <segtitle>&diskspace;</segtitle>

      <seglistitem>
        <seg>&expect-tmp-sbu;</seg>
        <seg>&expect-tmp-du;</seg>
      </seglistitem>
    </segmentedlist>

  </sect2>

  <sect2 role="installation">
    <title>Installation of Expect</title>

    <para>Prepare Expect for compilation:</para>

<screen><userinput remap="configure">./configure --prefix=/usr           \
            --with-tcl=/usr/lib     \
            --enable-shared         \
            --mandir=/usr/share/man \
            --with-tclinclude=/usr/include</userinput></screen>

    <variablelist>
      <title>The meaning of the configure options:</title>

      <varlistentry>
        <term><parameter>--with-tcl=/usr/lib</parameter></term>
        <listitem>
          <para>This parameter is needed to tell
          <command>configure</command> where the
          <command>tclConfig.sh</command> script is located.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><parameter>--with-tclinclude=/usr/include</parameter></term>
        <listitem>
          <para>This explicitly tells Expect where to find Tcl's internal
          headers.</para>
        </listitem>
      </varlistentry>

    </variablelist>

    <para>Build the package:</para>

<screen><userinput remap="make">make</userinput></screen>

    <important>
      <para>The test suite for Expect is considered critical.
      Do not skip it under any circumstances.</para>
    </important>

    <para>To test the results, issue:</para>

<screen><userinput remap="test">make test</userinput></screen>

    <para>If any test fails with the message
    <quote><computeroutput>The system has no more ptys.  Ask your system
    administrator to create more</computeroutput></quote>, it indicates
    you've not mounted the
    <systemitem class="filesystem">devpts</systemitem> file system
    correctly.  You need to exit from the chroot environment, read
    <xref linkend='ch-tools-kernfs'/> again, and ensure the
    <systemitem class="filesystem">devpts</systemitem> file system (and
    other virtual kernel file systems) mounted correctly.  Then reenter
    the chroot environment following <xref linkend='ch-tools-chroot'/>.
    This issue needs to be resolved before continuing.</para>

    <para>Install the package:</para>

<screen><userinput remap="install">make install
ln -svf expect&expect-version;/libexpect&expect-version;.so /usr/lib</userinput></screen>

  </sect2>

  <sect2 id="contents-expect" role="content">
    <title>Contents of Expect</title>

    <segmentedlist>
      <segtitle>Installed program</segtitle>
      <segtitle>Installed library</segtitle>

      <seglistitem>
        <seg>expect</seg>
        <seg>libexpect&expect-version;.so</seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

      <varlistentry id="expect">
        <term><command>expect</command></term>
        <listitem>
          <para>Communicates with other interactive programs according
          to a script</para>
          <indexterm zone="ch-system-expect expect">
            <primary sortas="b-expect">expect</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libexpect">
        <term><filename class="libraryfile">libexpect-&expect-version;.so</filename></term>
        <listitem>
          <para>Contains functions that allow Expect to be used as a Tcl
          extension or to be used directly from C or C++ (without Tcl)</para>
          <indexterm zone="ch-system-expect libexpect">
            <primary sortas="c-libexpect-&expect-version;">libexpect-&expect-version;</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>