lfs-book/chapter06/readline.xml

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

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

  <title>Readline-&readline-version;</title>

  <indexterm zone="ch-system-readline">
    <primary sortas="a-Readline">Readline</primary>
  </indexterm>

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

    <para>The Readline package is a set of libraries that offers command-line
    editing and history capabilities.</para>

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

      <seglistitem>
        <seg>&readline-ch6-sbu;</seg>
        <seg>&readline-ch6-du;</seg>
      </seglistitem>
    </segmentedlist>

  </sect2>

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

    <para>Reinstalling Readline will cause the old libraries to be moved to
    &lt;libraryname&gt;.old. While this is normally not a problem, in some cases
    it can trigger a linking bug in <command>ldconfig</command>. This can be
    avoided by issuing the following two seds:</para>

<screen><userinput remap="pre">sed -i '/MV.*old/d' Makefile.in
sed -i '/{OLDSUFF}/c:' support/shlib-install</userinput></screen>

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

<screen><userinput remap="configure">./configure --prefix=/usr    \
            --disable-static \
            --with-curses    \
            --docdir=/usr/share/doc/readline-&readline-version;</userinput></screen>

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

      <varlistentry>
        <term><parameter>--with-curses"</parameter></term>
        <listitem>
          <para>This option tells Readline that it can find the termcap
	   library functions in the curses library, rather than a separate
	   termcap library. It allows generating a correct
	   <filename>readline.pc</filename> file.</para>
        </listitem>
      </varlistentry>

    </variablelist>

    <para>Compile the package:</para>

<screen><userinput remap="make">make SHLIB_LIBS="-lncursesw"</userinput></screen>

    <variablelist>
      <title>The meaning of the make option:</title>

      <varlistentry>
        <term><parameter>SHLIB_LIBS="-lncursesw"</parameter></term>
        <listitem>
          <para>This option forces Readline to link against the
          <filename class="libraryfile">libncursesw</filename> library.</para>
        </listitem>
      </varlistentry>

    </variablelist>

    <para>This package does not come with a test suite.</para>

    <para>Install the package:</para>

<screen><userinput remap="install">make SHLIB_LIBS="-lncursesw" install</userinput></screen>

    <para>Now move the dynamic libraries to a more appropriate location
    and fix up some permissions and symbolic links:</para>

<screen><userinput remap="install">mv -v /usr/lib/lib{readline,history}.so.* /lib
chmod -v u+w /lib/lib{readline,history}.so.*
ln -sfv ../../lib/$(readlink /usr/lib/libreadline.so) /usr/lib/libreadline.so
ln -sfv ../../lib/$(readlink /usr/lib/libhistory.so ) /usr/lib/libhistory.so</userinput></screen>

    <para>If desired, install the documentation:</para>

<screen><userinput remap="install">install -v -m644 doc/*.{ps,pdf,html,dvi} /usr/share/doc/readline-&readline-version;</userinput></screen>

  </sect2>

  <sect2 id="contents-readline" role="content">
    <title>Contents of Readline</title>

    <segmentedlist>
      <segtitle>Installed libraries</segtitle>
      <segtitle>Installed directories</segtitle>

      <seglistitem>
        <seg>libhistory.so and libreadline.so</seg>
        <seg>/usr/include/readline and
        /usr/share/doc/readline-&readline-version;</seg>
      </seglistitem>
    </segmentedlist>

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

      <varlistentry id="libhistory">
        <term><filename class="libraryfile">libhistory</filename></term>
        <listitem>
          <para>Provides a consistent user interface for recalling lines
          of history</para>
          <indexterm zone="ch-system-readline libhistory">
            <primary sortas="c-libhistory">libhistory</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libreadline">
        <term><filename class="libraryfile">libreadline</filename></term>
        <listitem>
          <para>Provides a set of commands for manipulating text entered in an
          interactive session of a program.</para>
          <indexterm zone="ch-system-readline libreadline">
            <primary sortas="c-libreadline">libreadline</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>