lfs-book/chapter06/m4.xml

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  "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
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<sect1 id="ch-system-m4" role="wrap">
  <?dbhtml filename="m4.html"?>

  <title>M4-&m4-version;</title>

  <indexterm zone="ch-system-m4">
    <primary sortas="a-M4">M4</primary>
  </indexterm>

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

    <para>The M4 package contains a macro processor.</para>

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

      <seglistitem>
        <seg>&m4-ch6-sbu;</seg>
        <seg>&m4-ch6-du;</seg>
      </seglistitem>
    </segmentedlist>

  </sect2>

  <sect2 role="installation">
    <title>Installation of M4</title>

    <para>Fix a buffer overrun in m4:</para>

<screen><userinput>sed -i -e '1660 s/break;/return;/' src/builtin.c</userinput></screen>

    <para>Prepare M4 for compilation:</para>

<screen><userinput>./configure --prefix=/usr</userinput></screen>

    <para>Compile the package:</para>

<screen><userinput>make</userinput></screen>

    <para>To test the results, issue:
    <userinput>make check</userinput>.</para>

    <para>Install the package:</para>

<screen><userinput>make install</userinput></screen>

  </sect2>


  <sect2 id="contents-m4" role="content">
    <title>Contents of M4</title>

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

      <seglistitem>
        <seg>m4</seg>
      </seglistitem>
    </segmentedlist>

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

      <varlistentry id="m4">
        <term><command>m4</command></term>
        <listitem>
          <para>copies the given files while expanding the macros that they
          contain. These macros are either built-in or user-defined and can
          take any number of arguments. Besides performing macro expansion,
          <command>m4</command> has built-in functions for including named
          files, running Unix commands, performing integer arithmetic,
          manipulating text, recursion, etc. The <command>m4</command> program
          can be used either as a front-end to a compiler or as a macro processor
          in its own right.</para>
          <indexterm zone="ch-system-m4 m4">
            <primary sortas="b-m4">m4</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>