source: clfs-embedded/BOOK/cross-tools/common/uclibc.xml@ 891e001

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  "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;
]>

<!-- Common uClibc -->

<sect1 id="ch-cross-tools-uclibc" role="wrap">
  <?dbhtml filename="uclibc.html"?>

  <title>uClibc-&uclibc-version;</title>

  <indexterm zone="ch-cross-tools-uclibc">
    <primary sortas="a-uClibc">uClibc</primary>
    <secondary>cross tools</secondary>
  </indexterm>

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

    <para>The uClibc package contains the main C library. This library provides
    the basic routines for allocating memory, searching directories, opening and
    closing files, reading and writing files, string handling, pattern matching,
    arithmetic, and so on.</para>

  </sect2>

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

    <note os="a">
      <para>Below we are just telling uClibc to use its default configuration.
      For those who are more adventurous, you can use make menuconfig and
      do a more custom build for your uClibc installation.</para>
    </note>

    <para os="b">The following patch contains the default configurations for
    the architectures covered in this book:</para>

<screen os="c"><userinput>patch -Np1 -i ../&uclibc-configs-patch;</userinput></screen>

   <para os="d">Now we will copy the configuration file best matching this
   build and use that as the base:</para>

<screen os="e"><userinput>cp -v clfs/config.${CLFS_ARCH}.${CLFS_ENDIAN} .config</userinput></screen>

    <para os="f">The config is a basic working system, but there are some
    options that are architecture specifc that need to be set. The following
    command will only bring up items that need a value that we did not
    specify in our generic config file patch:</para>

<screen os="g"><userinput>make oldconfig</userinput></screen>

    <para os="h">Compile the package:</para>

<screen os="i"><userinput>make</userinput></screen>

    <para os="l">Install the package:</para>

<screen os="j"><userinput>make PREFIX=${CLFS} install</userinput></screen>

  </sect2>

  <sect2 id="contents-uclibc" role="content">
    <title>Contents of uClibc</title>

    <segmentedlist>
      <segtitle>Installed Programs</segtitle>
      <segtitle>Installed Libraries</segtitle>
      <segtitle>Installed Headers</segtitle>
      <seglistitem>
        <seg>ld-uClibc.so.0</seg>
        <seg> libc.so.0, libcrypt.so.0, libdl.so.0, libm.so.0, libpthread.so.0,
        librt.so.0</seg>
        <seg>To be written...</seg>
      </seglistitem>
    </segmentedlist>

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

      <varlistentry id="ld-uClibc">
        <term><command>ld-uClibc</command></term>
        <listitem>
          <para>The uClibc dynamic linker / loader</para>
          <indexterm zone="ch-cross-tools-uclibc ld-uClibc">
            <primary sortas="b-ld-uClibc">ld-uClibc</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libc">
        <term><filename class="libraryfile">libc</filename></term>
        <listitem>
          <para>The C library</para>
          <indexterm zone="ch-cross-tools-uclibc libc">
            <primary sortas="c-libc">libc</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libcrypt">
        <term><filename class="libraryfile">libcrypt</filename></term>
        <listitem>
          <para>The cryptographic library</para>
          <indexterm zone="ch-cross-tools-uclibc libcrypt">
            <primary sortas="c-libcrypt">libcrypt</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libdl">
        <term><filename class="libraryfile">libdl</filename></term>
        <listitem>
          <para>The uClibc dynamic linker / loader library</para>
          <indexterm zone="ch-cross-tools-uclibc libdl">
            <primary sortas="c-libdl">libdl</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libm">
        <term><filename class="libraryfile">libm</filename></term>
        <listitem>
          <para>The math library</para>
          <indexterm zone="ch-cross-tools-uclibc libm">
            <primary sortas="c-libm">libm</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libpthread">
        <term><filename class="libraryfile">libpthread</filename></term>
        <listitem>
          <para>The POSIX thread library</para>
          <indexterm zone="ch-cross-tools-uclibc libpthread">
            <primary sortas="c-libpthread">libpthread</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="librt">
        <term><filename class="libraryfile">librt</filename></term>
        <listitem>
          <para>The clock and timer library</para>
          <indexterm zone="ch-cross-tools-uclibc librt">
            <primary sortas="c-librt">librt</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>
  </sect2>
</sect1>