source: postlfs/filesystems/uefi-bootloaders/efivar.xml@ d8255e5f

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../../general.ent">
  %general-entities;

  <!ENTITY efivar-download-http "https://github.com/rhboot/efivar/releases/download/&efivar-version;/efivar-&efivar-version;.tar.bz2">
  <!ENTITY efivar-download-ftp  " ">
  <!ENTITY efivar-md5sum        "243fdbc48440212695cb9c6e6fd0f44f">
  <!ENTITY efivar-size          "316 KB">
  <!ENTITY efivar-buildsize     "18 MB">
  <!ENTITY efivar-time          "less than 0.1 SBU">
]>

<sect1 id="efivar" xreflabel="efivar-&efivar-version;">
  <?dbhtml filename="efivar.html"?>


  <title>efivar-&efivar-version;</title>

  <indexterm zone="efivar">
    <primary sortas="a-efivar">efivar</primary>
  </indexterm>

  <sect2 role="package">
    <title>Introduction to efivar</title>

    <para>
      The <application>efivar</application> package provides tools and
      libraries to manipulate EFI variables.
    </para>

    &lfs113_checked;

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>
          Download (HTTP): <ulink url="&efivar-download-http;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download (FTP): <ulink url="&efivar-download-ftp;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download MD5 sum: &efivar-md5sum;
        </para>
      </listitem>
      <listitem>
        <para>
          Download size: &efivar-size;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated disk space required: &efivar-buildsize;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated build time: &efivar-time;
        </para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">Additional Downloads</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>
          Optional patch (Required for 32-bit systems):
          <ulink url="&patch-root;/efivar-&efivar-version;-i686-1.patch"/>
        </para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">efivar Dependencies</bridgehead>

    <bridgehead renderas="sect4">Required</bridgehead>
    <para role="required">
      <xref linkend="mandoc"/>
    </para>

    <para condition="html" role="usernotes">User Notes:
    <ulink url="&blfs-wiki;/efivar"/></para>

  </sect2>

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

    <para>
      First, fix an issue in Makefile causing the package to be rebuilt
      during installation:
    </para>

<screen><userinput>sed '/prep :/a\\ttouch prep' -i src/Makefile</userinput></screen>

    <note>
      <para>
        This package cannot function properly on a 32-bit system with a
        64-bit UEFI implementation.  Don't install this package (or
        efibootmgr) on 32-bit system unless you are absolutely sure you have
        a 32-bit UEFI implementation, which is very rare in practice.
      </para>
    </note>

    <para>
      If building this package on a 32-bit system, apply a patch:
    </para>

<screen><userinput>[ $(getconf LONG_BIT) = 64 ] || patch -Np1 -i ../efivar-&efivar-version;-i686-1.patch</userinput></screen>

    <para>
      Build <application>efivar</application> with the following commands:
    </para>

<screen><userinput>make ERRORS=</userinput></screen>

    <para>
      The test suite of this package is dangerous.  Running it may trigger
      firmware bugs and make your system unusable without using some special
      hardware to reprogram the firmware.
    </para>

    <para>
      Now, as the <systemitem class="username">root</systemitem> user:
    </para>

<screen role="root"><userinput>make install LIBDIR=/usr/lib</userinput></screen>

  </sect2>

  <sect2 role="commands">
    <title>Command Explanations</title>

    <para>
      <parameter>ERRORS=</parameter>:
      This option overrides the <option>-Werror</option> passed to GCC
      by default, so the package won't fail to build with the
      <option>-Wenum-int-mismatch</option> warning introduced in GCC 13.
    </para>

    <para>
      <parameter>LIBDIR=/usr/lib</parameter>:
      This option overrides the default library directory of the package
      (<filename class="directory">/usr/lib64</filename>, which is not used
      by LFS.)
    </para>

  </sect2>

  <sect2 role="content">
    <title>Contents</title>

    <segmentedlist>
      <segtitle>Installed Programs</segtitle>
      <segtitle>Installed Libraries</segtitle>
      <segtitle>Installed Directories</segtitle>

      <seglistitem>
        <seg>
          efisecdb and efivar
        </seg>
        <seg>
          libefiboot.so, libefisec.so, and libefivar.so
        </seg>
        <seg>
          /usr/include/efivar
        </seg>
      </seglistitem>
    </segmentedlist>

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

      <varlistentry id="efisecdb">
        <term><command>efisecdb</command></term>
        <listitem>
          <para>
            is an utility for managing UEFI signature lists
          </para>
          <indexterm zone="efivar efisecdb">
            <primary sortas="b-efisecdb">efisecdb</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="efivar-prog">
        <term><command>efivar</command></term>
        <listitem>
          <para>
            is a tool to manipulate UEFI variables
          </para>
          <indexterm zone="efivar efivar-prog">
            <primary sortas="b-efivar">efivar</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libefiboot">
        <term><filename class="libraryfile">libefiboot.so</filename></term>
        <listitem>
          <para>
            is a library used by <command>efibootmgr</command>
          </para>
          <indexterm zone="efivar libefiboot">
            <primary sortas="c-libefiboot">libefiboot.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libefisec">
        <term><filename class="libraryfile">libefisec.so</filename></term>
        <listitem>
          <para>
            is a library for managing UEFI signature lists
          </para>
          <indexterm zone="efivar libefisec">
            <primary sortas="c-libefisec">libefisec.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libefivar">
        <term><filename class="libraryfile">libefivar.so</filename></term>
        <listitem>
          <para>
            is a library for the manipulation of EFI variables
          </para>
          <indexterm zone="efivar libefiboot">
            <primary sortas="c-libefiboot">libefiboot.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>