source: general/genlib/appstream.xml@ 72b6848

<?xml version="1.0" encoding="UTF-8"?>
<!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 appstream-download-http "https://www.freedesktop.org/software/appstream/releases/AppStream-&appstream-version;.tar.xz">
  <!ENTITY appstream-download-ftp  " ">
  <!ENTITY appstream-md5sum        "8db15579a7b25acca99677ddc6a12b68">
  <!ENTITY appstream-size          "2.5 MB">
  <!ENTITY appstream-buildsize     "30 MB">
  <!ENTITY appstream-time          "0.5 SBU (With tests; both using parallelism=4)">

]>

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

  <title>AppStream-&appstream-version;</title>

  <indexterm zone="appstream">
    <primary sortas="a-appstream">AppStream</primary>
  </indexterm>

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

    <para>
      The <application>AppStream</application> package contains a library and
      tool that is useful for retrieving software metadata and making it
      easily accessible to programs which need it.
    </para>

    &lfs122_checked;

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

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

    <bridgehead renderas="sect4">Required</bridgehead>
    <para role="required">
      <xref linkend="curl"/>,
      <phrase revision="sysv"><xref linkend="elogind"/>,</phrase>
      <xref linkend="itstool"/>,
      <xref linkend="libxml2"/>,
      <xref linkend="libxmlb"/>, and
      <xref linkend="libyaml"/>
    </para>

    <bridgehead renderas="sect4">Optional</bridgehead>
    <para role="optional">
      <xref linkend="gi-docgen"/>,
      <xref linkend="qt6"/>,
      <ulink url="https://github.com/openSUSE/daps">DAPS</ulink>, and
      <ulink url="https://github.com/zvelo/libstemmer">libstemmer</ulink>
    </para>

    <!--  Only use this if you want to note something in the wiki
    <para condition="html" role="usernotes">
      Editor Notes: <ulink url="&blfs-wiki;/TEMPLATE"/>
    </para>
    -->
  </sect2>

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

    <para>
      Install <application>AppStream</application> by running the following
      commands:
    </para>

<screen><userinput>mkdir build &amp;&amp;
cd    build &amp;&amp;

meson setup --prefix=/usr       \
            --buildtype=release \
            -D apidocs=false    \
            -D stemming=false   .. &amp;&amp;
ninja</userinput></screen>

    <para>
      To test the results, issue: <command>ninja test</command>.
    </para>

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

<screen role="root"><userinput>ninja install &amp;&amp;
mv -v /usr/share/doc/appstream{,-&appstream-version;}</userinput></screen>

  </sect2>

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

    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
      href="../../xincludes/meson-buildtype-release.xml"/>

    <para>
      <parameter>-D apidocs=false</parameter>: This switch disables building the
      API documentation. Remove it if you have
      <xref linkend="gi-docgen" role="nodep"/> installed and wish to
      regenerate the API documentation.  When the API documentation is
      not regenerated, a pre-built copy is installed anyway.
    </para>

    <para>
      <parameter>-D stemming=false</parameter>: This switch disables stemming
      support. Remove this switch if you have
      <ulink url="https://github.com/zvelo/libstemmer">libstemmer</ulink>
      installed and want faster searches.
    </para>
    
    <para>
      <option>-D qt=true</option>: Use this option if you have
      <xref linkend="qt6" role="nodep"/> installed and you want to build support
      for Qt6 applications into this package. 
    </para>

  </sect2>
  
  <sect2 role="configuration">
    <title>Configuring AppStream</title>

    <sect3 id="appstream-config">
      <title>Config Files</title>

      <para>
        <filename>/usr/share/metainfo/org.linuxfromscratch.lfs.xml</filename>
      </para>
    </sect3>

    <sect3>
      <title>Configuration Information</title>

      <para>
        <application>AppStream</application> expects an operating system
        metainfo file describing the GNU/Linux distribution.  As the
        &root; user, create the file describing LFS:
      </para>

      <indexterm zone="appstream appstream-config">
        <primary sortas="e-usr-share-metainfo-org-linuxfromscratch-lfs-xml">
          /usr/share/metainfo/org.linuxfromscratch.lfs.xml
        </primary>
      </indexterm>

      <screen role="root"><userinput>install -vdm755 /usr/share/metainfo &amp;&amp;
cat > /usr/share/metainfo/org.linuxfromscratch.lfs.xml &lt;&lt; EOF
<literal>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
&lt;component type="operating-system"&gt;
  &lt;id&gt;org.linuxfromscratch.lfs&lt;/id&gt;
  &lt;name&gt;Linux From Scratch&lt;/name&gt;
  &lt;summary&gt;A customized Linux system built entirely from source&lt;/summary&gt;
  &lt;description&gt;
    &lt;p&gt;
      Linux From Scratch (LFS) is a project that provides you with
      step-by-step instructions for building your own customized Linux
      system entirely from source.
    &lt;/p&gt;
  &lt;/description&gt;
  &lt;url type="homepage"&gt;https://www.linuxfromscratch.org/lfs/&lt;/url&gt;
  &lt;metadata_license&gt;MIT&lt;/metadata_license&gt;
  &lt;developer id='linuxfromscratch.org'&gt;
    &lt;name&gt;The Linux From Scratch Editors&lt;/name&gt;
  &lt;/developer&gt;

  &lt;releases&gt;
    &lt;release version="&lfs-appstream-meta-ver;" type="&lfs-appstream-meta-type;" date="&lfs-appstream-meta-date;"&gt;
      &lt;description&gt;
        &lt;p&gt;Now contains Binutils 2.43.1, GCC-14.2.0, Glibc-2.40,
        and Linux kernel 6.10.&lt;/p&gt;
      &lt;/description&gt;
    &lt;/release&gt;

    &lt;release version="12.1" type="stable" date="2024-03-01"&gt;
      &lt;description&gt;
        &lt;p&gt;Now contains Binutils 2.42, GCC-13.2.0, Glibc-2.39,
        and Linux kernel 6.7.&lt;/p&gt;
      &lt;/description&gt;
    &lt;/release&gt;
  &lt;/releases&gt;
&lt;/component&gt;</literal>
EOF</userinput></screen>

    </sect3>
  </sect2>

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

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

      <seglistitem>
        <seg>
          appstreamcli
        </seg>
        <seg>
          libappstream.so
        </seg>
        <seg>
          /usr/include/appstream,
          /usr/share/doc/appstream-&appstream-version;, and
          /usr/share/installed-tests/appstream
        </seg>
      </seglistitem>
    </segmentedlist>

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

      <varlistentry id="appstreamcli">
        <term><command>appstreamcli</command></term>
        <listitem>
          <para>
            queries information from AppStream metadata and from the AppStream
            component index
          </para>
          <indexterm zone="appstream appstreamcli">
            <primary sortas="b-appstreamcli">appstreamcli</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libappstream">
        <term><filename class="libraryfile">libappstream.so</filename></term>
        <listitem>
          <para>
            contains functions that handle AppStream metadata queries and
            request information from the AppStream component index
          </para>
          <indexterm zone="appstream libappstream">
            <primary sortas="c-libappstream">libappstream.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>
    </variablelist>
  </sect2>
</sect1>