source: general/genlib/glib2.xml@ a9c0e8d

<?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 glib2-download-http "&gnome-download-http;/glib/2.54/glib-&glib2-version;.tar.xz">
  <!ENTITY glib2-download-ftp  "&gnome-download-ftp;/glib/2.54/glib-&glib2-version;.tar.xz">
  <!ENTITY glib2-md5sum        "6e4db71816ccbc8dabf0e58fa7228e76">
  <!ENTITY glib2-size          "7.5 MB">
  <!ENTITY glib2-buildsize     "190 MB (additional 74 MB for tests)">
  <!ENTITY glib2-time          "1.0 SBU (additional 4.6 SBU for tests)">
]>

<sect1 id="glib2" xreflabel="GLib-&glib2-version;">
  <?dbhtml filename="glib2.html"?>

  <sect1info>
    <othername>$LastChangedBy$</othername>
    <date>$Date$</date>
  </sect1info>

  <title>GLib-&glib2-version;</title>

  <indexterm zone="glib2">
    <primary sortas="a-GLib2">GLib2</primary>
  </indexterm>

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

    <para>
      The <application>GLib</application> package contains low-level
      libraries useful for providing data structure handling for C, portability
      wrappers and interfaces for such runtime functionality as an
      event loop, threads, dynamic loading and an object system.
    </para>

    &lfs81_checked;

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>
          Download (HTTP): <ulink url="&glib2-download-http;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download (FTP): <ulink url="&glib2-download-ftp;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download MD5 sum: &glib2-md5sum;
        </para>
      </listitem>
      <listitem>
        <para>
          Download size: &glib2-size;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated disk space required: &glib2-buildsize;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated build time: &glib2-time;
        </para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">Additional Downloads</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>
          Optional patch:
          <ulink url="&patch-root;/glib-&glib2-version;-skip_warnings-1.patch"/>
        </para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">GLib Dependencies</bridgehead>
<!--
    <bridgehead renderas="sect4">Required</bridgehead>
    <para role="required">
      <xref linkend="python2"/> or <xref linkend="python3"/>
    </para>
-->
    <bridgehead renderas="sect4">Recommended</bridgehead>
    <para role="recommended">
      <xref linkend="pcre"/> (built with Unicode properties)
    </para>

    <bridgehead renderas="sect4">Optional</bridgehead>
    <para role="optional">
      <xref linkend="dbus"/> (required for some tests),
      <xref linkend="elfutils"/>,
      <xref linkend="gtk-doc"/>,
      <xref linkend="python2"/>,
      <ulink url="ftp://oss.sgi.com/projects/fam/download/stable/">FAM library</ulink>, and
      <ulink url="https://www.gnu.org/software/indent/">GNU Indent</ulink>
    </para>

    <bridgehead renderas="sect4">Additional Runtime Dependencies</bridgehead>
    <para role="recommended">
      <xref role="runtime" linkend="gobject-introspection"/>
      (should be installed before gtk+, atk, etc.)
    </para>
    <para role="optional">
      Quoted directly from the <filename>INSTALL</filename> file:
      <quote>Some of the mimetype-related functionality in GIO requires the
      <command>update-mime-database</command> and
      <command>update-desktop-database</command> utilities</quote>,
      which are part of
      <xref role="runtime" linkend="shared-mime-info"/> and
      <xref role="runtime" linkend="desktop-file-utils"/>, respectively.
    </para>

    <para condition="html" role="usernotes">User Notes:
      <ulink url="&blfs-wiki;/glib2"/>
    </para>
  </sect2>

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

    <para>If desired, appy the optional patch. In many cases, applications that
    use this library, either  directly or indirectly via other libraries such
    as <xref linkend="gtk3"/>, output numerous warnings when run from the
    command line.  This patch enables the use of an environment variable,
    GLIB_LOG_LEVEL, that supresses unwanted messages. The value of the
    variable is a digit that corresponds to:</para>

    <simplelist>
      <member>1  Alert</member>
      <member>2  Critical</member>
      <member>3  Error</member>
      <member>4  Warning</member>
      <member>5  Notice</member>
    </simplelist>

    <para>For instance GLIB_LOG_LEVEL=4 will skip output of Warning and 
    Notice messages (and Info/Debug messages if they are turned on).
    If GLIB_LOG_LEVEL is not defined, normal message output will not
    be affected.</para>

<screen><userinput>patch -Np1 -i ../glib-&glib2-version;-skip_warnings-1.patch</userinput></screen>

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

<screen><userinput>./configure --prefix=/usr      \
            --with-pcre=system \
            --with-python=/usr/bin/python3 &amp;&amp;
make</userinput></screen>

    <para>
      The <application>GLib</application> test suite requires
      <application>desktop-file-utils</application> for some tests. However,
      <application>desktop-file-utils</application> requires
      <application>GLib</application> in order to compile; therefore, you must
      first install <application>GLib</application> and then run the test
      suite.
    </para>

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

<screen role="root"><userinput>make install</userinput></screen>

    <para>
      You should now install <xref linkend="desktop-file-utils"/> and proceed to
      run the test suite.
    </para>

    <para>
      To test the results, after having installed the package, issue:
      <command>make -k check</command>.
    </para>

  </sect2>

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

    <para>
      <parameter>--with-pcre=system</parameter>: This switch causes the
      build to use a system-provided version of the
      <application>PCRE</application> library instead of an internal
      version.
    </para>

    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
      href="../../xincludes/gtk-doc-rebuild.xml"/>

    <para>
      <option>--with-python=/usr/bin/python3</option>: Add this switch if you
      want GLib to use Python3 instead of Python2.
    </para>

  </sect2>

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

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

      <seglistitem>
        <seg>
          gapplication, gdbus, gdbus-codegen, gio, gio-querymodules,
          glib-compile-resources, glib-compile-schemas,
          glib-genmarshal, glib-gettextize, glib-mkenums,
          gobject-query, gresource, gsettings, gtester,
          and gtester-report
        </seg>
        <seg>
          libgio-2.0.so, libglib-2.0.so, libgmodule-2.0.so,
          libgobject-2.0.so, and libgthread-2.0.so
        </seg>
        <seg>
          /usr/include/gio-unix-2.0,
          /usr/{include,lib,share}/glib-2.0,
          /usr/lib/gio, and
          /usr/share/gtk-doc/html/g{io,lib,object}
        </seg>
      </seglistitem>
    </segmentedlist>

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

      <varlistentry id="gapplication">
        <term><command>gapplication</command></term>
        <listitem>
          <para>
            can be used to start applications and to send
            messages to already-running instances of other applications.
          </para>
          <indexterm zone="glib2 gapplication">
            <primary sortas="b-gapplication">application</primary>
          </indexterm>
        </listitem>
      </varlistentry>
      <varlistentry id="gdbus">
        <term><command>gdbus</command></term>
        <listitem>
          <para>
            is a simple tool used for working with
            <application>D-Bus</application> objects.
          </para>
          <indexterm zone="glib2 gdbus">
            <primary sortas="b-gdbus">gdbus</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gdbus-codegen">
        <term><command>gdbus-codegen</command></term>
        <listitem>
          <para>
            is used to generate code and/or documentation for one or
            more <application>D-Bus</application> interfaces.
          </para>
          <indexterm zone="glib2 gdbus-codegen">
            <primary sortas="b-gdbus-codegen">gdbus-codegen</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gio">
        <term><command>gio</command></term>
        <listitem>
          <para>
            is a utility that makes many <application>GIO</application>
            features available from the command line.
          </para>
          <indexterm zone="glib2 gio">
            <primary sortas="b-gio">gio</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gio-querymodules">
        <term><command>gio-querymodules</command></term>
        <listitem>
          <para>
            is used to create a <filename>giomodule.cache</filename> file in 
            the listed directories. This file lists the implemented extension 
            points for each module that has been found.
          </para>
          <indexterm zone="glib2 gio-querymodules">
            <primary sortas="b-gio-querymodules">gio-querymodules</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="glib-compile-resources">
        <term><command>glib-compile-resources</command></term>
        <listitem>
          <para>
            is used to read the resource description from a file and
            the files that it references to create a binary resource
            bundle that is suitable for use with the GResource API.
          </para>
          <indexterm zone="glib2 glib-compile-resources">
            <primary sortas="b-glib-compile-resources">glib-compile-resources</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="glib-compile-schemas">
        <term><command>glib-compile-schemas</command></term>
        <listitem>
          <para>
            is used to compile all the GSettings XML schema files
            in directory into a binary file with the name 
            <filename>gschemas.compiled</filename> that can be used by GSettings.
          </para>
          <indexterm zone="glib2 glib-compile-schemas">
            <primary sortas="b-glib-compile-resources">glib-compile-schemas</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="glib-genmarshal">
        <term><command>glib-genmarshal</command></term>
        <listitem>
          <para>
            is a C code marshaller generation utility for GLib closures.
          </para>
          <indexterm zone="glib2 glib-genmarshal">
            <primary sortas="b-glib-genmarshal">glib-genmarshal</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="glib-gettextize">
        <term><command>glib-gettextize</command></term>
        <listitem>
          <para>
            is a variant of the <application>gettext</application>
            internationalization utility.
          </para>
          <indexterm zone="glib2 glib-gettextize">
            <primary sortas="b-glib-gettextize">glib-gettextize</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="glib-mkenums">
        <term><command>glib-mkenums</command></term>
        <listitem>
          <para>
            is a C language enum description generation utility.
          </para>
          <indexterm zone="glib2 glib-mkenums">
            <primary sortas="b-glib-mkenums">glib-mkenums</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gobject-query">
        <term><command>gobject-query</command></term>
        <listitem>
          <para>
            is a small utility that draws a tree of types.
          </para>
          <indexterm zone="glib2 gobject-query">
            <primary sortas="b-gobject-query">gobject-query</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gresource">
        <term><command>gresource</command></term>
        <listitem>
          <para>
            offers a simple command line interface to GResource.
          </para>
          <indexterm zone="glib2 gresource">
            <primary sortas="b-gresource">gresource</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gsettings">
        <term><command>gsettings</command></term>
        <listitem>
          <para>
            offers a simple command line interface to GSettings.
          </para>
          <indexterm zone="glib2 gsettings">
            <primary sortas="b-gsettings">gsettings</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gtester">
        <term><command>gtester</command></term>
        <listitem>
          <para>
            is a test running utility.
          </para>
          <indexterm zone="glib2 gtester">
            <primary sortas="b-gtester">gtester</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gtester-report">
        <term><command>gtester-report</command></term>
        <listitem>
          <para>
            is a test report formatting utility.
          </para>
          <indexterm zone="glib2 gtester-report">
            <primary sortas="b-gtester-report">gtester-report</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="GLib-libraries">
        <term>GLib libraries</term>
          <listitem>
          <para>
            contain low-level core libraries for the
            <application>GIMP</application> Toolkit.
          </para>
          <indexterm zone="glib2 GLib-libraries">
            <primary sortas="c-GLib-libraries">Glib libraries</primary>
          </indexterm>
          </listitem>
        </varlistentry>

    </variablelist>

  </sect2>

</sect1>