usermanual-install-harfbuzz.xml

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docs/usermanual-install-harfbuzz.xml
<?xml version="1.0"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
               "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
  <!ENTITY % local.common.attrib "xmlns:xi  CDATA  #FIXED 'http://www.w3.org/2003/XInclude'">
  <!ENTITY version SYSTEM "version.xml">
]>
<chapter id="install-harfbuzz">
  <title>Installing HarfBuzz</title>
  
  <section id="download">
    <title id="download.title">Downloading HarfBuzz</title>
    <para>
      The HarfBuzz source code is hosted at <ulink
      url="https://github.com/harfbuzz/harfbuzz">github.com/harfbuzz/harfbuzz</ulink>.
    </para>
    <para>
      Tarball releases and Win32 binary bundles (which include the
      libharfbuzz DLL, hb-view.exe, hb-shape.exe, and all
      dependencies) of HarfBuzz can be downloaded from <ulink
      url="https://github.com/harfbuzz/harfbuzz/releases">github.com/harfbuzz/harfbuzz/releases</ulink>.
    </para>
    <para>
      Release notes are posted with each new release to provide an
      overview of the changes. The project <ulink url="https://github.com/harfbuzz/harfbuzz/issues">tracks bug
      reports and other issues</ulink> on GitHub. Discussion and
      questions are welcome on <ulink
      url="https://github.com/harfbuzz/harfbuzz/discussions">GitHub</ulink> as well.
    </para>
    <para>
      The API included in the <filename
      class='headerfile'>hb.h</filename> file will not change in a
      compatibility-breaking way in any release. However, other,
      peripheral headers are more likely to go through minor
      modifications. We will do our best to never change APIs in an
      incompatible way. We will <emphasis>never</emphasis> break the ABI. 
    </para>
  </section>
  
  <section id="building">
    <title>Building HarfBuzz</title>

    <section id="building.linux">
      <title>Building on Linux</title>
    <para>
      <emphasis>(1)</emphasis> To build HarfBuzz on Linux, you must first install the
      development packages for FreeType, Cairo, and GLib. The exact
      commands required for this step will vary depending on
      the Linux distribution you use.
    </para>
    <para>
      For example, on an Ubuntu or Debian system, you would run:
      <programlisting><command>sudo apt install</command> <package>gcc g++ libfreetype6-dev libglib2.0-dev libcairo2-dev</package></programlisting>
      On Fedora, RHEL, CentOS, or other Red-Hat&ndash;based systems, you would run:
      <programlisting><command>sudo yum install</command> <package>gcc gcc-c++ freetype-devel glib2-devel cairo-devel</package></programlisting>

    </para>
    
    <para>
      <emphasis>(2)</emphasis> The next step depends on whether you
      are building from the source in a downloaded release tarball or
      from the source directly from the git repository.
    </para>
    <para>
      <emphasis>(2)(a)</emphasis> If you downloaded the HarfBuzz
      source code in a tarball, you can now extract the source.
    </para>
    <para>
      From a shell in the top-level directory of the extracted source
      code, you can run <command>meson build</command> followed by
      <command>meson compile -C build</command> as with any other standard package.
    </para>
    <para>
      This should leave you with a shared
      library in the <filename>src/</filename> directory, and a few
      utility programs including <command>hb-view</command> and
      <command>hb-shape</command> under the <filename>util/</filename>
      directory.
    </para>
    <para>
      <emphasis>(2)(b)</emphasis> If you are building from the source in the HarfBuzz git
      repository, rather than installing from a downloaded tarball
      release, then you must install two more auxiliary tools before you 
      can build for the first time: <package>pkg-config</package>.
    </para>
    <para>
      On Ubuntu or Debian, run:
      <programlisting><command>sudo apt-get install</command> <package>meson pkg-config gtk-doc-tools</package></programlisting>
      On Fedora, RHEL, CentOS, run:
      <programlisting><command>sudo yum install</command> <package>meson pkgconfig gtk-doc</package></programlisting>
      
    </para>
    <para>
      With <package>pkg-config</package> installed, you can now run
      <command>meson build</command> then
      <command>meson compile -C build</command> to build HarfBuzz.
    </para>
    </section>

    
    <section id="building.windows">
      <title>Building on Windows</title>

      <para>
        <ulink url="https://mesonbuild.com/Getting-meson.html">Install meson</ulink>
        and run (from the console) <command>meson build</command> (by default
        bundled dependencies are not built, <command>--wrap-mode=default</command>
        overrides this), then <command>meson compile -C build</command> to
	build HarfBuzz.
      </para>
    </section>

    
    <section id="building.macos">
      <title>Building on macOS</title>

      <para>
	There are two ways to build HarfBuzz on Mac systems: MacPorts
	and Homebrew. The process is similar to the process used on a
	Linux system.
      </para>
      <para>
	<emphasis>(1)</emphasis> You must first install the
	development packages for FreeType, Cairo, and GLib. If you are
	using MacPorts, you should run:
      <programlisting><command>sudo port install</command> <package>freetype glib2 cairo</package></programlisting>
      </para>
      <para>
	If you are using Homebrew, you should run:
	<programlisting><command>brew install</command> <package>freetype glib cairo</package></programlisting>
      </para>
      <para>
	<emphasis>(2)</emphasis> The next step depends on whether you are building from the
	source in a downloaded release tarball or from the source directly
	from the git repository.
      </para>
      <para>
	<emphasis>(2)(a)</emphasis> If you are installing HarfBuzz
	from a downloaded tarball release, extract the tarball and
	open a Terminal in the extracted source-code directory. Run:
	<programlisting><command>meson build</command></programlisting>
	followed by:
	<programlisting><command>meson compile -C build</command></programlisting>
	to build HarfBuzz.
      </para>
      <para>
	<emphasis>(2)(b)</emphasis> Alternatively, if you are building
	HarfBuzz from the source in the HarfBuzz git repository, then
	you must install several built-time dependencies before
	proceeding.
      </para>
      <para>If you are
	using MacPorts, you should run:
      <programlisting><command>sudo port install</command> <package>meson pkgconfig gtk-doc</package></programlisting>
      to install the build dependencies.
      </para>
      <para>If you are using Homebrew, you should run:
	<programlisting><command>brew install</command> <package>meson pkgconfig gtk-doc</package></programlisting>
      	Finally, you can run:
	<programlisting><command>meson build</command></programlisting>
      </para>
      <para>
	<emphasis>(3)</emphasis> You can now build HarfBuzz (on either
	a MacPorts or a Homebrew system) by running:
	<programlisting><command>meson build</command></programlisting>
	followed by:
	<programlisting><command>meson compile -C build</command></programlisting>
      </para>
      <para>
	This should leave you with a shared
	library in the <filename>src/</filename> directory, and a few
	utility programs including <command>hb-view</command> and
	<command>hb-shape</command> under the <filename>util/</filename>
	directory.
      </para>      
	
    </section>

    <section id="configuration">
      <title>Configuration options</title>

      <para>
	The instructions in the "Building HarfBuzz" section will build
	the source code under its default configuration. If needed,
	the following additional configuration options are available.
      </para>

      <variablelist>
	<?dbfo list-presentation="blocks"?>	
	<varlistentry>
	  <term><command>-Dglib=enabled</command></term>
	  <listitem>
	    <para>
	     Use <ulink url="https://developer.gnome.org/glib/">GLib</ulink>. <emphasis>(Default = auto)</emphasis>
	    </para>
	    <para>
	      This option enables or disables usage of the GLib
	      library.  The default setting is to check for the
	      presence of GLib and, if it is found, build with
	      GLib support. GLib is native to GNU/Linux systems but is
	      available on other operating system as well.
	    </para>
	  </listitem>
	</varlistentry>
	
	<varlistentry>
	  <term><command>-Dgobject=enabled</command></term>
	  <listitem>
	    <para>
	      Use <ulink url="https://developer.gnome.org/gobject/stable/">GObject</ulink>. <emphasis>(Default = no)</emphasis>
	    </para>	   
	    <para>
	      This option enables or disables usage of the GObject
	      library. The default setting is to check for the
	      presence of GObject and, if it is found, build with
	      GObject support. GObject is native to GNU/Linux systems but is
	      available on other operating system as well.
	    </para> 
	  </listitem>
	</varlistentry>
	
	<varlistentry>
	  <term><command>-Dcairo=enabled</command></term>
	  <listitem>
	    <para>
	      Use <ulink url="https://cairographics.org/">Cairo</ulink>. <emphasis>(Default = auto)</emphasis>
	    </para>	   
	    <para>
	      This option enables or disables usage of the Cairo
	      graphics-rendering library. The default setting is to
	      check for the presence of Cairo and, if it is found,
	      build with Cairo support.
	    </para>
	    <para>
	      Note: Cairo is used only by the HarfBuzz
	      command-line utilities, and not by the HarfBuzz library.
	    </para>
	  </listitem>
	</varlistentry>
	
	<varlistentry>
	  <term><command>-Dicu=enabled</command></term>
	  <listitem>
	    <para>
	      Use the <ulink url="http://site.icu-project.org/home">ICU</ulink> library. <emphasis>(Default = auto)</emphasis>
	    </para>
	    <para>
	      This option enables or disables usage of the
	      <emphasis>International Components for
	      Unicode</emphasis> (ICU) library, which provides access
	      to Unicode Character Database (UCD) properties as well
	      as normalization and conversion functions. The default
	      setting is to check for the presence of ICU and, if it
	      is found, build with ICU support.
	    </para>
	  </listitem>
	</varlistentry>
	
	<varlistentry>
	  <term><command>-Dgraphite=enabled</command></term>
	  <listitem>
	    <para>
	      Use the <ulink url="http://graphite.sil.org/">Graphite2</ulink> library. <emphasis>(Default = no)</emphasis>
	    </para>
	    <para>
	      This option enables or disables usage of the Graphite2
	      library, which provides support for the Graphite shaping
	      model. 
	    </para>
	  </listitem>
	</varlistentry>
	
	<varlistentry>
	  <term><command>-Dfreetype=enabled</command></term>
	  <listitem>
	    <para>
	      Use the <ulink url="https://www.freetype.org/">FreeType</ulink> library. <emphasis>(Default = auto)</emphasis>
	    </para>
	    <para>
	      This option enables or disables usage of the FreeType
	      font-rendering library. The default setting is to check for the
	      presence of FreeType and, if it is found, build with
	      FreeType support.
	    </para>
	  </listitem>
	</varlistentry>
	
	<varlistentry>
	  <term><command>-Dgdi=enabled</command></term>
	  <listitem>
	    <para>
	      Use the <ulink
	      url="https://docs.microsoft.com/en-us/windows/desktop/intl/uniscribe">Uniscribe</ulink>
	      library (experimental). <emphasis>(Default = no)</emphasis>
	    </para>
	    <para>
	      This option enables or disables usage of the Uniscribe
	      font-rendering library. Uniscribe is available on
	      Windows systems. Uniscribe support is used only for
	      testing purposes and does not need to be enabled for
	      HarfBuzz to run on Windows systems.
	    </para>
	  </listitem>
	</varlistentry>
	
	<varlistentry>
	  <term><command>-Ddirectwrite=enabled</command></term>
	  <listitem>
	    <para>
	      Use the <ulink url="https://docs.microsoft.com/en-us/windows/desktop/directwrite/direct-write-portal">DirectWrite</ulink> library (experimental). <emphasis>(Default = no)</emphasis>
	    </para>
	    <para>
	      This option enables or disables usage of the DirectWrite
	      font-rendering library. DirectWrite is available on
	      Windows systems. DirectWrite support is used only for
	      testing purposes and does not need to be enabled for
	      HarfBuzz to run on Windows systems.
	    </para>
	  </listitem>
	</varlistentry>
	
	<varlistentry>
	  <term><command>-Dcoretext=enabled</command></term>
	  <listitem>
	    <para>
	      Use the <ulink url="https://developer.apple.com/documentation/coretext">CoreText</ulink> library. <emphasis>(Default = no)</emphasis>
	    </para>
	    <para>
	      This option enables or disables usage of the CoreText
	      library. CoreText is available on macOS and iOS systems.
	    </para>
	  </listitem>
	</varlistentry>	

	<varlistentry>
	  <term><command>-Ddocs=enabled</command></term>
	  <listitem>
	    <para>
	      Use <ulink url="https://github.com/GNOME/gtk-doc">GTK-Doc</ulink>. <emphasis>(Default = no)</emphasis>
	    </para>
	    <para>
	      This option enables the building of the documentation.
	    </para>
	  </listitem>
	</varlistentry>
      </variablelist>
    </section>
    
  </section>
</chapter>
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