source: general/graphlib/poppler.xml@ 79c7118

<?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 poppler-download-http "https://poppler.freedesktop.org/poppler-&poppler-version;.tar.xz">
  <!ENTITY poppler-download-ftp  " ">
  <!ENTITY poppler-md5sum        "a9f302feb3b79a99f66fa9d1e4af49ac">
  <!ENTITY poppler-size          "1.8 MB">
  <!ENTITY poppler-buildsize     "87 MB (with Qt6 library; add 13 MB for tests)">
  <!ENTITY poppler-time          "1.2 SBU (with parallelism=4, tests, and Qt6 library)">
  <!-- For poppler 24.05.0 All 65 tests passed in 1.8 seconds -->

  <!ENTITY poppler-data-version       "0.4.12">

  <!ENTITY poppler-data-download-http "https://poppler.freedesktop.org/poppler-data-&poppler-data-version;.tar.gz">
  <!ENTITY poppler-data-md5sum        "67ee4a40aa830b1f6e2560ce5f6471ba">
  <!ENTITY poppler-data-size          "4.3 MB">
  <!ENTITY poppler-data-buildsize     "26 MB">
  <!ENTITY poppler-data-time          "less than 0.1 SBU">
]>

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


  <title>Poppler-&poppler-version;</title>

  <indexterm zone="poppler">
    <primary sortas="a-Poppler">Poppler</primary>
  </indexterm>

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

    <para>
      The <application>Poppler</application> package contains a PDF rendering
      library and command line tools used to manipulate PDF files. This is
      useful for providing PDF rendering functionality as a shared library.
    </para>

    &lfs121_checked;

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

    <bridgehead renderas="sect3">Additional Downloads</bridgehead>

    <itemizedlist spacing="compact">
      <title>Poppler Encoding Data</title>
      <listitem>
        <para>
          Download (HTTP): <ulink url="&poppler-data-download-http;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download MD5 sum: &poppler-data-md5sum;
        </para>
      </listitem>
      <listitem>
        <para>
          Download size: &poppler-data-size;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated disk space required: &poppler-data-buildsize;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated build time: &poppler-data-time;
        </para>
      </listitem>
    </itemizedlist>

    <para>
      The additional package consists of encoding files for use with
      <application>Poppler</application>. The encoding files are optional and
      <application>Poppler</application> will automatically read them if they
      are present. When installed, they enable
      <application>Poppler</application> to render CJK and Cyrillic properly.
    </para>

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

    <bridgehead renderas="sect4">Required</bridgehead>
    <para role="required">
      <xref linkend="cmake"/>,
      <xref linkend="fontconfig"/>, and
      &gobject-introspection;
    </para>

    <bridgehead renderas="sect4">Recommended</bridgehead>
    <para role="recommended">
      <xref linkend="boost"/>,
      <xref linkend="cairo"/>,
      <xref linkend="gpgme"/>,
      <xref linkend="lcms2"/>,
      <xref linkend="libjpeg"/>,
      <xref linkend="libpng"/>,
      <xref linkend="libtiff"/>,
      <xref linkend="nss"/>,
      <xref linkend="openjpeg2"/>, and
      <xref linkend="qt6"/>
      (required for PDF support in <xref role="nodep" linkend="okular"/>)
    </para>

    <bridgehead renderas="sect4">Optional</bridgehead>
    <para role="optional">
      <xref linkend="curl"/>,
      <xref linkend="gdk-pixbuf"/>,
      <xref linkend="git"/> (for downloading test files),
      <xref linkend="gtk-doc"/>,
      <xref linkend="gtk3"/>, and
      &qt5-deps;
    </para>

  </sect2>

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

    <para>
      First, conditionalize C++20 only code to fix non C++20 builds that 
      don't use the affected methods.
    </para>

<screen><userinput>sed -e '/::starts/i #if __cplusplus >= 202002L'\
    -e '/::ends/a #endif'                      \
    -i goo/GooString.h</userinput></screen>

    <para>
      Now, install <application>Poppler</application> by running the following
      commands:
    </para>

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

cmake  -DCMAKE_BUILD_TYPE=Release   \
       -DCMAKE_INSTALL_PREFIX=/usr  \
       -DTESTDATADIR=$PWD/testfiles \
       -DENABLE_QT5=OFF             \
       -DENABLE_UNSTABLE_API_ABI_HEADERS=ON \
       ..                           &amp;&amp;
make</userinput></screen>

    <para>
      In order to run the test suite, some testcases are needed and can
      be obtained only from a git repository. The command to download
      them is:
<command>git clone --depth 1 https://gitlab.freedesktop.org/poppler/test.git testfiles</command>.
      Then issue: <command>LC_ALL=en_US.UTF-8 make test</command>.
    </para>

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

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

    <para>
      To install the documentation, run the following commands as
      <systemitem class="username">root</systemitem>:
    </para>

<screen role="root"><userinput>install -v -m755 -d           /usr/share/doc/poppler-&poppler-version; &amp;&amp;
cp -vr ../glib/reference/html /usr/share/doc/poppler-&poppler-version;</userinput></screen>

<!-- ==== Poppler Data ====== -->
    <bridgehead renderas="sect3">Poppler Data</bridgehead>

    <para>
      If you downloaded the additional encoding data package, install it by
      issuing the following commands:
    </para>

<screen><userinput>tar -xf ../../poppler-data-&poppler-data-version;.tar.gz &amp;&amp;
cd poppler-data-&poppler-data-version;</userinput></screen>

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

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

  </sect2>

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

    <para>
      <parameter>-DCMAKE_BUILD_TYPE=Release</parameter>: This switch is used
      to apply a higher level of compiler optimizations.
    </para>

    <para>
      <parameter>-DTESTDATADIR=$PWD/testfiles</parameter>: Tells the test
      programs where the auxiliary files are located.
    </para>
<!--
    <para>
      <parameter>-DENABLE_QT5=OFF</parameter>: This switch is needed to
      prevent an error when Qt5 is not installed. Remove it if you
      have installed <xref linkend="qt6" role="nodep"/>.
    </para>
-->
    <para>
      <parameter>-DENABLE_UNSTABLE_API_ABI_HEADERS=ON</parameter>: Installs some old
      <application>Xpdf</application> headers required by certain programs.
      <!--(e.g. <application>Inkscape</application>).-->
    </para>

    <para>
      <option>-DENABLE_GTK_DOC=ON</option>: Use this parameter if
      GTK-Doc <!--and Pygments--> is installed and you wish to rebuild and
      install the API documentation.
    </para>

    <para>
      <option>-DENABLE_QT5=OFF</option>: Use this parameter if
      &qt5-deps; is not installed. 
    </para>

    <para>
      <option>-DENABLE_BOOST=OFF</option>: Use this parameter if you have
      not installed <application>boost</application> (the Splash backend for
      Qt5 recommends boost).
    </para>

    <para>
      <option>-DENABLE_NSS3=OFF</option>: Use this parameter if you have
      not installed <application>nss</application>.
    </para>

    <para>
      <option>-DENABLE_GPGME=OFF</option>: Use this parameter if you have
      not installed <application>gpgme</application>.
    </para>

    <para>
      <option>-DENABLE_LIBTIFF=OFF</option>: Use this parameter if you have
      not installed <application>libtiff</application>.
    </para>

    <para>
      <command>LC_ALL=en_US.UTF-8 make test</command>: Runs the test suite.
      The environment variable LC_ALL=en_US.UTF-8 is only needed if the
      default locale does not include UTF-8.
    </para>

  </sect2>

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

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

      <seglistitem>
        <seg>
          pdfattach, pdfdetach, pdffonts, pdfimages, pdfinfo, pdfseparate,
          pdfsig, pdftocairo, pdftohtml, pdftoppm, pdftops, pdftotext, and
          pdfunite
        </seg>
        <seg>
          libpoppler.so,
          libpoppler-cpp.so,
          libpoppler-glib.so,
          libpoppler-qt5.so, and
          (optionally) libpoppler-qt6.so
        </seg>
        <seg>
          /usr/include/poppler,
          /usr/share/poppler, and
          /usr/share/doc/poppler-&poppler-version;
        </seg>
      </seglistitem>
    </segmentedlist>

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

      <varlistentry id="pdfattach">
        <term><command>pdfattach</command></term>
        <listitem>
          <para>
            adds a new embedded file to an existing PDF file
          </para>
          <indexterm zone="poppler pdfattach">
            <primary sortas="b-pdfattach">pdfattach</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pdfdetach">
        <term><command>pdfdetach</command></term>
        <listitem>
          <para>
            lists or extracts embedded files from PDF files
          </para>
          <indexterm zone="poppler pdfdetach">
            <primary sortas="b-pdfdetach">pdfdetach</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pdffonts">
        <term><command>pdffonts</command></term>
        <listitem>
          <para>
            lists the fonts used in a PDF file along with various information
            for each font
          </para>
          <indexterm zone="poppler pdffonts">
            <primary sortas="b-pdffonts">pdffonts</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pdfimages">
        <term><command>pdfimages</command></term>
        <listitem>
          <para>
            saves images from a PDF file as PPM, PBM, or JPEG files
          </para>
          <indexterm zone="poppler pdfimages">
            <primary sortas="b-pdfimages">pdfimages</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pdfinfo">
        <term><command>pdfinfo</command></term>
        <listitem>
          <para>
            prints the contents of the 'Info' dictionary (plus some other useful
            information) from a PDF file
          </para>
          <indexterm zone="poppler pdfinfo">
            <primary sortas="b-pdfinfo">pdfinfo</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pdfseparate">
        <term><command>pdfseparate</command></term>
        <listitem>
          <para>
            extracts single pages from a PDF file
          </para>
          <indexterm zone="poppler pdfseparate">
            <primary sortas="b-pdseparate">pdfseparate</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pdfsig">
        <term><command>pdfsig</command></term>
        <listitem>
          <para>
            verifies the digital signatures in a PDF document
          </para>
          <indexterm zone="poppler pdfsig">
            <primary sortas="b-pdseparate">pdfsig</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pdftocairo">
        <term><command>pdftocairo</command></term>
        <listitem>
          <para>
            converts a PDF file to one of several formats (PNG, JPEG, PDF, PS,
            EPS, SVG) using the cairo output device of the poppler library
          </para>
          <indexterm zone="poppler pdftocairo">
            <primary sortas="b-pdftocairo">pdftocairo</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pdftohtml">
        <term><command>pdftohtml</command></term>
        <listitem>
          <para>
            converts a PDF file to HTML
          </para>
          <indexterm zone="poppler pdftohtml">
            <primary sortas="b-pdftohtml">pdftohtml</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pdftoppm">
        <term><command>pdftoppm</command></term>
        <listitem>
          <para>
            converts PDF files to PBM, PGM and PPM formats
          </para>
          <indexterm zone="poppler pdftoppm">
            <primary sortas="b-pdftoppm">pdftoppm</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pdftops">
        <term><command>pdftops</command></term>
        <listitem>
          <para>
            converts PDF files to Postscript format
          </para>
          <indexterm zone="poppler pdftops">
            <primary sortas="b-pdftops">pdftops</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pdftotext">
        <term><command>pdftotext</command></term>
        <listitem>
          <para>
            converts PDF files to plain text
          </para>
          <indexterm zone="poppler pdftotext">
            <primary sortas="b-pdftotext">pdftotext</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="pdfunite">
        <term><command>pdfunite</command></term>
        <listitem>
          <para>
            merges several PDF files, in the order of their occurrence on the
            command line, to one PDF output file
          </para>
          <indexterm zone="poppler pdfunite">
            <primary sortas="b-pdfunite">pdfunite</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libpoppler">
        <term><filename class="libraryfile">libpoppler.so</filename></term>
        <listitem>
          <para>
            contains the API functions to render PDF files
          </para>
          <indexterm zone="poppler libpoppler">
            <primary sortas="c-libpoppler">libpoppler.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libpoppler-cpp">
        <term><filename class="libraryfile">libpoppler-cpp.so</filename></term>
        <listitem>
          <para>
            is a C++ backend for rendering PDF files
          </para>
          <indexterm zone="poppler libpoppler-cpp">
            <primary sortas="c-libpoppler-cpp">libpoppler-cpp.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libpoppler-glib">
        <term><filename class="libraryfile">libpoppler-glib.so</filename></term>
        <listitem>
          <para>
            is a wrapper library used to interface the PDF rendering functions
            with <application>GTK+</application>
          </para>
          <indexterm zone="poppler libpoppler-glib">
            <primary sortas="c-libpoppler-glib">libpoppler-glib.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libpoppler-qt5">
        <term><filename class="libraryfile">libpoppler-qt5.so</filename></term>
        <listitem>
          <para>
            is a wrapper library used to interface the PDF rendering functions
            with <application>Qt</application>5
          </para>
          <indexterm zone="poppler libpoppler-qt5">
            <primary sortas="c-libpoppler-qt5">libpoppler-qt5.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libpoppler-qt6">
        <term><filename class="libraryfile">libpoppler-qt6.so</filename></term>
        <listitem>
          <para>
            is a wrapper library used to interface the PDF rendering functions
            with <application>Qt</application>6
          </para>
          <indexterm zone="poppler libpoppler-qt6">
            <primary sortas="c-libpoppler-qt6">libpoppler-qt6.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>