=====================================
Packages required do build *pdf2djvu*
=====================================

DjVuLibre
=========
DjVuLibre_ is an implementation of DjVu_, including viewers, browser
plugins, decoders, simple encoders, and utilities.

Compatiblity
------------
DjVuLibre 3.5.21 or newer is required. For Debian/Ubuntu, 3.5.20-5 is
sufficient.

.. _DjVuLibre:
   http://djvu.sourceforge.net/
.. _DjVu:
   http://djvu.org/

poppler
=======
Poppler_ is a PDF rendering library derived from xpdf.

.. _poppler:
   http://poppler.freedesktop.org/

Header files
------------
You will need some ``*.h`` files which are not installed by default
(``make install``) unless you use the ``--enable-xpdf-headers``
configure option. Alternatively, you may use the
``tools/install-poppler-h-files`` script to install them afterwards.

Note that some Linux distributions are already shipping those files.

Compatibility
-------------
Poppler 0.7.3 or newer is required.

Security warning
----------------
Every upstream poppler version prior to 0.10.6 is affected by at least
one serious security bug. **You have been warned**.


PStreams (recommended)
=======================
PStreams_ allows you to run another program from your C++ application
and to transfer data between the two programs, similar to shell
pipelines.

.. _PStreams:
   http://pstreams.sourceforge.net/

GNOME XSLT library (recommended)
================================

Libxslt_ is the XSLT C library developed for the GNOME project.

This library is required to correctly deal with XMP metadata.

.. _Libxslt:
   http://xmlsoft.org/xslt/

GraphicsMagick (optional)
=========================
GraphicsMagick_ is a library to read, write, and manipulate images.

.. _GraphicsMagick:
   http://www.graphicsmagick.org/

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