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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.10 $ -->
<section id="image.installation">
&reftitle.install;
<para>
To enable GD-support configure PHP
<option role="configure">--with-gd[=DIR]</option>, where DIR is the GD base
install directory. To use the recommended bundled version of the GD library
(which was first bundled in PHP 4.3.0), use the configure option
<option role="configure">--with-gd</option>.
GD library requires <productname>libpng</productname> and
<productname>libjpeg</productname> to compile.
</para>
<para>
In Windows, you'll include the GD2 DLL <filename>php_gd2.dll</filename> as
an extension in &php.ini;. The GD1 DLL <filename>php_gd.dll</filename> was
removed in PHP 4.3.2. Also note that the preferred truecolor image
functions, such as <function>imagecreatetruecolor</function>, require GD2.
</para>
<note>
<para>
To enable exif support in Windows, php_mbstring.dll must be loaded prior
to php_exif.dll in php.ini.
</para>
</note>
<para id="image.configure.php3">
To disable GD support in <emphasis>PHP 3</emphasis> add
<option role="configure">--without-gd</option> to your configure line.
</para>
<para>
Enhance the capabilities of GD to handle more image formats by specifying
the <literal>--with-XXXX</literal> configure switch to your PHP configure
line.
<table>
<title>Supported image formats</title>
<tgroup cols="2">
<thead>
<row>
<entry>Image Format</entry>
<entry>Configure Switch</entry>
</row>
</thead>
<tbody>
<row>
<entry><literal>jpeg-6b</literal></entry>
<entry>
To enable support for jpeg-6b add
<option role="configure">--with-jpeg-dir=DIR</option>.
</entry>
</row>
<row>
<entry><literal>png</literal></entry>
<entry>
To enable support for png add
<option role="configure">--with-png-dir=DIR</option>. Note, libpng
requires the <link linkend="zlib.requirements">zlib library</link>,
therefore add <option role="configure">--with-zlib-dir[=DIR]</option>
to your configure line.
</entry>
</row>
<row>
<entry><literal>xpm</literal></entry>
<entry>
To enable support for xpm add
<option role="configure">--with-xpm-dir=DIR</option>. If configure
is not able to find the required libraries, you may add the path to
your X11 libraries.
</entry>
</row>
</tbody>
</tgroup>
</table>
<note>
<simpara>
When compiling PHP with libpng, you must use the same version that was
linked with the GD library.
</simpara>
</note>
</para>
<para>
Enhance the capabilities of GD to deal with different fonts by specifying
the <literal>--with-XXXX</literal> configure switch to your PHP configure
line.
<table>
<title>Supported font libraries</title>
<tgroup cols="2">
<thead>
<row>
<entry>Font library</entry>
<entry>Configure Switch</entry>
</row>
</thead>
<tbody>
<row>
<entry><literal>FreeType 1.x</literal></entry>
<entry>
To enable support for FreeType 1.x add
<option role="configure">--with-ttf[=DIR]</option>.
</entry>
</row>
<row>
<entry><literal>FreeType 2</literal></entry>
<entry>
To enable support for FreeType 2 add
<option role="configure">--with-freetype-dir=DIR</option>.
</entry>
</row>
<row>
<entry><literal>T1lib</literal></entry>
<entry>
To enable support for T1lib (Type 1 fonts) add
<option role="configure">--with-t1lib[=DIR]</option>.
</entry>
</row>
<row>
<entry><literal>Native TrueType string function</literal></entry>
<entry>
To enable support for native TrueType string function add
<option role="configure">--enable-gd-native-ttf</option>.
</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
</section>
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