From 83f6557a9ca54ab1a1cd66220f4b584a6d885a97 Mon Sep 17 00:00:00 2001
From: Olivier Courtin <olivier.courtin@camptocamp.com>
Date: Sat, 11 May 2013 13:24:16 +0000
Subject: [PATCH] Related to #2321. SFCGAL doc entry in installation.xml.

git-svn-id: http://svn.osgeo.org/postgis/trunk@11419 b70326c6-7e19-0410-871a-916f4a2858ee
---
 doc/installation.xml | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/doc/installation.xml b/doc/installation.xml
index 5cea12412..bfeb9e8ab 100644
--- a/doc/installation.xml
+++ b/doc/installation.xml
@@ -156,6 +156,14 @@ psql -d yourdatabase -f doc/topology_comments.sql</programlisting>
 		</para>
 	  </listitem>
 	  
+	  <listitem>
+		<para>
+                  SFCGAL, version 0.2 (or higher) could be used to provide additional 2D and 3D advanced analysis functions to PostGIS cf <xref linkend="reference_sfcgal" />. And also allow to use SFCGAL rather than GEOS for some 2D functions provided by both backends (like ST_Intersection or ST_Area, for instance). A PostgreSQL configuration variable <code>postgis.backend</code> allow end user to control which backend he want to use if SFCGAL is installed (GEOS by default). Nota: SFCGAL 0.2 require at least CGAL 4.1.
+
+		  <ulink url="https://github.com/Oslandia/SFCGAL">https://github.com/Oslandia/SFCGAL</ulink>.
+		</para>
+	  </listitem>
+
 	  <listitem>
 		<para>
 		 CUnit (<filename>CUnit</filename>). This is needed for regression testing. <ulink url="http://cunit.sourceforge.net/">http://cunit.sourceforge.net/</ulink>
-- 
2.40.0