From e18fe4eccd4fa74fcf89836d52d9cd737da85a02 Mon Sep 17 00:00:00 2001
From: artemp <artem@mapnik.org>
Date: Tue, 10 Jul 2012 12:49:14 +0100
Subject: [PATCH] + fix unused parameter warning

---
 include/mapnik/metawriter.hpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/mapnik/metawriter.hpp b/include/mapnik/metawriter.hpp
index 693a9059a..ac518d28e 100644
--- a/include/mapnik/metawriter.hpp
+++ b/include/mapnik/metawriter.hpp
@@ -144,7 +144,11 @@ public:
      */
     void set_size(int width, int height) { width_ = width; height_ = height; }
     /** Set Map object's srs. */
-    virtual void set_map_srs(projection const& proj) { /* Not required when working with image coordinates. */ }
+    virtual void set_map_srs(projection const& proj)
+    {
+        boost::ignore_unused_variable_warning(proj);
+    }
+
     /** Return the list of default properties. */
     metawriter_properties const& get_default_properties() const { return dflt_properties_;}
 protected: