Added headers required on Mac OS - not sure why not on Linux.

include/mapnik/xml_loader.hpp

@@ -23,6 +23,9 @@
 #ifndef MAPNIK_LIBXML2_LOADER_HPP
 #define MAPNIK_LIBXML2_LOADER_HPP
 
+// mapnik
+#include <mapnik/config.hpp> // for MAPNIK_DECL
+
 // stl
 #include <string>
 

include/mapnik/xml_node.hpp

@@ -23,6 +23,9 @@
 #ifndef MAPNIK_XML_NODE_H
 #define MAPNIK_XML_NODE_H
 
+//mapnik
+#include <mapnik/config.hpp> // for MAPNIK_DECL
+
 //boost
 #include <boost/optional.hpp>
 

test/unit/serialization/xml_parser_trim.cpp

@@ -1,6 +1,7 @@
 #include "catch.hpp"
 
 #include <mapnik/debug.hpp>
+#include <mapnik/value.hpp>
 #include <mapnik/xml_tree.hpp>
 #include <mapnik/xml_loader.hpp>