--- rapidxml_print.hpp.orig	2015-06-21 15:46:43.330070116 +0200
+++ rapidxml_print.hpp	2015-06-21 15:50:58.745053512 +0200
@@ -102,6 +102,20 @@
         ///////////////////////////////////////////////////////////////////////////
         // Internal printing operations
     
+        // =====================================
+        // fix for clang for this bug in gcc and others: https://sourceforge.net/p/rapidxml/bugs/16/
+
+        template<class OutIt, class Ch> inline OutIt print_children(OutIt out, const xml_node<Ch> *node, int flags, int indent);
+        template<class OutIt, class Ch> inline OutIt print_element_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);
+        template<class OutIt, class Ch> inline OutIt print_data_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);
+        template<class OutIt, class Ch> inline OutIt print_cdata_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);
+        template<class OutIt, class Ch> inline OutIt print_declaration_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);
+        template<class OutIt, class Ch> inline OutIt print_comment_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);
+        template<class OutIt, class Ch> inline OutIt print_doctype_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);
+        template<class OutIt, class Ch> inline OutIt print_pi_node(OutIt out, const xml_node<Ch> *node, int flags, int indent);
+
+        // =====================================
+
         // Print node
         template<class OutIt, class Ch>
         inline OutIt print_node(OutIt out, const xml_node<Ch> *node, int flags, int indent)