在linux（gcc）下使用qt写入xml出错，代码如下：
错误如图：这里写图片描述
在网上找了好久没有找到答案，最后在http://stackoverflow.com/questions/14113923/rapidxml-print-header-has-undefined-methods找到了答案在rapidxml_print.hpp的第104行以后加上一些内容就好，
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_attributes(OutIt out, const xml_node<Ch> *node, int flags);
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_element_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);
原文链接http://stackoverflow.com/questions/14113923/rapidxml-print-header-has-undefined-methods
rapidxml版本是1.1.3
来源：oschina
链接：https://my.oschina.net/u/4393165/blog/4321696