Problem compiling the test sample from the libxml++ manual

[Akanksh Vashisth <a vashisth gmail com>]

Hello,

I am looking to investigate libxml++ as a probable XML parser, and have 
followed the instructions in manual for installation on Ubuntu (11.04) 
(using <sudo apt-get install libxml++2.6-dev libxml++2.6-doc>). 

It seems the the installation is alright(checked using <pkg-config libxml++-2.6 --modversion>:<2.33.1>) 

I have also got the command-line from pkg-config  for gcc(using <pkg-config libxml++-2.6 --cflags --libs>) which gave:
> -pthread 
> -I/usr/include/glib-2.0 
> -I/usr/lib/x86_64-linux-gnu/glib-2.0/include 
> -I/usr/include/libxml++-2.6 
> -I/usr/lib/libxml++-2.6/include 
> -I/usr/include/libxml2 
> -I/usr/include/glibmm-2.4 
> -I/usr/lib/glibmm-2.4/include 
> -I/usr/include/sigc++-2.0 
> -I/usr/lib/sigc++-2.0/include  
> -pthread -L/usr/lib/x86_64-linux-gnu 
> -lxml++-2.6 
> -lxml2 
> -lglibmm-2.4 
> -lgobject-2.0 
> -lsigc-2.0 
> -lgthread-2.0 
> -lrt correct
> -lglib-2.0

Trying to build the sample code for the DomParse given in the manual gives me error messages of the form:
> main.cpp|19|undefined reference to `typeinfo for xmlpp::ContentNode'
> main.cpp|23|undefined reference to `xmlpp::ContentNode::is_white_space() const'
> main.cpp|31|undefined reference to 
> `Glib::operator<<(std::basic_ostream<char, 
> std::char_traits<char> >&, Glib::ustring const&)'

Please see attached file for a complete log. Also I have attached my source file, and the code-blocks project which I am using for this test.
> Environment:
> > gcc version 4.5.2
> > Code::Blocks 10.05
> > Ubuntu 11.04
> >   

Can you kindly suggest what I may be doing wrong or missing?

Thanks,
Akanksh
-- 
-Akanksh Vashisth
||=== trials_01, Debug ===|
obj/Debug/main.o||In function `print_node(xmlpp::Node const*, unsigned int)':|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|19|undefined reference to `typeinfo for xmlpp::ContentNode'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|19|undefined reference to `typeinfo for xmlpp::Node'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|20|undefined reference to `typeinfo for xmlpp::TextNode'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|20|undefined reference to `typeinfo for xmlpp::Node'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|21|undefined reference to `typeinfo for xmlpp::CommentNode'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|21|undefined reference to `typeinfo for xmlpp::Node'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|23|undefined reference to `xmlpp::ContentNode::is_white_space() const'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|26|undefined reference to `xmlpp::Node::get_name() const'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|28|undefined reference to `Glib::ustring::empty() const'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|31|undefined reference to `xmlpp::Node::get_name() const'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|31|undefined reference to `Glib::operator<<(std::basic_ostream<char, std::char_traits<char> >&, Glib::ustring const&)'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|31|undefined reference to `Glib::ustring::~ustring()'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|32|undefined reference to `Glib::operator<<(std::basic_ostream<char, std::char_traits<char> >&, Glib::ustring const&)'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|44|undefined reference to `xmlpp::ContentNode::get_content() const'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|44|undefined reference to `Glib::operator<<(std::basic_ostream<char, std::char_traits<char> >&, Glib::ustring const&)'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|44|undefined reference to `Glib::ustring::~ustring()'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|49|undefined reference to `xmlpp::ContentNode::get_content() const'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|49|undefined reference to `Glib::operator<<(std::basic_ostream<char, std::char_traits<char> >&, Glib::ustring const&)'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|49|undefined reference to `Glib::ustring::~ustring()'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|54|undefined reference to `xmlpp::ContentNode::get_content() const'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|54|undefined reference to `Glib::operator<<(std::basic_ostream<char, std::char_traits<char> >&, Glib::ustring const&)'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|54|undefined reference to `Glib::ustring::~ustring()'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|56|undefined reference to `typeinfo for xmlpp::Element'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|56|undefined reference to `typeinfo for xmlpp::Node'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|62|undefined reference to `xmlpp::Node::get_line() const'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|65|undefined reference to `xmlpp::Element::get_attributes() const'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|70|undefined reference to `xmlpp::Attribute::get_value() const'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|70|undefined reference to `xmlpp::Attribute::get_name() const'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|70|undefined reference to `Glib::operator<<(std::basic_ostream<char, std::char_traits<char> >&, Glib::ustring const&)'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|70|undefined reference to `Glib::operator<<(std::basic_ostream<char, std::char_traits<char> >&, Glib::ustring const&)'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|70|undefined reference to `Glib::ustring::~ustring()'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|70|undefined reference to `Glib::ustring::~ustring()'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|73|undefined reference to `Glib::ustring::ustring()'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|73|undefined reference to `Glib::ustring::ustring(char const*)'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|73|undefined reference to `xmlpp::Element::get_attribute(Glib::ustring const&, Glib::ustring const&) const'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|73|undefined reference to `Glib::ustring::~ustring()'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|73|undefined reference to `Glib::ustring::~ustring()'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|76|undefined reference to `xmlpp::Attribute::get_value() const'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|76|undefined reference to `Glib::operator<<(std::basic_ostream<char, std::char_traits<char> >&, Glib::ustring const&)'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|76|undefined reference to `Glib::ustring::~ustring()'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|84|undefined reference to `Glib::ustring::ustring()'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|84|undefined reference to `xmlpp::Node::get_children(Glib::ustring const&) const'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|84|undefined reference to `Glib::ustring::~ustring()'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|26|undefined reference to `Glib::ustring::~ustring()'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|31|undefined reference to `Glib::ustring::~ustring()'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|44|undefined reference to `Glib::ustring::~ustring()'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|49|undefined reference to `Glib::ustring::~ustring()'|
obj/Debug/main.o:/home/akanksh/Documents/codeblocks/trials_01/main.cpp|54|more undefined references to `Glib::ustring::~ustring()' follow|
obj/Debug/main.o||In function `main':|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|102|undefined reference to `xmlpp::DomParser::DomParser()'|
/home/akanksh/Documents/codeblocks/trials_01/main.cpp|103|undefined reference to `xmlpp::Parser::set_validate(bool)'|
||More errors follow but not being shown.|
||Edit the max errors limit in compiler options...|
||=== Build finished: 50 errors, 0 warnings ===|

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <libxml++/libxml++.h>

#include <iostream>

void print_indentation(unsigned int indentation)
{
  for(unsigned int i = 0; i < indentation; ++i)
    std::cout << " ";
}

void print_node(const xmlpp::Node* node, unsigned int indentation = 0)
{
  std::cout << std::endl; //Separate nodes by an empty line.

  const xmlpp::ContentNode* nodeContent = dynamic_cast<const xmlpp::ContentNode*>(node);
  const xmlpp::TextNode* nodeText = dynamic_cast<const xmlpp::TextNode*>(node);
  const xmlpp::CommentNode* nodeComment = dynamic_cast<const xmlpp::CommentNode*>(node);

  if(nodeText && nodeText->is_white_space()) //Let's ignore the indenting - you don't always want to do this.
    return;

  Glib::ustring nodename = node->get_name();

  if(!nodeText && !nodeComment && !nodename.empty()) //Let's not say "name: text".
  {
    print_indentation(indentation);
    std::cout << "Node name = " << node->get_name() << std::endl;
    std::cout << "Node name = " << nodename << std::endl;
  }
  else if(nodeText) //Let's say when it's text. - e.g. let's say what that white space is.
  {
    print_indentation(indentation);
    std::cout << "Text Node" << std::endl;
  }

  //Treat the various node types differently:
  if(nodeText)
  {
    print_indentation(indentation);
    std::cout << "text = \"" << nodeText->get_content() << "\"" << std::endl;
  }
  else if(nodeComment)
  {
    print_indentation(indentation);
    std::cout << "comment = " << nodeComment->get_content() << std::endl;
  }
  else if(nodeContent)
  {
    print_indentation(indentation);
    std::cout << "content = " << nodeContent->get_content() << std::endl;
  }
  else if(const xmlpp::Element* nodeElement = dynamic_cast<const xmlpp::Element*>(node))
  {
    //A normal Element node:

    //line() works only for ElementNodes.
    print_indentation(indentation);
    std::cout << "     line = " << node->get_line() << std::endl;

    //Print attributes:
    const xmlpp::Element::AttributeList& attributes = nodeElement->get_attributes();
    for(xmlpp::Element::AttributeList::const_iterator iter = attributes.begin(); iter != attributes.end(); ++iter)
    {
      const xmlpp::Attribute* attribute = *iter;
      print_indentation(indentation);
      std::cout << "  Attribute " << attribute->get_name() << " = " << attribute->get_value() << std::endl;
    }

    const xmlpp::Attribute* attribute = nodeElement->get_attribute("title");
    if(attribute)
    {
      std::cout << "title found: =" << attribute->get_value() << std::endl;

    }
  }

  if(!nodeContent)
  {
    //Recurse through child nodes:
    xmlpp::Node::NodeList list = node->get_children();
    for(xmlpp::Node::NodeList::iterator iter = list.begin(); iter != list.end(); ++iter)
    {
      print_node(*iter, indentation + 2); //recursive
    }
  }
}

int main(int argc, char* argv[])
{
  std::string filepath;
  if(argc > 1 )
    filepath = argv[1]; //Allow the user to specify a different XML file to parse.
  else
    filepath = "example.xml";

  try
  {
    xmlpp::DomParser parser;
    parser.set_validate();
    parser.set_substitute_entities(); //We just want the text to be resolved/unescaped automatically.
    parser.parse_file(filepath);
    if(parser)
    {
      //Walk the tree:
      const xmlpp::Node* pNode = parser.get_document()->get_root_node(); //deleted by DomParser.
      print_node(pNode);
    }
  }
  catch(const std::exception& ex)
  {
    std::cout << "Exception caught: " << ex.what() << std::endl;
  }

  return 0;
}

Attachment: trials_01.cbp
Description: application/codeblocks