I tried to figure out myself but still can't figure out,
Basically there is two file, main.cpp, ParserDom.h. The ParserDom.h was located in the "html" folder which located same place as main.cpp
But when I compiled, I get error LNK2019: unresolved external symbol
which all of them referring to member function of ParserDom class. Can anyone figure out ?
I always get this kind of problem, can anyone give me some tips what is the causes and how can I avoid it in future ?
Thank you. The code was taken from http://htmlcxx.sourceforge.net/
using Visual Studion 2005
main.cpp file -
#include <iostream>
-
#include <string>
-
#include "html/ParserDom.h"
-
-
using namespace std;
-
using namespace htmlcxx;
-
-
-
int main()
-
{
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string html = "<html><body>hey</body></html>";
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HTML::ParserDom parser;
-
tree<HTML::Node> dom = parser.parseTree(html);
-
return 0;
-
}
ParserDom.h header file -
#ifndef __HTML_PARSER_DOM_H__
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#define __HTML_PARSER_DOM_H__
-
-
#include "ParserSax.h"
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#include "tree.h"
-
-
namespace htmlcxx
-
{
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namespace HTML
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{
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class ParserDom : public ParserSax
-
{
-
public:
-
ParserDom() {}
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~ParserDom() {}
-
-
const tree<Node> &parseTree(const std::string &html);
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const tree<Node> &getTree()
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{ return mHtmlTree; }
-
-
protected:
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virtual void beginParsing();
-
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virtual void foundTag(Node node, bool isEnd);
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virtual void foundText(Node node);
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virtual void foundComment(Node node);
-
-
virtual void endParsing();
-
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tree<Node> mHtmlTree;
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tree<Node>::iterator mCurrentState;
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};
-
-
std::ostream &operator<<(std::ostream &stream, const tree<HTML::Node> &tr);
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} //namespace HTML
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} //namespace htmlcxx
-
-
#endif
-
7  3534 
I think you simply forgot to link against a library that actually contains the compiled
definition of that ParserDom class. What do the docs say?
kind regards,
Jos
Thanks for the reply, really appreciate that. The project can be downloaded here http://sf.net/projects/htmlcxx
I guess, I have to install first, which I have not done yet, I saw those MakeFile which I encounter very often but have not yet know how to use it. I need to run the config file but what kind of shell i need to run ? can give a very brief instruction ? Thank you.
Thanks for the reply, really appreciate that. The project can be downloaded here http://sf.net/projects/htmlcxx
I guess, I have to install first, which I have not done yet,
That explains the unresolved external that your linker encounterd.
I saw those MakeFile which I encounter very often but have not yet know how to
use it. I need to run the config file but what kind of shell i need to run ? can give
a very brief instruction ? Thank you.
This is what I read from that download page:
Operating System: All POSIX (Linux/BSD/UNIX-like OSes), Linux
so, at least you should have cygwin or equivalent running if you're using a Windows
machine. Otherwise, simply run the configuration (just type in "make").
Most (if not all) proper Unix/Linux projects try to figure out what's available on
your system and they use that or they bail out if the project can't run on your
system. That's what the configuration part does. Most of the time it compiles
and installs the libraries and all the other stuff for you. If you're lucky these
projects even come with a proper manual ;-)
kind regards,
Jos
Thanks, I am using windows, so now I am using cywin for my very first time, change my directory to the sources file with "cd [DIRECTORY]" , after that I type "configure", gives command not found, can give me a little hint on running the configure in cywin, if you don't mind ? Really2 thank you.
Thanks, finally I get it to work, when I create header file and copy it from htmlcxx source file manually to include into my project. I don't use the configure or makefile at all, It works so graceful. Thanks.
Thanks, finally I get it to work, when I create header file and copy it from htmlcxx source file manually to include into my project. I don't use the configure or makefile at all, It works so graceful. Thanks.
Hm, you're not supposed to scrape the bits and pieces from another project's
source and header files each time you want to use something. btw, you typed
'configure'; what happens if/when you just type 'make'? There should be a clean
way to install that project on your machine. Any manual pages mayhap?
kind regards,
Jos
With Unix installations there are usually several steps to follow.
First check for an INSTALL or README file at the top source directory. This might have tips for your platform.
If one exists in the source directory, run the configure script. Sometimes the PATH variable is touchy and you need to run >> ./configure. This checks the system and can set up the makefiles for you.
If configure is successful, then run >> make.
After that, run >> make install. This will install the various parts of the program, usually to /usr/local/xxx.
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