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[help-cgicc] Annoying problem...

From: Spam
Subject: [help-cgicc] Annoying problem...
Date: Sat, 19 Oct 2002 15:19:50 -0400 
Ok, here is my situation:  I am in the process of creating a Text
Database that will use XML files to imitate a database.  It will be used
in CGI applications.  I created a very simple structure on my own
computer using Microsoft Visual Studio 6.  Then, all I want to do is
upload those files, and use g++ on the server to compile the code into
the actual CGI file.  The whole thing works perfectly fine on my
computer, but when I try to use g++, I get the following errors:

bash-2.05$ g++ try.cpp
/tmp/ccACQPoE.o: In function `main':
/tmp/ccACQPoE.o(.text+0x2e): undefined reference to
`textdb::TextDB::TextDB(void)'
/tmp/ccACQPoE.o(.text+0x57): undefined reference to
`textdb::TextDB::connect(basic_string<char, string_char_traits<char>,
__default_alloc_template<true, 0> >)'
/tmp/ccACQPoE.o(.text+0x149): undefined reference to
`textdb::TextDBException::TextDBException(textdb::TextDBException const
&)'
collect2: ld returned 1 exit status

Here are all of the files.  There are 5 in all, and each file is noted:

PLEASE, any help will be very appreciated, I spent all yesterday
searching the internet for a possible solution to this, and I couldn't
find anything.  Is it a problem with the linker or something?

here is my g++ version:

bash-2.05$ g++ -v
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/2.96/specs
gcc version 2.96 20000731 (Red Hat Linux 7.2 2.96-108.7.2)

***********
* try.cpp *
***********

#include <string>
#include <cstdio>
#include "textdb.h"
#include "textdbex.h"

using namespace std;

int main() {
        printf("Content-type: text/html\n\n");
        
printf("<html>\n<head>\n<title>TextDB</title>\n</head>\n<body>\n");
        try {
                textdb::TextDB db;
                db.connect("");
        } catch(textdb::TextDBException &ex) {
                printf("TextDBConnectionException: %s",ex.what());
                throw ex;
        }
        printf("\nWorks");
        printf("\n</body>\n</html>\n");
        return 0;
}

************
* textdb.h *
************

#ifndef _TEXTDB_H
#define _TEXTDB_H

#include <string>
#include "textdbex.h"

using namespace std;

namespace textdb {
        class TextDB {
                public:
                        TextDB();

                        void connect(string directory);
                protected:
                        string db_location;
        };
}

#endif

**************
* textdb.cpp *
**************

#include <string>
#include "textdbex.h"
#include "textdb.h"

using namespace std;

namespace textdb {
        TextDB::TextDB() {
                db_location = "";
        }

        void TextDB::connect(string directory) throw(TextDBException) {
                if(directory == "") {
                        throw TextDBConnectionException("Database
directory not provided.");
                }
        }
}

**************
* textdbex.h *
**************

#ifndef _TEXTDBEX_H
#define _TEXTDBEX_H

#include <string>

using namespace std;

namespace textdb {
        class TextDBException {
                public:
                        TextDBException();
                        TextDBException(const string &);
                        TextDBException(const TextDBException &);
                        virtual const char* what() const {return
msg.c_str();};

                protected:
                        string msg;
        };

        class TextDBConnectionException : public TextDBException {
                public:
                        TextDBConnectionException();
                        TextDBConnectionException(const string &);
                        TextDBConnectionException(const
TextDBConnectionException &);
        };
}

#endif

****************
* textdbex.cpp *
****************

#include <string>
#include "textdbex.h"

using namespace std;

namespace textdb {
        /*
                TextDBException Class
        */
        TextDBException::TextDBException() {
                msg = "";
        }

        TextDBException::TextDBException(const string &_msg) {
                msg = _msg;
        }

        TextDBException::TextDBException(const TextDBException &tdbe) {
                msg = tdbe.msg;
        }

        /*
                TextDBConnectionException Class
        */
        TextDBConnectionException::TextDBConnectionException()
                : TextDBException()
        {}

        TextDBConnectionException::TextDBConnectionException(const
string &_msg)
                : TextDBException(_msg)
        {}

        TextDBConnectionException::TextDBConnectionException(const
TextDBConnectionException &_tdbce)
                : TextDBException(_tdbce)
        {}
}
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