Subj : Re: I am using Borland C++4.52 and having a linking issus
To   : borland.public.cpp.borlandcpp
From : James Kim <james.kim@hhea.hitachi.com>
Date : Tue Jul 29 2003 12:23 pm


You wrote:
What does the code look like where you actually create a test object?
---------------------------------------------------------------------------------------------

See the bottom of this message for the code detail.(a little differnt from
the code I showed in my first message)
I tried "new" and it didn't work either. The exactly same linking error was
shown:
>>tlink /m /v /s startup.obj Number.obj test.obj, test.exe, test.map
>> Error: Undefined symbol operator new(unsigned int) in module TEST.CPP

Borland C++4.52 Compiler seems to fail to link whenever I use C++ related
utilities such as "constructor" and "new".


---------------------------------------------------------------------------------------------

Number.h
---------------------------------------------------------------------------------------------

#ifndef _NUMBER_H
#define _NUMBER_H

class Number
{
    public:
        Number( );
        void PrintValue(int Value );
}

---------------------------------------------------------------------------------------------

Number.cpp
---------------------------------------------------------------------------------------------

#include "Number.h"

void Number::PrintValue(int Value )
{
    // Do nothing
}

---------------------------------------------------------------------------------------------

Test.cpp
---------------------------------------------------------------------------------------------

#include "Number.h"

void main( )
{
    Number* psMyNumber;
    psMyNumber = new Number( );

    psMyNumber->PrintValue(5);
}

1) First of all, the above code would have two linking errors:
>>tlink /m /v /s startup.obj Number.obj test.obj, test.exe, test.map
>> Error: Undefined symbol operator new(unsigned int) in module NUMBER.CPP
This is because I have a constructor.

>>tlink /m /v /s startup.obj Number.obj test.obj, test.exe, test.map
>> Error: Undefined symbol operator new(unsigned int) in module TEST.CPP
This is because I am using "new".

2) If I comment out the constructor in Number.h and not use "new", linking
works perfectly with the
following main function:
void main( )
{
    Number myNumber;
    myNumber.PrintValue(5);
}

Would this have to do with my startup code? or am I missing something in
linking?

.