Link error in c++ builder 6.0

[jacemont jhon]

Hi,
I am troubling from a small program with mysql in borland c++ builder 6.0.
Source code as follow.

#include <winsock.h>
#include "mysql.h"
#include "Unit1.h"


#pragma hdrstop
#pragma package(smart_init)
#pragma resource "*.dfm"

MYSQL mysql;
int dum;

TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)
{
mysql_init(NULL);
if (!(mysql_real_connect(&mysql,"localhost","root","root","mydatabase",0,NULL,0)))
{
ShowMessage("Connection failed.");
}
else
{
ShowMessage("Connection ");
}
mysql_close(&mysql);
}
//----


Link error :

[Linker Error] Unresolved external 'mysql_init' referenced from
[Linker Error] Unresolved external 'mysql_real_connect' referenced from
[Linker Error] Unresolved external 'mysql_close' referenced from

Help, thank you