whats wrong in my code or compile method my code is here?

#include <stdio.h>
#include <stdlib.h>
#include "mysql.h"

MYSQL mysql;
MYSQL_RES *res;
MYSQL_ROW row;

void exiterr(int exitcode)
{
fprintf( stderr, "%sn", mysql_error(&mysql) );
exit( exitcode );
}

int main()
{
uint i = 0;

if (!(mysql_connect(&mysql,"host","username","password")))
exiterr(1);

if (mysql_select_db(&mysql,"ksedata"))
exiterr(2);

if (mysql_query(&mysql,"SELECT name,rate FROM emp_master"))
exiterr(3);

if (!(res = mysql_store_result(&mysql)))
exiterr(4);

while((row = mysql_fetch_row(res))) {
for (i=0 ; i < mysql_num_fields(res); i++)
printf("%sn",row[i]);
}

if (!mysql_eof(res))
exiterr(5);

mysql_free_result(res);
mysql_close(&mysql);
}


***************************************
when i compile following code theser error messages come

undefined reference error mysql_connect(...)
undefined reference error mysql_bin(..)
etc...
whats wrong either my gcc is not link whith
client side lib or something else?
thanks in advance..