public key cryptography

[Brahim]

hello
today i have read the book Cryptography in C and C++ (Michael Welschenbach)
i tried to use a function from the lib given by Authors , to generate prime number
the code is:

#include <cstdlib>
#include <iostream>
#include "_assert.h"
#include "flint.h"
#include "flintpp.h"
#include "kmul.h"
#include "ripemd.h"


using namespace std;

int main(int argc, char *argv[])
{
    LINT po;
   po=findprime(20,37);
    cerr << "a = " << po << endl;



    system("PAUSE");
    return EXIT_SUCCESS;
}

i use the compiler Dev c++ 4.9.9.2 , but i get that error
[Linker error] undefined reference to `LINT::LINT()'
[Linker error] undefined reference to `LINT::LINT(int)'
[Linker error] undefined reference to `findprime(unsigned short, LINT const&)'
[Linker error] undefined reference to `LINT:perator=(LINT const&)'
[Linker error] undefined reference to `operator<<(std:stream&, LINT const&)'
[Linker error] undefined reference to `purge_l'

the lib can be downloaded from Extra Materials - ISBN 978-1-893115-95-8

help me please
thank you

[GReaper]

Add the "libflint.a" file to your project's linking settings. It's been years since I used DevC++, so I don't remember how to, but the cmd-line equivalent is "-lflint".