undefined reference,gmp lib
I installed the gmp libraries in cygwin via its' installer.I tried to compile a simple program with gcc.

    #include <stdio.h>
    #include <stdlib.h>
    #include <gmp.h>
    

    int
    main(void)
    {
        mpz_t test;
        int i;
        
        printf("enter number\n");
        gmp_scanf("%Z",&test);
        gmp_printf("test=%Z",test);
        i=mpz_probab_prime_p(test,5);
        if(i)
            printf("prime\n");
        else
            printf("not prime\n");
        return 0;
    }

But I got this:

     /cygdrive/c/Users/xxxxx/Documents/NetBeansProjects/rsa_system/main.c:13: undefined reference to  `__imp____gmp_scanf'
This is the first time that I try to use a non-standard library and I'm getting confused here.My compiler is set to Cygwin and I've done all the installation part.Any ideas on what may be wrong?Thank you.
undefined reference,gmp lib
===

I installed the gmp libraries in cygwin via its' installer.I tried to compile a simple program with gcc.

    #include <stdio.h>
    #include <stdlib.h>
    #include <gmp.h>
    

    int
    main(void)
    {
        mpz_t test;
        int i;
        
        printf("enter number\n");
        gmp_scanf("%Z",&test);
        gmp_printf("test=%Z",test);
        i=mpz_probab_prime_p(test,5);
        if(i)
            printf("prime\n");
        else
            printf("not prime\n");
        return 0;
    }

But I got this:

     /cygdrive/c/Users/xxxxx/Documents/NetBeansProjects/rsa_system/main.c:13: undefined reference to  `__imp____gmp_scanf'
This is the first time that I try to use a non-standard library and I'm getting confused here.My compiler is set to Cygwin and I've done all the installation part.Any ideas on what may be wrong?Thank you.