LinuxQuestions.org - undefined reference?

Hi people,

I am very new to coding in c++ and dont understand what this error means, google has been little help. Here is my code can you please tell me why when i compile i get the following error

Error:

Code:

[alan@localhost work]$ gcc ldap.c -o ldap

/tmp/ccijpbPB.o(.text+0x1e): In function `main':

: undefined reference to `ldap_init'

/tmp/ccijpbPB.o(.text+0x52): In function `main':

: undefined reference to `ldap_simple_bind_s'

/tmp/ccijpbPB.o(.text+0x6c): In function `main':

: undefined reference to `ldaperr2string'

collect2: ld returned 1 exit status

Code:

#include <stdio.h>

#include <ldap.h>



#define HOSTNAME "localhost"

#define PORT_NUMBER 389

#define FIND_DN "dc=my-domain,dc=com"





int main( int argc, char **argv )

{

          LDAP *ld;

        LDAPMessage *result, *e;

        BerElement *ber;

        char *a;

        char **vals;

        int i, rc;



/* Get a handle to an LDAP Connection */



if( (ld = ldap_init(HOSTNAME,PORT_NUMBER)) == NULL)

        {

        perror( "ldap_init");

        return (1);

        }





/* Bind anonymously to the LDAP Server */



rc = ldap_simple_bind_s (ld,NULL,NULL);



if (rc != LDAP_SUCCESS)

{

fprintf(stderr,"ldap_simple_bind_s: %s\n", ldaperr2string(rc));

return( 1);

}

else

{

printf("Connection Successful");

}



return ( 0 );

}