undefined reference to 'input' && undefined reference to 'pjsua_invite'

[rachelbaskaran@xxxxxxxxx (Rachel Baskaran)]

When I run this below script it shows the above error on the subject line:

static void ui_console_main(void)
{
char buf[128];
pjsip_inv_session *inv;

//ui_help();

for(;;)
{

ui_help();
fgets(buf, sizeof(buf), stdin);

switch (buf[0]) {

case 'm':
if(inv_session != NULL) {
puts("Can not make call while another one is in progress");
fflush(stdout);
continue;
}

#if 1

   /* Make call!: */
if(!input("Enter URL to call", buf, sizeof(buf)))
continue;
pjsua_invite(buf, &inv);

#else

pjsua_invite("sip:localhost:5061", &inv);


#endif

    break;

How do I solve this?

Any help!

Thanks!
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