Error compiling c program

Issue

doing make (on c program get following warning:

auditlog.c:35: warning: incompatible implicit declaration of built-in function bstrcpyb

#include </opt/informix/incl/tools/fglsys.h>
#include <stdio.h>
#include <time.h>
#include <stdlib.h>

Line 35 
strcpy ( sysdate, ctime ( &seconds ) );