Abstract: This disclosure relates to a system and method, residing in a data processing system, for binding together precompiled subroutines to form a complete host procedure object code. Each of the subroutines and the host procedure is provided with a segment dictionary or list of subroutines required by that routine. The system and method are recursive in that the system makes a pass through the segment dictionary for that host procedure to locate descriptors for external or missing subroutines and, when such a missing subroutine descriptor is found, the system and method are recalled or re-entered to search the segment dictionary for that subroutine to locate a next level of subroutines called for by the current subroutine and so on. After a pass through any particular segment dictionary, the system makes a second pass there through to make any required changes in the object code thus called for and that object code is then passed to the new code file being created for the host procedure.