Upgrading applications that use an assembler driver

There are three methods for upgrading applications that use an assembler driver to call COBOL subroutines:

Convert the assembler driver to a Language Environment®-conforming assembler driver.
Modify the assembler driver to set up the Language Environment.
Use the RTEREUS runtime option if the assembler driver cannot be modified.

These methods are described in the sections below. In all cases, you upgrade the COBOL subroutines in the same way as described in the other COBOL conversion scenarios.