Migrating ILC applications

You need to relink pre-Language Environment-conforming ILC applications in order to get Language Environment's ILC support.

If you link your VS COBOL II to OS PL/I ILC applications to the migration tool provided by OS PL/I Version 2 Release 3, you do not need to relink your applications to the Language Environment library routines. This migration tool also supports multitasking applications that contain COBOL. For more information about this migration tool, refer to the IBM Enterprise PL/I for z/OS library. The PTF numbers for the PL/I migration tool are:

On MVS™, UN76954 and UN76955

You don't need to recompile an existing ILC application unless the COBOL programs were compiled with OS/VS COBOL or the PL/I routines were compiled with OS PL/I Version 1 Release 1 or 2. In these cases, you must upgrade the source and compile with a newer version of the compilers.