MIGR compiler option

You can use the OS/VS COBOL MIGR compiler option when you are planning to convert an OS/VS COBOL program to Enterprise COBOL. This option helps you understand the magnitude of the conversion effort.

MIGR can also ease any planned future conversion by helping you avoid using OS/VS COBOL source language not supported by Enterprise COBOL. By compiling your programs using MIGR, you can determine ahead of time which language elements must be converted.

There are incompatibilities in the following areas:
  • New reserved words that are introduced because of COBOL functions that have been added (previously valid user words might now be illegal)
  • Language function that is supported in a different manner
  • Language function that is not supported

You can set the MIGR compiler option either as an installation default, or when compiling an OS/VS COBOL program. When you set MIGR on, the compiler flags most statements that are changed in or not supported by Enterprise COBOL.