Rational Developer for System z
Enterprise COBOL for z/OS, Version 4.1, Compiler and Runtime Migration Guide


Specifying Language Environment runtime options

Language Environment provides various methods for specifying runtime options. Three mechanisms are available to specify options:

To determine which of the Language Environment methods you can use for existing applications, you need to know whether the main program is compiled with RES or NORES and if the main program has been link-edited with Language Environment. Table 1 lists the specification methods available to specify and override runtime options under Language Environment.

Table 1. Methods available for specifying runtime options for OS/VS COBOL programs
Main program CEEDOPT and CEEROPT CEEUOPT Invocation Default assembler user exit
Not link-edited with Language Environment:        
OS/VS COBOL RES X   X X
OS/VS COBOL NORES     X  
Link-edited with Language Environment:        
OS/VS COBOL RES X   X X
OS/VS COBOL NORES     X  
OS/VS COBOL  NORES linked1 X   X X
Note: In this case, the NORES programs exhibit RES behavior after link-edit. For more information about the impact of link-editing with Language Environment, see Link-editing applications with Language Environment.

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