Rational Developer for System z
PL/I for Windows, Version 7.6, Programming Guide

Activating the compiler user exit

In order to activate the compiler user exit, you must specify the EXIT compile-time option. For more information on the EXIT option, see EXIT.

The EXIT compile-time option allows you to specify a user-option-string which specifies the message control file. If you do not specify a string, IBMUEXIT.INF is used (see Modifying IBMUEXIT.INF) but you have to tell the computer where to find it. The default behavior, provided you do not change the IBMUEXIT.PLI sample program, is that the compiler looks for IBMUEXIT.INF in the current directory first and then in the directories specified in DPATH.

The user-option-string is passed to the user exit functions in the global control block which is discussed in Structure of global control blocks. Please refer to the field "Uex_UIB_User_char_str" in the section Structure of global control blocks for additional information.


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