OPS/REXX supports an extension to the REXX CALL instruction.
CALL (name) [expression][,[expression]]...
The name is evaluated to determine the actual name of the called routine. The name cannot be an expression or a compound symbol itself. However, it can be a simple REXX symbol that contains the name of the routine to be called.
Because OPS/REXX resolves all external REXX subroutines at compile time, the name of any external subroutine must appear on a CALL instruction or a function call elsewhere in the program. If not, this message is issued during the compile phase:
REXX error 43: Routine not found
You may use this technique:
ExtRtn = 'EXTSUB3' /* For example */ CALL (ExtRtn) /* Other REXX code */ exit /* The following code will never be executed but is used to define the external subroutines used in the dynamic CALL above */ CALL EXTSUB1 CALL EXTSUB2 CALL EXTSUB3 CALL EXTSUB4
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