C and C/++

If you want CICS to load your C and C++ programs into the ERDSA, compile and link-edit them with the RENT compiler option.

The CICS-supplied procedures DFHYITDL or DFHYITFL (for C) and DFHYITEL or DFHYITGL (for C++) have a LNKPARM parameter that specifies a number of link-edit options. To link edit an ERDSA-eligible program, override this parameter from the calling job, and add RENT to the other options you require. You do not need to add the RMODE(ANY ) option, because the CICS EXEC interface module for C (DFHELII) is link-edited with AMODE(31) and RMODE(ANY). Therefore, your program is link-edited as AMODE(31) and RMODE(ANY) automatically when you include the CICS EXEC interface stub, see The CICS-supplied interface modules.

The following sample job statements show the LNKPARM parameter with the RENT option added:

//CPROG JOB 1,user_name,MSGCLASS=A,CLASS=A,NOTIFY=userid
//YITDL EXEC DFHYITDL,
	.
	(other parameters as necessary)
	.
// LNKPARM='LIST,MAP,LET,XREF,RENT'

If you want to compile C or C++ code that contains sequence numbers, for example the C or C++ sample programs distributed with CICS, then you must override the CPARM parameter to specify SEQ. For example:

//EXAMPLE EXEC DFHYITEL,
// CPARM='/CXX OPT(1) SEQ NOMAR SOURCE'
//TRN.SYSIN DD *
... source code goes here ...
/*
//LKED.SYSIN DD *
NAME EXAMPLE(R)
/*