Re: Calling RPGILE program from C++

Hi Jevgeni,

	Since you are calling a program object you want to use 'extern "OS"'
instead of 'extern "RPG"'.  It doesn't matter what language a program
object is written in, the calling convention for a program call is always
'extern "OS"'.  'extern "RPG"' is for calling a service program entry point
or an export from a module that is bound into your program.

					Thanks,

Aaron Albertson
CUBE-3 WCode/NMI translator development,
OX Translator Development, and MI Architecture owner
Dept. 47W 030-2/E102,  IBM   Rochester, MN 55901
albertaa-r/[email protected]
(507) 253-5173, T/L 8-553-5173




From:	Jevgeni Astanovski <[email protected]>
To:	"Bare Metal Programming IBM i (AS/400 and iSeries)"
            <c400-l-Zwy7GipZuJhWk0Htik3J/[email protected]>
Date:	12/19/2014 06:59 AM
Subject:	[C400-L] Calling RPGILE program from C++
Sent by:	"C400-L" <c400-l-bounces-Zwy7GipZuJhWk0Htik3J/[email protected]>



Hi, folks.
There was a similar discussion recently, but for C.
I know how to call an RPG program from my C program.
I write
....
#pragma map(RetrSC, "RSC10R")
#pragma linkage(RetrSC, OS)
void RetrSC (char *, char *, scpf *, char *) ;

main()
{
...
RetrSC(Key, "CHAIN", &Account, &Ind).

}

works fine.

Decided to experiment with C++
Manual says that #pragma linkage is not supported.
In an example I found that it should look like this:

#pragma map(RetrSC, "RSC10R")
extern "RPG" void RetrSC (char *, char *, scpf *, char *) ;

main()
{
...
RetrSC(Key, "CHAIN", &Account, &Ind).

}

RSC10R is not a service program, just a *PGM object.
Create module works fine, however CRTPGM generates CPD5D02:
No definition was found for reference RSC10R in *MODULE

What should I do to be able to call an RPG program from C++ the same
way I do it from C?

I believe that it should be pretty simple, but I've already spent 3
hours searching in the manuals and googling....

TIA,

Jevgeni.
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