How to call an RPG program?

This is a multi-part message in MIME format.
--
[ Picked text/plain from multipart/alternative ]
Such a strange thing!
I know how to call an RPG program:

#pragma map(action, "KAPBASELIB/H38ARR")
#pragma linkage(action, OS)

void action (......................) ;

int main()
{
.......

action(......) ;

........
return(0) ;
}

But this method assumes, that I know exactly, where this H38ARR reside.
And if I do not?
And I assume, that it's library is in *LIBL.

I tried
#pragma map(action, "*LIBL/H38ARR")
and got MCH3401 (?) - cannot resolve to object.

And now I do not understand, if this form is not allowed, or the customer, in 
whose context the program runs (QUSER, job QZRCSRVS) does not have a proper 
LIBL created.

How can I solve this stupid little problem?

Regards,
Jevgeni.

--