Re: Do I Really Need A Supervisor?

[dbrown@vigra.com (David Brown)]

bobduff@world.std.com (Robert A Duff) writes:

> I meant exactly what I wrote: An Ada 95 program does not need a main
> procedure (or main function, for that matter).  That is, an Ada 95
> program can consist of a bunch of library packages, without any main
> subprogram.  This is different from Ada 83, which required a main
> subprogram (called a main program in Ada 83, despite the fact that it's
> not a program).
> 
> Note "optionally" and "if specified" in 10.2(7) -- the user is not
> required to have a main subprogram.  Note "if the partition has one" in
> 10.2(21) and "if there is no main subprogram" in 10.2(23).  See also
> 10.2(34), which explains the reason.  See also AARM-10.2(34.e), which
> says that this change is a language extension.

I guess then a GNAT question is in order.  How would you go about
producing a partition with GNAT that doesn't have a main subprogram.
If I just give gnatbind packages without a main subprogram, it
complains that there is no main subprogram.  If I specify -n to
indicate that there is no main subprogram, then it doesn't generate a
function called main.  I could use it this way, but I would have to
write my own main that just called adainit.

I guess I'm wondering how 10.2(23) get's addressed.  I suppose that
requiring the user to write a C routine to call adainit could be
called "implementation defined" :-).

Dave Brown