Re: combine Ada with MS VS C++

["Randy Brukardt" <randy@rrsoftware.com>]

"Ludovic Brenta" <ludovic.brenta@insalien.org> wrote in message
news:87hdjb5kqd.fsf@insalien.org...
> writes:
...
> I don't program on Windows, so I can't help you with the exporting
> from Ada.  You may need to use all three arguments to pragma Export in
> order to get the link name right; this is the platform-dependent part.
> So you'd say something like:
>
> procedure Check_Buffer (vr, vl : in out Interfaces.C.double);
> pragma Export (Convention => C, Entity => Check_Buffer,
>                External_Name => "CheckBuffer", -- this is...
>                Link_Name => "something");      -- ...the hard part

I'd leave out the link name part. The intent is that you specify *either*
the link name *or* the external name. The external name is the name as it
appears in C. I think all Windows Ada compilers can generate the link name
from that name; certainly we only used the External_Name in Claw to link to
Win32.

This only works if you turn off name-mangling as suggested in the previous
response. You could use the link name instead to manually provide the
mangled name, but that seems like a lot of work for little gain.

                  Randy.