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From: julian_robbins@bigfoot.com (Julian Robbins)
Newsgroups: comp.lang.ada
Subject: Re: Calling Ada from C++ (MS Visual C++)
Date: 11 Apr 2002 01:51:02 -0700
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Date: 2002-04-11T08:51:03+00:00
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Okay, so here is what I have done...

Compiled the original "mathutil.adb" into "mathutil.o". Then used
"gnatbind -n mathutil" which produced the files "b~mathutil.adb" and
".ads". I then compiled these using gcc and renamed the resulting .o
file "main.o".

Within my VC++ project I have then included the mathutil.o and main.o
files, added calls to adainit() and adafinal() and then
compiled/linked. This throws up various missing links, so I have
included the following library files:
   libgnat.a
   libgcc.a
   libmingw32.a

Does this seem correct?? It seems to compile and run, but I can't help
thinking that this process seems a bit odd.

Cheers,

Julian



Stephen Leake <stephen.a.leake.1@gsfc.nasa.gov> wrote in message news:<u1yduhuw5.fsf@gsfc.nasa.gov>...
> julian_robbins@bigfoot.com (Julian Robbins) writes:
> 
> > So, using GNAT I believe that I can include the 'adainit()' and
> > 'adafinal()' in the binding stage using 'gnatbind -n mathutil.ali'.
> > However, this seems to produce a .o file that I could then only use
> > with gnatlink to link the C++ objects and Ada objects together. This I
> > can not do - I need to use MS Visual Studio to link the final
> > executable, including any relevant Ada objects.
> 
> You can link the .o file containing adafinal() and adainit() with your
> C++ code, same as any other Ada .o.