From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,9b1d37f5a56928f1
X-Google-Attributes: gid103376,public
X-Google-ArrivalTime: 2002-04-16 07:14:50 PST
Path: 
 archiver1.google.com!news1.google.com!newsfeed.stanford.edu!canoe.uoregon.edu!hammer.uoregon.edu!skates!not-for-mail
From: Stephen Leake <stephen.a.leake.1@gsfc.nasa.gov>
Newsgroups: comp.lang.ada
Subject: Re: Calling Ada from C++ (MS Visual C++)
Date: 16 Apr 2002 10:07:43 -0400
Organization: NASA Goddard Space Flight Center (skates.gsfc.nasa.gov)
Message-ID: <ulmbn4tzk.fsf@gsfc.nasa.gov>
References: <3ab585c8.0204050030.3d94e692@posting.google.com>
 <u1yduhuw5.fsf@gsfc.nasa.gov>
 <3ab585c8.0204110051.3659218c@posting.google.com>
 <uadsap362.fsf@gsfc.nasa.gov> <hNUu8.275$WO2.10198@news.siol.net>
NNTP-Posting-Host: anarres.gsfc.nasa.gov
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Trace: skates.gsfc.nasa.gov 1018966439 13829 128.183.220.71 (16 Apr 2002
 14:13:59 GMT)
X-Complaints-To: usenet@news.gsfc.nasa.gov
NNTP-Posting-Date: 16 Apr 2002 14:13:59 GMT
User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2
Xref: archiver1.google.com comp.lang.ada:22600
Date: 2002-04-16T14:13:59+00:00
List-Id: <comp.lang.ada>

"Karel Miklav" <karel@inetis.removeme.com> writes:

> > Just out of curiosity, why are you using MS C++ instead of Gnu C++?
> > I'll assume it's to get MFC.
> 
> I'm considering options to escape from MS world (VC++/VB/scripting/COM/),
> mostly get rid of VC. Is it possible to use Gnu C++ on Windows box as an
> industry-strenght compiler with possibilities to interface to other
> languages like Ada and Eiffel without too much hassle (hassle = 90% of time
> spent on interfacing)?

Interfacing Gnu Ada and Gnu C++ is easier than interfacing Gnu Ada and
non-Gnu C++. Neither is standard; the simplest way is to use C as the
intermediate language. But Gnu Ada does support directly
importing/exporting Gnu C++ classes. 

I'm not clear on Eiffel; if it supports exporting functions to Gnu C,
then interfacing it with Gnu Ada will be simple.

"industry-strength" is a very ambiguous term. If you mean "supported
by a strong company with a good rep", then Gnu Ada is
industry-strength. If you mean "comes with lots of widgets that do 90%
of my business GUI app", then no, Gnu Ada is not.

The amount of "hassle" involved in interfacing depends heavily on what
libraries you are interfacing to. 

-- 
-- Stephe