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From: dewar@merv.cs.nyu.edu (Robert Dewar)
Subject: Re: Can Ada95 interface with C++?
Date: 1997/02/24
Message-ID: <dewar.856787034@merv>#1/1
X-Deja-AN: 221056623
References: <5csvbd$ia2@top.mitre.org> <32F60684.59E2@gslink.net>
 <32F94DD7.3F54BC7E@worldnet.att.net> <1997Feb6.150722.14570@ocsystems.com>
 <1997Feb6.130819.1@eisner> <dewar.855276105@merv>
 <tx1bu9rp8sr.fsf@cygnus.com> <1997Feb11.153355.1@eisner>
 <1997Feb12.004642.31821@ocsystems.com>
Organization: New York University
Newsgroups: comp.lang.ada
Date: 1997-02-24T00:00:00+00:00
List-Id: <comp.lang.ada>


Joel says

<<Currently as I understand it almost no Ada compilers can interface to
"real" C++ methods/types/etc. except for GNAT interfacing to GNU C++.
Plans are in the works for more of the GNAT style interfaces for other
compilers (like ours, though don't hold your breath).>>


No, this is wrong, there is nothing GNU C++ specific about the GNAT
C++ interface, and indeed the most extensive use of this interface is
in conjunction with the SGI Delta C++ compiler, which is not compatible
with G++.

In GNAT, a single runtime unit defines the layout of tagged types and
the dispatching interface, and to interface to a new C++ compiler, only
this one runtime unit must be modified (zero changes are required to the
compiler itself, it is not even necessary to recompile the compiler).