Re: Accessing C++

Re: Accessing C++

[Robert Dewar]

Mixing Ada and C++ is not trivial, and certainly you should not expect
it to work without interacting with the Ada vendor to determine how it
should be done. Both Ada and C++ need to own the world (to deal with
initialization and finalization), and this may well cause difficulties.
In general I would expect it to be difficult unless the Ada vendor has
specifically taken steps to make it work (or the C++ vendor :-)

I assume you are wrapping the C++ stuff in C, since obviously it won't work
to call it directly unless the Ada compiler knows a lot about the C++ 
compiler including its name crunching algorithm.

GNAT interfaces quite smoothly with C++, but this did not happen accidentally,
it took quite a bit of design, technical work, and fiddling!

Accessing C++

[Ulrika Bornetun]

No, this is not a flame bait or a this vs. that question!

I am trying access a Motif front-end program written in C++ from
my Ada main program, and I am getting into all sorts of problems.
I have successfully compiled and linked the stuff, but when I run it,
I get strange crashes deep within the C++ libraries. A similar program
that accesses the C++ front-end from C works without problems.

I am using all sorts of different libraries, linking with
multi-threading etc. on Solaris, using the Verdix compiler.

Has anybody done anything similar? Do you have any hints for me?

Is there anything inherent to the Ada/C++ mix that would make this
impossible? 


ulrika


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------  Ulrika Bornetun            bre@ubszh.net.ch                   ------
------  Union Bank of Switzerland, Postfach, 8021 Zurich, Switzerland ------
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------        then all will be productive."                           ------
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