Re: [Dev-C++] problem using dll: is c++ error??!?

[Per W. <pw...@ia...>]

One reason why gcc has changed is name-mangling is that gcc have also
changed it's internal representation of objects and virtual method tables.

It is - of course - only possible to link c++ code from two different
compilers if calling conventions and memory layout of objects etc are
identical betwen the two compilers. Any little difference would just
result in a failing program. Sometimes just generating the wrong answer
but most probably exploding because of a pointer error or similar.

So the real problem isn't name mangling - which would be possible to solve
by C stub functions or some playing around with compiler switches - but
that the compilers must use a common ABI.

See
http://gcc.gnu.org/gcc-3.2/c++-abi.html
for some more information.

/Per W

On Thu, 22 Apr 2004, OROSZI Bal=E1zs wrote:

> Axel Bock wrote:
> > BUT - du you have a solution? can you switch the name mangling from vc+=
+
> > to the dev-c++ model? is it *somehow* possible that this will ever work=
?
> >  can you convert the dll/lib/whatever, can you tell dev-c++ how to do i=
t?
>
> No, sadly that will never be possible in the foreseeable future.
>
> To complicate things even more, GCC itself changes it's own name
> mangling-scheme from time-to-time. That means for example, C++ libraries
> (not just DLLs, but static ones also) that are compiled with GCC 3.2.3
> cannot be used with GCC 3.3.3, because of the name mangling changed
> between these versions too.
> I just added this as a side note, because it caused quite a lot of
> headache for me until I figured this out... :)
>
> --
> Greetings,
>    Bal=E1zs
>
>
> ----