gamedevlists-windows

[GD-Windows] C++ decorated names

[<cas...@ya...>]

Hi,
I'm building a few dlls with both msvc and mingw. Both work fine, but the
name of the dll exports of the C++ methods is different, so I cannot mix the
dlls. Does somebody knows if it's possible to change the name generation
scheme on msvc or mingw, to match the other?

Thanks in advance,

Ignacio Castaño
cas...@ya...

RE: [GD-Windows] C++ decorated names

[Jon W. <hp...@mi...>]

I wouldn't assume that exception tables, RTTI, vtable layout,=20
or even calling conventions would be the same between different=20
C++ compilers. Basically, C++ in shared libraries is a really=20
scary concept, because the standard didn't at all anticipate=20
(or want to deal with) those issues.

Cheers,

				/ h+



> -----Original Message-----
> From: gam...@li...
> [mailto:gam...@li...]On Behalf Of
> Ignacio Casta=F1o
> Sent: Monday, June 16, 2003 12:29 PM
> To: gam...@li...
> Subject: [GD-Windows] C++ decorated names
>=20
>=20
> Hi,
> I'm building a few dlls with both msvc and mingw. Both work fine, but =
the
> name of the dll exports of the C++ methods is different, so I=20
> cannot mix the
> dlls. Does somebody knows if it's possible to change the name =
generation
> scheme on msvc or mingw, to match the other?
>=20
> Thanks in advance,
>=20
> Ignacio Casta=F1o
> cas...@ya...
>=20
>=20
>=20
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>=20

Re: [GD-Windows] C++ decorated names

[<cas...@ya...>]

Jon Watte wrote:
> I wouldn't assume that exception tables, RTTI, vtable layout,
> or even calling conventions would be the same between different
> C++ compilers. Basically, C++ in shared libraries is a really
> scary concept, because the standard didn't at all anticipate
> (or want to deal with) those issues.

That's scary, but after some little googling I've found some nice pieces of
info.

http://www.bcbdev.com/articles/vcdll.htm
http://mywebpage.netscape.com/yongweiwu/stdcall.htm

It seems that mingw has an option to support msvc vtable layout, so that you
can use COM objects. So, as long as you only export pure interfaces, you
should be safe.

However, I'm not on using pure interfaces only. I also use interface
inheritance and virtual destructors... I don't know how those affect the
layout of the vtables and if they will still be compatible. Does somebody
know what can and can't be done?


Ignacio Castaño
cas...@ya...