[Mingw-users] Using mscv dlls containig c++ classes in mingw

[Mathias T. <mt...@fs...>]

Hy!

I am trying to use a dll (respecively its .lib) that I have compiled
natively with msvc++ under linux and mingw. I read quite a lot of tips on
the web, plus the coresponding mingw FAQ entry (
http://www.mingw.org/mingwfaq.shtml#faq-msvcdll ), but to no avail.

No matter if I try to compile a program with the -lib file from msvc
directly (/usr/local/mingw/i386-mingw32msvc/bin/g++  sigg_scanslots.cpp
acertsc.lib) or if I am first creating a .a file from the lib with reimp
and dlltool (/usr/local/mingw/i386-mingw32msvc/bin/g++  sigg_scanslots.cpp
-L. -lacertsc), I always get undefined references for every single
function I use, expect for pure C function defined in the header as 
'extern "C" ', but not for anything using c++.

I tried to define the functions in the header with _declspec(dllimport)
and without it, the only difference it made, was the the "undefined
reference" messages where pretty (pcsc::Connect(unsigned int)) or not
(__imp___ZN4pcsc7ConnectEj).

I am quite desperate, I hope that some of you can help.

cheers
Mathias