using 3rd party library (libconfig) with Qt (C++)

I'm having trouble getting a third party library (libconfig++) to work in Qt.

When compiling in Qt, I get error messages such as:

undefined reference to `_imp___ZN9libconfig6ConfigC1Ev'
undefined reference to `_imp___ZN9libconfig6Config8readFileEPKc'
undefined reference to `_imp___ZNK9libconfig6Config5writeEP6_iobuf'

etc.

In my .pro file, I have:

LIBS += -L$$PWD/libconfig/lib -lconfig++

And I've added libconfig++.dll and libconfig++.lib to the correct folder.

This project uses another 3rd party library (in a similar way) successfully so I don't think it's a syntax or include problem.

It seems like it might be a C++ name mangling issue? How can I confirm this?

Right now, I build the library in VS 2008 (I've tried building it b开发者_开发技巧oth as a dynamic and static library, neither work). I think I've been able to do this in the past with other libraries. Is there some flag in VS that I'm not setting correctly?

Thanks

---

If your library is called "libconfig++.lib" you might have to change

LIBS += -L$$PWD/libconfig/lib -lconfig++ 

to

LIBS += -L$$PWD/libconfig/lib -llibconfig++