Name Mangling in WineLib

I'm building a WineLib dll in C++ that gets called by a Windows
app run by wine.  Is there a way to specify how exported function
and class names get mangled when compiling with winelib?  The
Windows app expects MSVC mangled names, so it can't find the
exported symbols in my dll, since the names are mangled differently.
I'd like to be able to make my dll export the MSVC style names,
instead of g++ names.

I think spec files used to provide similar functionality, but not
any more...

-Steve