http://bugs.winehq.org/show_bug.cgi?id=10563
--- Comment #4 from Stefan Dösinger stefandoesinger@gmx.at 2007-11-24 14:36:22 --- At some point wine compiled I think, and was able to run 64 bit winelib apps. I don't know if it compiled to completion, or some DLLs were left out. The showstopper on win64 support is the lack of support for the win64 calling convention by gcc I think.