gcc and msvc++ have different opinions on the size of a long in 64bit code, gcc has sizeof(long)==8 while msvc++ has sizeof(long)==4
Binary compatibility with win64 will be just about impossible as the long datatype is used extensively throughout the headers and code doing -Dlong=int works in simple cases, but not as a general rule I'm at a loss as to where to go from here, suggestions are most welcome.
