[Boost-users] Building for cygwin on Windows?

I can't get the boost libraries to build correctly using Cygwin and GCC on Windows XP. Boost seems determined to build for some kind of native Windows environment. I'm trying: bjam "-sTOOLS=gcc" "--prefix=/usr/local" and it complains "wide i/o not supported on this platform". If I omit --prefix it puts the libraries in the Windows file system under C:\Boost, but even if I copy them to somewhere under cygwin and point GCC at them, it still doesn't find them. SUrely I'm not the first person to want to do this? What is the magic formula? Thanks...