[Boost-users] How well does Boost support cross-compilation?

I'm dreaming of compiling MinGW, OS X (Intel and PowerPC) and Linux x86 versions of my program in one go, perhaps on Linux. The program uses little other than several Boost libraries. Is this a possible and reliable usage scenario? This doesn't seem like a particularly original idea, so I'm sure others explored it. Are there any how-to's? I couldn't find any.