Multi-architecture binaries

[Lutger]

I've seen some games with multiple executables compiled for different 
architectures. Since the executable size is dwarfed by resources, this 
is no problem for these kind of applications.

How much of a negative impact would your suggested approach have on 
compiler optimizations? (inlining and that sort of thing)

Another thing, what are the benefits of the compiler doing this over 
libraries?

On a related note it may be worth mentioning liboil which implements 
exactly this in a library: http://liboil.freedesktop.org/wiki/