probably very dumb toolchain question

[Paul Brook]

> > Is there any reason one woul need to compile the linux kernel with the
> > same toolchain as the userspace binaries?
>
> no, none at all ... in fact you could take a toolchain that is just
> binutils and gcc (no libc at all) and use that

Not entirely true. On some targets[1] it's not possible to use a bare-metal 
elf toolchains to compile a linux kernels.

Paul

[1] I forget which target I encountered this on, probably mips or sparc.