How to package cross compilers?

[Christer Solskogen via Gcc-help <gcc-help@xxxxxxxxxxx>]

Hi!

I'm about to rewrite a package for a aarch64 cross compiler for Arch 
Linux, and I'm wondering how it should be packaged. What they've done 
earlier is to have sysroot set to /usr/${TARGET}, but that way they mix 
stuff from binutils who also installs stuff into that directory. So they 
mix files for the host system into a directory that should be reserved 
for the target system.

What do you think of using /usr/sysroot/${TARGET} for sysroots instead? 
Does that seem like a sound idea?