This really 2 features: 1. ADT installer - Currently you have to download an SDK toolchain, a qemu kernel and a qemu rootfs, then merge these things all together. Instead we should separate these out into the following blocks: * SDK core (inc. installer), * 32 bit native tools, * 32 bit compiler [for each arch], * 64 bit native tools, * 64 bit compiler [for each arch], * Target kernel+rootfs [for each arch], * Optional extra lib 'packs' [for each arch]. 2. Customize sysroot setup - The target roofs would be used both by qemu *and* as the SDK sysroot at a user appointed location. The installer would be a script that will setup host toolchain and native tools under /opt/poky, and target sysroot under user specified location