hmm, well I had a look at getting this to x-compile on my system (briefly) and noted that the x-tools sysroot and a few other bits would need looking at before I could go for a complete build with the makefile as-is.
still not to much hardship I don't think, for my setup
You say you have no toolchain. Might be no harm in liaising with Hawhill about what flavour exactly of TC he is using and go down that road. At least the makefiles will work OOTB
Just a thought.