#6 Must build rene before pc will build

[Sam Madden]

You can't do a "make pc" unless you have first done a
"make rene".

This is because the makefile searches for platform
specific files by selecting the files prefixed by
platform/rene/ from Makefile.objs. If you 'make pc'
first, your Makefile.objs will list a bunch of
platform/pc/ files, which the Makefile pattern matcher
will ignore, meaning that your build won't include any
platform files and all sorts of ugly link errors will
occur.

This is relatively low priority, since most people will
should have atmel tools and be able to build for rene.
It is potentially nice to be able to build simulator
binaries, however, without having a full blown atmel
environment...