we have protoized kernel code now
Do not use $< in any cross-platform dir as it requires a reasonable
make that is not available on all systems.
-Be careful with prototypes/ANSI-C in code that will be compiled for
-kernel source. In general, avoid them until we have figured out
-exactly when/where they can be used safely.
-
Do not have build rules that build multiple targets. Make doesn't seem able
to handle this, and it interferes with -j builds. (In particular, build the
rxgen targets individually and not using the flags for building all the files