The errors you have posted are the result of other errors. i.e., we can see that there was an error in nv.c which prevented nv.o from being built, which caused an "error 1" in make. But without seeing exactly what those errors were, there is no way to find out how to fix them, I'm sure that makes sense.
The problem is very likely that you don't have kernel-source installed or have it installed but not configured. But there's really no way to know for sure without the full error output of make.