then this could be a idea for others too:
makefile.in
# we're now targeting all major compute architectures within one binary.
.cu.o:
$(NVCC) @CFLAGS@ -I . -Xptxas "-abi=no -v"
(however, the binaries I released are only compute_35 compute_50, forgot to add compute_30)
Also the makefile is only for linux, (I guess people compiling on linux can select the compute version they need and remove the others...)
Regarding the window of opportunity for ppl... well that was last week
However the coin has never been profitable at all (no matter which %age of hashrate you got )