How can I get the kernel source for "Linux nanopiair 3.4.112-sun8i #10 SMP PREEMPT Sun Oct 23 16:06:55 CEST 2016 armv7l armv7l armv7l GNU/Linux" ? thanks a lot.
build@nanopiair:~/kernel $ apt-get source linux-image-sun8i
Reading package lists... Done
E: You must put some 'source' URIs in your sources.list