Problems building for Rpi2 on Debian 7

[Paolo Scaffardi]

I downloaded last nard sources and tried compiling it for my RaspBerry PI2
using ''make raspi_b_rev2" command. Everything stopped several minutes
later with this error:

make[1]: *** No rule to make target
`/home/paolo/Projects/giano/grc/nard/apps/linux-kernel/linux-kernel/usr/gen_init_cpio',
needed by
`/home/paolo/Projects/giano/grc/nard/intermediate/boot/initramfs.cpio.gz'.
Stop.

I have no idea why such file is not build. Could you help?