Hi,
thanks for your answer. Finally yesterday i did the following:
apt-get install linux-generic-lts-utopic
reboot
uname -a
Linux myhost 3.16.0-77-generic #99~14.04.1-Ubuntu SMP Tue Jun 28 19:17:10 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
After this the compilation was successful.
I didn't try yet to update initramfs.