fvp‐base u‐boot build from sdk - MarekBykowski/readme GitHub Wiki

First of all you have to meet host requrements for the tools installed. I'm listing only those I didn't have, so for pristine there will be more.

sudo apt-get -y update 
sudo apt-get -y install u-boot-tools libssl-dev 
# fatal error: gnutls/gnutls.h: No such file or director
sudo apt-get -y install libgnutls28-dev