Build yentend 1.2.1 and GUI on Ubuntu 16.04.03
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sudo apt-get install build-essential
sudo apt-get install libtool autotools-dev autoconf
sudo apt-get install libssl-dev
sudo apt-get install libboost-all-dev
sudo apt-get install pkg-config
sudo add-apt-repository ppa:bitcoin/bitcoin
sudo apt-get update
sudo apt-get install libdb4.8-dev
sudo apt-get install libdb4.8++-dev
sudo apt-get install qt4-dev <<<<<<<<<<<<<<<<<<<<<<<<<< Add this
sudo apt-get install protobuf-compiler <<<<<<<<<<<<<<<<<<<< Add this
sudo apt-get install libprotobuf-dev <<<<<<<<<<<<<<<<<<<<<< Add this
sudo apt-get install protobuf-c-compiler <<<<<<<<<<<<<<<<<<<
cd yenten
./autogen.sh
./configure --with-gui
make
But this was on an intel/x86 machine?