sudo apt-get install -y gpg-agent wge
wget -qO - https://repositories.intel.com/graphics/intel-graphics.key | sudo apt-key add -
sudo apt-add-repository 'deb [arch=amd64] https://repositories.intel.com/graphics/ubuntu bionic main'


for installing apt-add-repository :
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys F42ED6FBAB17C654
sudo apt-get update
sudo apt-get install software-properties-common


sudo apt-get update
sudo apt install ocl-icd-* opencl-headers intel-level-zero-gpu level-zero intel-opencl intel-igc-opencl-devel level-zero-devel

CodeBlocks build
cmake .. -G"CodeBlocks - Unix Makefiles"