Tutorial: Installation of Lazarus to Raspberry Pi 3 + 4 written by Linkat Version: 16.08.2019 Using 2019-07-10-raspbian-buster 1. Download: fpc-3.0.4.arm-linux-eabihf-raspberry.tar fpc-3.0.4.source.zip lazarus-2.0.4.zip (oder the newer releases) 2. Install the libs: sudo apt-get install libgtk2.0-dev libghc-x11-dev -y 3. Unpack fpc-3.0.4.arm-linux-eabihf-raspberry.tar, fpc-3.0.4.source.zip and lazarus-2.0.4.zip. (PCmanFM "Extract Here") 4. Move the extracted folders as root: sudo mv fpc-3.0.4.arm-linux/ /usr/local sudo mv fpc-3.0.4/ /usr/share sudo mv lazarus/ /usr/lib 5. Installation of fpc Start the terminal and cd /usr/local/fpc-3.0.4.arm-linux "sudo ./install.sh" Answer the questions: Install prefix -> /usr the next 4 questions by "Yes" Now the Free-Pascal-Compiler should be installed. 6. Now cd /usr/lib/lazarus with "sudo make clean bigide" you can build the Lazarus-IDE. (this needs abt. 10 min) then you can start with "./startlazarus"