Ubuntu embedded C++20 setup

Follow these instructions to turn an x86_64 PC into an Ubuntu workstation for embedded C++ 20 programming, using my bmptk (build scripts) and hwlib (hardware library). Currently supported targets:

• AVR8 (Arduino Uno)
• ARM/Cortex (Arduino Due, Blue Pill, Teensy 4.0, LPC1114)
• native (Ubuntu x86_64, Windows; both use SFML)

These are the GCC/G++ compilers used:

• AVR8 : https://github.com/CrustyAuklet/avr-libstdcxx/releases
• ARM/Cortex : https://github.com/xpack-dev-tools
• native gcc-10 from the Ubuntu repos

I could add other targets (like MSP430, ESP32, RISC V) when someone can point me to a GCC/G++ 10 build.

Install Ubuntu

I used the 20.04 LTS ISO from https://ubuntu.com/download/desktop. My installation might not work other versions. I created a bootable USB using rufus, according to the instructions at https://ubuntu.com/tutorials/create-a-usb-stick-on-windows. I booted the PC form the USB stick, and followed the instructions, using the default options.

Download an run the installation script

Log in, open a shell, and run these commands:

    sudo apt install -y git
    git clone https://www.github.com/wovo/ubuntu-toolchains
    source ubuntu-toolchains/install

The appropriate path additions are made to /etc/environment. Log out and log back in.

run a blinky from the shell

You can build and run an example from its directory in a shell. Connect your Arduino Uno or Arduino Due. In the shell, cd to ~/hwlib-examples/arduin-uno/blink-gpio or ~/hwlib-examples/arduin-due/blink-gpio. Run the command

    make run

to build the example, download it to your target and run it there. You should see the LED on your Arduino blink.

use with CodeLite

You can build and run an example from the CodeLite editor. In the shell, cd to the examples root for your Arduino (~/hwlib-examples/arduin-uno or ~/hwlib-examples/arduino-due). Run the command

    make codelite_workspace

This creates a __codelite.workspace file. Open this file with CodeLite. Accept the defaults. In the left pane, you see the examples as individual projects. Double-click on a project to select it. Click Build => Run to run the project. When asked, select 'Build and Execute', and select 'Remember my answer'. When asked to select a compiler, just select one, it doesn't matter which, because the makefile (not CodeLite) will determine which toolchain is used.