In a recent post Using Docker Containers for Yocto Builds, I suffered an episode of NIHS (not-invented-here syndrome). I wrote a Dockerfile for Yocto builds. Stefan Agner pointed out in his comment that the CROPS project provides ready-made containers for Linux distributions like Ubuntu, Fedora and others. The crops/poky-container enables us to start our first...
Category: Embedded Linux
Using Docker Containers for Yocto Builds
We want to build a custom Linux image with Yocto for the Raspberry Pi 3 model B (BCM2837). The Linux image contains a very simple Internet radio application using Qt 5.11 and the eglfs graphics backend. Our colleagues shall be able to repeat the build easily – now, in three years and even in ten...
Linux Foundation Launches Automated Compliance Tooling (ACT) Project
LinuxGizmos reports that the Linux Foundation has launched a project Automated Compliance Tooling (ACT). ACT is an umbrella project for FOSS compliance tools like Fossology, Quartermaster and SPDX. Fossology is a copyright and license scanner that works on the source code (see my recent post Seminar “Open-Source Management in Software Supply Chains” for a very...
Seminar “Open-Source Management in Software Supply Chains”
On 20 November 2018, the law firm Bird & Bird hosted a seminar about “Open-Source Management in Software Supply Chains – Effective and Consistent License Compliance” in their Frankfurt office. The seminar was organised by Miriam Ballhausen, who is Bird & Bird’s specialist in open-source Licensing. The seminar offered the opportunity to meet two of...
Building Yocto Packages Manually with devshell
We must figure out why a Yocto package doesn’t work as expected. So, we must tweak the source code a bit here and there, cross-build the package for our ARM-based embedded Linux system and install some shared libraries from the package on the embedded Linux system. Of course, we want short turnaround times to try...
Monitoring Sys Files with QFileSystemWatcher
When the driver turns off the ignition in a vehicle, display computers like terminals in harvesters or infotainment systems in cars should be notified. The display computers should save important data and shut down orderly. When the display computer runs on Linux, it learns the status of the ignition by monitoring the GPIO for clamp...
CAN Standard Helps Attackers to Switch Off Brakes, Steering and Engine
Security researchers from TrendMicro and the Technical University of Milano explain in a blog post “The Crisis of Connected Cars: When Vulnerabilities Affect the CAN Standard” and a video how to switch off any electronic control unit (ECU) attached to the CAN bus. An attacker could switch off the brakes, engine or steering of your...
CMake Cross-Compilation Based on Yocto SDK
We have succeeded in building embedded Linux with Yocto for a quad-core NXP i.MX6 (ARM Cortex-A9). Next, we want to cross-compile our own Qt application. As we use CMake for building our Qt application, we must create a CMake toolchain file. I am going to give a line-line by line explanation of the CMake toolchain...