Dates and Events:
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OSADL Articles:
2023-11-12 12:00
Open Source License Obligations Checklists even better now
Import the checklists to other tools, create context diffs and merged lists
2022-07-11 12:00
Call for participation in phase #4 of Open Source OPC UA open62541 support project
Letter of Intent fulfills wish list from recent survey
2022-01-13 12:00
Phase #3 of OSADL project on OPC UA PubSub over TSN successfully completed
Another important milestone on the way to interoperable Open Source real-time Ethernet has been reached
2021-02-09 12:00
Open Source OPC UA PubSub over TSN project phase #3 launched
Letter of Intent with call for participation is now available |
COOL - Compact OSADL Online Lectures - January 2025 edition
embedded world Exhibition 2025
OSADL Special Events
COOL - Compact OSADL Online Lectures
Online event
Upcoming COOL webinars - COOL registration - Selected public videos - All presentations and videos (some for members and participants only)
What is COOL?
COOL - Compact OSADL Online Lectures: Open Source meets Industry
- COOL is an OSADL webinar series.
- COOL takes place regularly once a month and covers new and state-of-the-art topics on Open Source software in industry, either on legal or on technical aspects.
- COOL editions each consist of two lectures covering a special "Open Source meets industry" topic followed by a discussion round. The first "basic" lecture provides basic knowledge with regard to the respective topic and the second "advanced" lecture dives deeper into the topic and highlights special aspects. The discussion round gives all participants the possibility to ask questions and discuss with the respective speakers and the audience.
- COOL speakers are OSADL experts on the one hand and external specialists on the other hand who kindly agreed to share their expert knowledge on the respective topic.
- COOL is a virtual event. The lectures are held by live video streams. Speakers will be available for questions and discussion in a video conference which will take part subsequent to the live video streams.
- COOL in general is designed to provide support how to best and compliantly use Open Source software in industry.
COOL December 2024 edition
Taking license compliance to the next level: Investigate component interdependency
Wednesday, December 11, 2024, 2pm to 4pm CET
Agenda COOL December 2024 edition:
2:00pm to 2:45pm CET: | Theoretical part: Demystifying the Executable and Linkable Format (ELF), Armijn Hemel MSc, Tjaldur Software Governance Solutions |
2:45pm to 3:30pm CET: | Practical part: How to use tools to analyze software component interdependency, Dr. Carsten Emde, OSADL |
3:30pm to 4:00pm CET: | Discussion and possibility to ask questions |
Description COOL December 2024 edition:
The first step in reaching license compliance of a software project obviously is to obtain licensing information of every single component. This may include not only automated scanning but sometimes some manual interaction. If at least one copyleft license applies, full license compliance may require a second more challenging step to investigate the relationships between the various components of the project. As a special exception, all components may be completely unrelated to each other in which case no additional work is required. Not unusually, however, some components are linked to each other and, if the copyleft of the license imposes additional obligations in this case, the way how they are linked must be analyzed. In case the components are binary executables or libraries, they are equipped with a standardized data structure that includes all linking information and particularly which symbols of the component are either made available to the outside world or are required by the outside world. This data structure is called Executable and Linkable Format (ELF). As the ELF dataset is quite complex, but a good knowledge of it facilitates linkage analysis, Armijn Hemel MSc from Tjaldur Software Governance Solutions will give an in-depth presentation on this topic in the theoretical part. Armijn is a recognized expert in this field, and OSADL would like to thank him very much for accepting the invitation to speak at this edition of COOL.
In the practical part of this edition of COOL, Dr. Carsten Emde from OSADL will present a tool, the main part of which was originally developed by Armijn and to which Carsten has added a number of command line options and further functionality in order to make it more suitable for the daily practice of a software compliance officer. This tool is called Callgraph, is maintained by OSADL and is made publicly available in a Git repository. However, this tool has the disadvantage that its use is limited to binary executable files with an ELF header. Consequently, it cannot be used to analyze the import dependency of Python modules. Therefore, another tool was developed to analyze Python module dependency, which also will be presented in this practical section.
Recommended audience COOL December 2024 edition:
Software architects, software developers, software engineers and system integrators, Open Source officers, employees of internal legal departments, external legal advisors.
About the speakers of the COOL December 2024 edition:
- Armijn Hemel, Tjaldur Software Governance Solutions: Armijn is the owner of Tjaldur Software Governance Solutions. He is an active researcher of and internationally recognized expert in Open Source license compliance, supply chain management and binary analysis tooling. He studied computer science at Utrecht University in The Netherlands, where he pioneered reproducible builds with NixOS. In the past he served on the board of NLUUG and NixOS Foundation and was a member of the coreteam of gpl-violations.org. Last but not least, Armijn is the technical auditor of the OSADL License Compliance Audit (LCA).
- Dr. Carsten Emde, OSADL: Carsten Emde has a long history of professional activities in the field of software development, system integration and training, particularly for embedded system software. Carsten is specialized on graphical user interface, robotics, real-time systems and on legal and business aspects of using Open Source software in industry. He has been managing OSADL since its foundation in 2005.
Upcoming COOL webinars
Upcoming COOL webinars in 2025:
- Wednesday, January 29, 2025, 2pm to 4pm CET - Legal COOL:
Open Source compliance: Technical must-knows for legal experts - Wednesday, February 26, 2025, 2pm to 4pm CET - Technical COOL:
Understanding and using eBPF of the Linux kernel - Wednesday, March 26, 2025, 2pm to 4pm CET - Legal COOL:
Copyright aspects of training and using AI - Wednesday, April 30, 2025, 2pm to 4pm CEST - Technical COOL:
Industrial I/O subsystem of the Linux kernel
Download of COOL overview January - April 2025 as PDF file (v1)
Past COOL webinars
(Click on title to expand display.)
2024
- Wednesday, December 11, 2024 (2pm to 4pm CET) - Technical COOL: Taking license compliance to the next level: Investigate component interdependency (This event has passed. Thank you to all attendees who joined COOL virtually.)
- Wednesday, November 27, 2024 (2pm to 4pm CET) - Legal COOL: Open Source tools for compliance with CRA and similar regulations (This event has passed. Thank you to all attendees who joined COOL virtually.)
- Wednesday, October 16, 2024 (2pm to 4pm CEST) - Technical COOL: Comparing systemd and other init processes for embedded systems (This event has passed. Thank you to all attendees who joined COOL virtually.)
- Wednesday, September 25, 2024 (2pm to 4pm CEST) - Legal COOL: Integrating OSSelot curation data into OpenEmbedded: Presenting meta-osselot (This event has passed. Thank you to all attendees who joined COOL virtually.)
- May to August 2024: COOL summer break
- Wednesday, April 24, 2024 (2pm to 4pm CEST) - Technical COOL: Flutter for embedded systems - a new approach for industrial HMIs (This event has passed. Thank you to all attendees who joined COOL virtually.)
- March 20, 2024 (2pm to 4pm CET) - Legal COOL: The Open Source Curation Database OSSelot: How to curate and contribute (This event has passed. Thank you to all attendees who joined COOL virtually.)
- February 28, 2024 (2pm to 4pm CET) - Technical COOL: Security of embedded systems (This event has passed. Thank you to all attendees who joined COOL virtually.)
- January 31, 2024 (2pm to 4pm CET) - Legal COOL: Licensing Linux distributions: Snaps, Yocto and beyond (This event has passed. Thank you to all attendees who joined COOL virtually.)
- Download of COOL overview January - April 2024 as PDF file (v2)
2023
- December 13, 2023 (2pm to 4pm CET) - Technical COOL edition: Edge computing: Rationale, concept and presentation of an Open Source solution for lightweight devices (This event has passed. Thank you to all attendees who joined COOL virtually.)
- November 22, 2023 (2pm to 4pm CET) - Legal COOL edition: EU Cyber Resilience Act (CRA) - Current status of the draft and how companies should prepare for it (This event has passed. Thank you to all attendees who joined COOL virtually.)
- October 18, 2023 (2pm to 4pm CEST) - Technical COOL edition: Dynamically changing frequencies and real-time on a single platform – How is this possible? (This event has passed. Thank you to all attendees who joined COOL virtually.)
- September 20, 2023 (2pm to 4pm CEST) - Legal COOL edition: Secure Boot and (L)GPL installation obligations: Solutions for compliance (This event has passed. Thank you to all attendees who joined COOL virtually.)
- June, July, August 2023: COOL summer break
- May 17, 2023 (2pm to 4pm CEST) - Technical COOL edition: "Industrie 4.0" - Introduction and use cases (This event has passed. Thank you to all attendees who joined COOL virtually.)
- April 26, 2023 (2pm to 4pm CEST) - Legal COOL edition: OSS Review Toolkit (ORT) (This event has passed. Thank you to all attendees who joined COOL virtually.)
- March 29, 2023 (2pm to 4pm CEST) - Technical COOL edition: Programming for Linux PREEMPT_RT: How to do it the right way? (This event has passed. Thank you to all attendees who joined COOL virtually.)
- February 15, 2023 (2pm to 4pm CET) - Legal COOL edition: Open Source software and dual licensing (This event has passed. Thank you to all attendees who joined COOL virtually.)
- January 25, 2023 (2pm to 4pm CET) - Technical COOL edition: Make Linux better and faster with PAPI and Perf (This event has passed. Thank you to all attendees who joined COOL virtually.)
2022
- December 14, 2022 (02:00 - 04:00 CET) - Legal COOL edition: Sharing and reusing OSS compliance information: The Open Source Curation Database (This event has passed. Thank you to all attendees who joined COOL virtually.)
- November 30, 2022 (02:00 - 04:00 CET) - Technical COOL edition: Flavors of real-time: OS-9, QNX, VxWorks, Xenomai, Zephyr, FreeRTOS, Linux PREEMPT_RT (This event has passed. Thank you to all attendees who joined COOL virtually.)
- October 25, 2022 (02:00 - 04:00 CEST) - Legal COOL edition: SaaS, Cloud, Javascript: License obligations for using FOSS on the Web (This event has passed. Thank you to all attendees who joined COOL virtually.)
- September 21, 2022 (02:00 - 04:00 CEST) - Technical COOL edition: Real-time in a virtual system?! Comparing real-time capabilities of various types of Linux hypervisors and containers (This event has passed. Thank you to all attendees who joined COOL virtually.)
- June, July, August 2022: COOL summer break
- May 18, 2022 (2pm to 4pm CEST): OSADL Open Source Policy with special emphasis on the role of the Open Source Compliance Officer (OSCO) (This event has passed. Thank you to all attendees who joined COOL virtually.)
- April 27, 2022 (2pm to 4pm CEST): Comparison of the various Linux hypervisor technologies with respect to real-time capabilities (Please note: The COOL April edition has been postponed at short notice to fall 2022! The replacement date will be announced as soon as possible.)
- March 23, 2022 (2pm to 4:30pm CET): New and established tools for software scanning (This event has passed. Thank you to all attendees who joined COOL virtually.)
- February 23, 2022 (2pm to 4pm CET): Current status of Linux real-time on its way to mainline (This event has passed. Thank you to all attendees who joined COOL virtually.)
- January 26, 2022 (2pm to 4pm CET): Open Source training concepts (This event has passed. Thank you to all attendees who joined COOL virtually.)
2021
- December 15, 2021 (2pm to 4pm CET): Accelerated graphics with real-time. How do they play together? Part 2 with special consideration of ARM processors (This event has passed. Thank you to all attendees who joined COOL virtually.)
- November 17, 2021 (2pm to 4pm CET): Open Source software license compliance certification and how to get there (This event has passed. Thank you to all attendees who joined COOL virtually.)
- October 20, 2021 (2pm to 4pm CEST): Time synchronization for TSN: How to obtain both stable and correct time (This event has passed. Thank you to all attendees who joined COOL virtually.)
- September 22, 2021 (2pm to 4pm CEST): Distributing Docker container applications: Legal challenges and solutions (This event has passed. Thank you to all attendees who joined COOL virtually.)
- June, July, August 2021: COOL summer break
- May 19, 2021 (2pm to 4 pm CEST): Accelerated graphics with real-time. How do they play together? (This event has passed. Thank you to all attendees who joined COOL virtually.)
- April 21, 2021 (2pm to 4pm CEST): Redistribution of a Linux distribution - not as easy as it might appear (This event has passed. Thank you to all attendees who joined COOL virtually.)
- March 24, 2021 (2pm to 4pm CET): Security of embedded Linux systems (This event has passed. Thank you to all attendees who joined COOL virtually.)
- February 24, 2021 (2pm to 4pm CET): License compliance policy (This event has passed. Thank you to all attendees who joined COOL virtually.)
- January 20, 2021 (2pm to 4pm CET): Linux real-time on its way to mainline (This event has passed. Thank you to all attendees who joined COOL virtually.)
2020
- December 16, 2020 (2pm to 4pm CET): License compliance and related company processes (This event has passed. Thank you to all attendees who joined COOL virtually.)
- November 18, 2020 (2pm to 4pm CET): The OSADL QA Farm and how real-time Ethernet is implemented (This event has passed. Thank you to all attendees who joined COOL virtually.)
- October 22, 2020 (2pm to 4pm CEST): Open Source software copyright issues with special focus on redistributing Docker images (This event has passed. Thank you to all attendees who joined COOL virtually.)
Please click on the respective COOL edition in order to display the full agenda and more details about the lectures and the respective guest speakers.
Download of COOL overview January - April 2024 as PDF file (v2)
Download of COOL overview September - December 2023 as PDF file (v4)
Download of COOL overview January to May 2023 as PDF file
Download of COOL overview September to December 2022 as PDF file
Download of COOL overview January to May 2022 (new - v7) as PDF file
Download of COOL overview September - December 2021 as PDF file
Download of COOL overview January - May 2021 as PDF file
COOL conference language
The COOL sessions will be in English language.
COOL registration
Please use the online registration form to register for a particular COOL edition: 
Online registration form.
The access data will be sent to the registered participants shortly before the event.
COOL participation fee
Participation in COOL is free of charge.
COOL feedback
We would appreciate if participants of COOL completed and submitted the following feedback questionnaire in order to better meet their requirements and consider their suggestions in future events: Feedback sheet. Thanks in advance.
COOL presentations
The presentations and video clips of all COOL sessions will be made available after the event. Material of the theoretical part will be publicly available, material of the practical part will be available exclusively for OSADL members or participants with login.
COOL Presentations and video clips (Member or participant login required to display material of the advanced lectures)
Privacy policy
When you register for participation in the event you agree that the personal data you enter in the registration form will be processed at OSADL as necessary (see our privacy policy).
You may revoke this agreement at any time by email, mail or phone using the communication data provided at the imprint page, but this will also cancel your registration.
Questions?
Please do not hesitate to contact us in case you have further questions:
Andrea Ruf
officeªosadl.org
Phone.: +49 6221 98504 13
