Multibuild for Zephyr RTOS

Explore the challenges and potential solutions for multi-image builds in Zephyr RTOS during this Birds of a Feather (BoF) session led by Marti Bolivar from Nordic Semiconductor. Dive into the current limitations of Zephyr's build system, which only supports generating single application images, and discuss the problems this poses for complex systems with interdependent images. Learn about Nordic's approach to solving this issue and examine various use cases, including bootloaders, secure vs. nonsecure Arm TrustZone images, and multi-core applications. Analyze the pros and cons of different implementation strategies, such as recursive vs. non-recursive builds, and consider how other systems like the Linux kernel handle similar challenges. Gain insights into potential solutions for managing shared headers, RPC calls, and flash layouts in multi-image builds. Participate in this ongoing conversation to help shape the future of Zephyr's build system and improve its ability to handle complex, multi-image applications.