
Worked on the CTSRD-CHERI/cheribuild repository to deliver cross-architecture build system enhancements for CHERI and Morello Linux environments. Focused on consolidating Linux target configurations, improving cross-compilation workflows, and streamlining deployment pipelines, the work included integrating musl-based builds, refining QEMU-based testing, and enabling dynamic linking with compiler-rt builtins. Leveraged Python and Shell scripting to automate build processes, manage system configuration, and optimize CI cycles. Addressed build reliability by fixing kernel console logging and reducing redundant work through build directory reuse. The engineering approach emphasized reproducibility, maintainability, and reduced configuration complexity across embedded systems and virtualization targets.
December 2025 monthly summary for CTSRD-CHERI/cheribuild. Focused on enhancing Linux target flexibility and build stability to deliver tangible business value for downstream users and CI pipelines. Key features and fixes delivered: - Dynamic linking enablement for the Linux target and runtime lib packaging. This removes the static linking requirement and ensures libc.so is installed into the BusyBox root filesystem when dynamically linked, guaranteeing runtime availability in Linux deployments. - Header installation dependency cycle fix. Introduced separate targets for installing headers to break the cyclic dependency between musl and compiler-rt-builtins, allowing headers to install first and stabilizing the end-to-end build process. Impact and accomplishments: - Improved runtime reliability and deployment flexibility on Linux targets; reduced maintenance friction for cross-compilation and runtime environments. - Stabilized the build workflow by decoupling header installation from the compiler-rt/musl build steps, leading to fewer rebuilds and more deterministic CI results. Technologies and skills demonstrated: - Build system engineering for cross-target Linux workflows (dynamic vs static linking, rootfs packaging). - Dependency graph analysis and cycle resolution between musl and compiler-rt-builtins. - Runtime packaging considerations with BusyBox and libc integration.
December 2025 monthly summary for CTSRD-CHERI/cheribuild. Focused on enhancing Linux target flexibility and build stability to deliver tangible business value for downstream users and CI pipelines. Key features and fixes delivered: - Dynamic linking enablement for the Linux target and runtime lib packaging. This removes the static linking requirement and ensures libc.so is installed into the BusyBox root filesystem when dynamically linked, guaranteeing runtime availability in Linux deployments. - Header installation dependency cycle fix. Introduced separate targets for installing headers to break the cyclic dependency between musl and compiler-rt-builtins, allowing headers to install first and stabilizing the end-to-end build process. Impact and accomplishments: - Improved runtime reliability and deployment flexibility on Linux targets; reduced maintenance friction for cross-compilation and runtime environments. - Stabilized the build workflow by decoupling header installation from the compiler-rt/musl build steps, leading to fewer rebuilds and more deterministic CI results. Technologies and skills demonstrated: - Build system engineering for cross-target Linux workflows (dynamic vs static linking, rootfs packaging). - Dependency graph analysis and cycle resolution between musl and compiler-rt-builtins. - Runtime packaging considerations with BusyBox and libc integration.

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