Worked on the zephyrproject-rtos/poky repository to enhance build determinism and reproducibility across multiple GCC variants. Addressed issues with nondeterministic build paths by removing absolute paths from include-fixed header directories and libtool scripts, ensuring consistent results in both target and cross-compilation environments. Focused on eliminating TMPDIR-related sources of nondeterminism, which reduced QA failures and improved reliability for CI and cross-variant releases. Utilized Shell scripting and deep knowledge of build systems and the Yocto Project to sanitize build scripts and headers, demonstrating a disciplined approach to patch management and distribution while maintaining traceability through well-documented code changes.