Bin Lan focused on improving build reliability in the zephyrproject-rtos/poky repository, specifically addressing issues with lttng-ust example builds in an embedded Linux cross-compilation environment. By implementing explicit library search paths and configuring rpath-link settings, Bin resolved undefined reference errors that occurred when RPATH was stripped, ensuring proper linkage for both standard and CMake-based builds. The work involved patching and backporting fixes to address cmake-multiple-shared-libraries errors, ultimately reducing build flakiness and clarifying linker behavior for developers. Using C and Shell, Bin demonstrated depth in build systems and cross-compilation, contributing to a more stable and maintainable toolchain.