Worked on the open-mpi/ompi repository to address compatibility issues with GCC Link Time Optimization for MCA component structures. The solution involved introducing indirection for MCA component structures and modifying static component declarations and access patterns to prevent duplicate definitions and initialization failures. Developed the MCA_BASE_COMPONENT_INIT macro to streamline cross-component initialization, supporting more reliable linking under LTO. This work required in-depth knowledge of C programming, build systems, and compiler optimizations, particularly with static component pointers and macro design. The changes improved build stability and maintainability for LTO-enabled builds, demonstrating a methodical approach to cross-component design and build system integration.