Worked on the llvm/llvm-project repository to improve cross-platform build stability, focusing on resolving Darwin-specific issues in the integration of Hwloc with OpenMP. Addressed header inclusion mismatches by introducing the KMP_HWLOC_ENABLED preprocessor directive, ensuring that hwloc usage is accurately reflected in build configurations. This targeted C++ patch eliminated build failures on macOS, reduced ongoing maintenance overhead, and enhanced the reliability of OpenMP builds in continuous integration environments. Leveraged expertise in build systems, system programming, and OpenMP to deliver a solution that aligns preprocessor behavior with actual code paths, resulting in smoother macOS development and release processes for the project.