Oleg Butakov focused on stabilizing cross-platform builds for C++ projects, addressing macOS GCC compatibility issues in both the microsoft/vcpkg and uxlfoundation/oneTBB repositories. He resolved persistent build failures by refining conditional logic for GNU assembler version detection and adjusting compiler diagnostic pragmas, ensuring WAITPKG intrinsics were enabled only when compatible. Using C++ and CMake, Oleg’s targeted patches improved build reliability and reduced CI noise, benefiting both local development and downstream consumers. His work emphasized maintainability by linking fixes to auditable commits and documenting compatibility strategies, demonstrating depth in build systems, compiler configuration, and cross-platform development over the two-month period.