During a two-month period, Marshall focused on build system and packaging improvements for open source C++ projects. For valgur/conan-center-index, he enhanced the LLVM-core CMake build to support cross-architecture compatibility, introducing configurable RTTI options and exposing key build flags to improve downstream stability for package managers like Conan. In KhronosGroup/Vulkan-ValidationLayers, Marshall updated the CMake configuration to prefer an external parallel hashmap (phmap) when available, improving packaging readiness and runtime efficiency. His work demonstrated depth in C++ development, CMake, and package management, addressing platform-specific challenges and enabling more reliable, reproducible builds for diverse development environments.