Joshua focused on enhancing build system resilience and cross-project compatibility for the curl and SDL repositories. He addressed two critical build issues by refining CMake configuration and dependency management. For curl, Joshua improved the handling of optional OpenSSL and Zlib dependencies, ensuring the build process adapts gracefully when these libraries are disabled or provided externally. In SDL, he implemented guarded logic for LibUSB dynamic library handling, preventing unnecessary calls and reducing build failures when certain features are off. His work demonstrated depth in CMake scripting, build system management, and library integration, resulting in more robust and portable multi-repository development workflows.