Rene Rodriguez enhanced the build system for the intel/pti-gpu repository by refining include-path handling to reduce compiler warnings and simplify environment setup. He consolidated include-path management across C and C++ code, moving from the generic CPATH variable to explicit use of C_INCLUDE_PATH and CPLUS_INCLUDE_PATH, which improved build determinism and cross-language compatibility. His work focused on build system configuration and environment variable management using Shell scripting, resulting in a cleaner, more predictable build process. These changes lowered build noise, streamlined developer onboarding, and improved CI reliability, demonstrating a thoughtful approach to maintainability and cross-environment consistency within the project.