Worked on the apache/nuttx repository to enhance the build system by introducing conditional source management capabilities using CMake. Developed two new CMake functions that allow source files to be included or excluded based on defined conditions, leveraging existing patterns for consistency across build configurations. This approach improved the flexibility and maintainability of the build process, particularly for cross-platform and feature-flag driven development. Focused on aligning new utilities with established practices to reduce onboarding friction for contributors. Utilized skills in build systems and CMake scripting, delivering a feature that reduces maintenance overhead and minimizes the risk of incorrect source inclusion.