Worked on the rosbag2 repository to enhance compatibility with newer toolchains, focusing on the MCAP vendor integration. Addressed a critical build issue by backporting a missing cstdint include to the MCAP vendor library, ensuring successful compilation with GCC 15. Developed a CMake-based patch management mechanism to streamline the application of compatibility fixes, improving maintainability and reducing the risk of user-facing build failures. Validated these changes across platforms to support cross-platform portability. Utilized C++ and CMake, applying expertise in build systems and patch management to deliver targeted improvements that support ongoing toolchain upgrades and maintain robust integration for rosbag2.