Worked on the microsoft/vcpkg repository to deliver a compatibility patch for Qtbase targeting macOS 26. Addressed platform-specific build issues by removing deprecated AGL API references and correcting OpenGL library linking, ensuring that Qtbase could reliably build against the latest macOS requirements. Focused on improving cross-platform stability and reducing future maintenance by aligning integration with updated platform standards. Utilized CMake and OpenGL expertise to debug and resolve the compatibility problem, demonstrating a methodical approach to patch creation and build system updates. The work centered on bug fixing rather than feature development, emphasizing careful analysis and targeted improvements within macOS development environments.