Worked on enhancing Apple-native build capabilities for the Esri/harfbuzz and facebook/zstd repositories by updating CMake-based build systems to support native Apple frameworks on macOS and iOS. Leveraged C++ and CMake to conditionally enable framework targets, set appropriate framework properties, and standardize integration patterns across both projects. Improved build compatibility by lowering the minimum required CMake version for zstd and maintained repository hygiene by updating gitignore rules to exclude generated artifacts. Provided clear documentation to streamline developer onboarding and usage of Apple frameworks, ultimately reducing build friction and improving maintainability for Apple-platform distributions across both repositories.