Worked on improving cross-platform build stability for the oxcaml/oxcaml repository, focusing on resolving macOS-specific compilation issues. Addressed a bug in the Makefile configuration by refining the CPP extraction logic using shell scripting, specifically ensuring that values containing '=' were handled correctly to prevent malformed compiler arguments. Enhanced related scripts, including those in utils/dune and runtime/gen_primsc.sh, to maintain consistency and reliability across the build system. Leveraged expertise in Makefile and shell scripting to reduce build failures and streamline developer workflows. Collaborated on cross-component fixes, contributing to more robust build tooling and improved developer experience for macOS environments.