During December 2024, this developer enhanced cross-platform compatibility for the ruby/ruby and ruby/json repositories, focusing on Solaris 10 support. They addressed macro compatibility issues by substituting the MAYBE_UNUSED macro with RBIMPL_ATTR_MAYBE_UNUSED, ensuring successful builds on Oracle Developer Studio. To improve the JSON parser’s portability, they implemented a non-native strnlen function for Solaris 10, providing a fallback where the native version was unavailable. Their work involved C programming, system programming, and build systems, resulting in reduced platform-specific failures and more robust CI processes. These contributions strengthened the reliability and portability of Ruby’s core and JSON libraries across diverse environments.