Worked on the Esri/zlib-ng repository to improve cross-platform build reliability by addressing a FreeBSD-specific issue in the build configuration process. Focused on ensuring that POSIX and C11 standards were properly defined during try_compile checks, which prevented incorrect detection of aligned memory allocation support and reduced the risk of spurious HAVE_ALIGNED_ALLOC definitions. Utilized C++ and Shell scripting to refine build system configuration, resulting in more accurate and predictable builds across different environments. This targeted bug fix enhanced CI reliability and release quality, ultimately lowering maintenance costs and improving the stability of cross-platform development workflows for the project.