Andreas Behnke contributed to the JuliaGPU/pocl repository by enhancing both build system reliability and kernel compilation stability. He unified X86 architecture handling in CMake, consolidating variable usage across x86_64 and i386 targets and clarifying distinctions between X32 and I386, which improved cross-architecture build consistency and maintainability. Additionally, Andreas introduced a regression test targeting a specific LLVM 1608 ICE/segfault in OpenCL kernel compilation, establishing safeguards against the reintroduction of this critical error as LLVM and kernel pipelines evolve. His work leveraged C++, CMake, and OpenCL, demonstrating depth in build system configuration and regression testing for robust software delivery.