Worked on the espressif/binutils-gdb repository to address cross-platform build and testing issues, focusing on improving Windows and MinGW compatibility. Applied C programming and debugging skills to resolve compilation and linking errors by introducing explicit type casting for FD_ISSET and implementing a MinGW-specific alarm stub, which reduced platform-specific build failures. Additionally, stabilized continuous integration by correcting documentation formatting in self-test help strings, ensuring clearer output and more reliable test results. The work emphasized cross-platform development and build system maintenance, resulting in enhanced CI reliability, improved documentation clarity, and a smoother onboarding process for developers working across different environments.