DO-178B standard has provided the guidelines for Civil Airborne Software Development. Compared with traditional software engineering, DO-178B standard is object-oriented and process-oriented. This standard requires related objects for different level software. The applicant should provide the evidences to the certification authority to show the software complies with the airworthiness objects. As for the software coding and integration process, DO-178B requires the output of software coding and integration process is correct and completed. But this standard doesn't provide how to meet with the objects. By radio tuning software coding and integration process and a research on the compiling and linking process explains how to comply with this object of DO-178B.