Functionality from an object file can be incorporated into an already existing binary file. Functions from the object file can be intelligently inserted into the binary file with the guidance of control flow analysis of both the binary file and the object file. Symbols not defined in the symbol table of the binary file are added to the symbol table of the binary file. When symbols of the object file and the binary file overlap, then priority is given to the object file symbol definitions. The ability to incorporate functionality from an object file into an existing binary file reduces logistical overhead and provides flexibility in code development and maintenance.