Abstract: A computer implemented method, apparatus, and computer program product for filtering source code are described. A code filtering compiler identifies an entry for a named entity in a symbol table. When a flag for the named entity in the symbol table indicates the named entity is referenced in source code, the code filtering compiler retrieves coordinates from the entry for the named entity in the symbol table. The coordinates identify a location of a definition associated with the named entity in the source code. The definition for the named entity located at the coordinates from the source code is copied into a filtered source listing. The filtered source listing includes a set of definitions from a set of header files associated with named entities that are referenced in the source code. Definitions associated with entities that are unreferenced in the source code are absent from the filtered source listing.

Abstract: The invention provides a compiler for compiling source code files to generate corresponding object code files, the source code files including a first source code file and a second source code file, the first source code file having an initial occurrence of a unit of source code, and the second source code file having a subsequent occurrence of the unit of source code, the compiler including means for compiling the first source code file to generate the first object code file having a first unit of object code representing the initial occurrence of the unit of source code, and means for compiling the second source code file to generate the second object code file having a pointer to the first unit of object code, whereby the pointer supplants a second unit of object code representing the subsequent occurrence of the unit of source code.

Abstract: The invention provides a compiler for compiling source code files to generate corresponding object code files, the source code files including a first source code file and a second source code file, the first source code file having an initial occurrence of a unit of source code, and the second source code file having a subsequent occurrence of the unit of source code, the compiler including means for compiling the first source code file to generate the first object code file having a first unit of object code representing the initial occurrence of the unit of source code, and means for compiling the second source code file to generate the second object code file having a pointer to the first unit of object code, whereby the pointer supplants a second unit of object code representing the subsequent occurrence of the unit of source code.