Defining Additional Symbols

Besides the symbols provided from input files, you can supply additional global symbol references or global symbol definitions to a link-edit. In the simplest form, symbol references can be generated using the link-editor's -u option. Greater flexibility is provided with the link-editor's -M option and an associated mapfile. This mapfile enables you to define global symbol references and a variety of global symbol definitions. Attributes of the symbol such as visibility and type can be specified, See SYMBOL_SCOPE and SYMBOL_VERSION Directives for a complete description of the available options.