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4.4 Listing exported library entry point functions

Both system shared libraries and GLibs require a dispatch table and a small amount of other assembler support code. You can write this by hand, or you can use stubgen to generate the needed code from an export clause:

export { function-name... }

Dispatch table entries are generated in the order in which function names are listed in the export clause. Thus, for the sake of binary compatibility between releases of your library, it is important to avoid changing the ordinal positions of function names. For example, new functions being added to an existing library should be added at the end of the export clause, after the existing functions names.