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If I put an extrn directive in my code, flat assembler emits the external reference to the object file even if the code doesn reference the symbol, how can I avoid it?

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If I put an extrn directive in my code, flat assembler emits the external reference to the object file even if the code doesn reference the symbol, how can I avoid it?

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You can redefine extrn as macroinstruction, which will emit the reference only if the symbol is used somewhere, for example:

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