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Interpretation when omitted

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This option is used to detect externally defined symbols that have not been referenced even once during the link processing.

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To output externally defined symbols that are not referenced.

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If the -form={object|relocate|library} option or -extract option is specified, this option will be invalid.

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If a load module file is input, this option will be invalid.

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This option must be specified together with the -message option.

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The a message may be output for the function that inline expansion was performed during compilation.
In this case, add a static declaration for the function definition to suppress the output of the message.

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In either of the following cases, the reference relationship cannot be analyzed correctly and the information notified through an output message will be incorrect.