Two ways I know of:

  1. Add the functions to be exported to the .def file.
  2. Add __declspec(dllexport) inline with each exported function definition.

Update: See for pros and cons

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In reply to Re: [XS on Win32] How to have the extension's dll export its symbols. by BrowserUk
in thread [XS on Win32] How to have the extension's dll export its symbols. by syphilis

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