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2973 :: How to export data to C

• romov (orginal) [2017-05-25T14:50:57+02:00] view original

  I am trying to export a variable from an executable binary on Windows. E.g:

  __declspec(dllexport) int MyVar = 5;
  Run

  However simply decorating it with exportc pragma doesn't seem to work.

  let MyVar {.exportc.} : int = 5
  Run

  How does one export variables in Nim?

  P.S. For now I am using emit workaround for this.

  {.emit: """
  __declspec(dllexport) int MyVar = 5;
  """.}
  Run

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• Varriount (orginal) [2017-05-25T15:33:41+02:00] view original

  Are you exporting a const?

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• romov (orginal) [2017-05-25T16:29:29+02:00] view original

  No, just a regular variable declared using var/let statement.

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• Araq (orginal) [2017-05-29T08:12:33+02:00] view original

  This is not supported via exportc, but you can also use a .codegenDecl annotation to achieve it, no need for .emit.

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