[MacPorts] #61521: xemacs @21.4.22: error: implicitly declaring library function 'exit'

[MacPorts]

#61521: xemacs @21.4.22: error: implicitly declaring library function 'exit'
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  Reporter:  wealthychef1  |      Owner:  dstrubbe
      Type:  defect        |     Status:  closed
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.6.4
Resolution:  duplicate     |   Keywords:  bigsur catalina
      Port:  xemacs        |
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Changes (by ryandesign):

 * status:  assigned => closed
 * resolution:   => duplicate


Comment:

 unistd.h does not define `exit()`; stdlib.h does. For each implicit
 declaration of function, it must be researched what the correct header is
 and the correct include must be added to the applicable code.

 Duplicate of #61383.

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Ticket URL: <https://trac.macports.org/ticket/61521#comment:5>
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