[MacPorts] #62390: argtable @2.13: error: implicitly declaring library function 'isspace'

[MacPorts]

#62390: argtable @2.13: error: implicitly declaring library function 'isspace'
--------------------------+-----------------------------
  Reporter:  cooljeanius  |      Owner:  (none)
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.6.4
Resolution:               |   Keywords:  bigsur catalina
      Port:  argtable     |
--------------------------+-----------------------------
Changes (by cooljeanius):

 * Attachment "argtableout.log" added.

 terminal output from attempting to build argtable

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Ticket URL: <https://trac.macports.org/ticket/62390>
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