[MacPorts] #59951: ossp-uuid +perl5_26: fatal error: 'sys/types.h' file not found

[MacPorts]

#59951: ossp-uuid +perl5_26: fatal error: 'sys/types.h' file not found
------------------------+----------------------
  Reporter:  essandess  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:  catalina
      Port:  ossp-uuid  |
------------------------+----------------------

Comment (by djlambert):

 I also encountered this issue. I had to manually download the command-line
 tools for my version of Xcode and reinstall them.

 https://developer.apple.com/download/more/?=for%20Xcode

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Ticket URL: <https://trac.macports.org/ticket/59951#comment:7>
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