[MacPorts] #42354: pHash fatal error: '/usr/include/complex.h' file not found

[MacPorts]

#42354: pHash fatal error: '/usr/include/complex.h' file not found
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  Reporter:  charles@…  |      Owner:  macports-tickets@…
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.2.1
Resolution:             |   Keywords:
      Port:  pHash      |
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Comment (by ryandesign@…):

 And is that file actually there on disk or not? If not, you need to
 install the Xcode command line tools to put it there, by running `xcode-
 select --install`.

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Ticket URL: <https://trac.macports.org/ticket/42354#comment:1>
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