[MacPorts] #58659: nghttp2: fails to build with non-standard xcode path

[MacPorts]

#58659: nghttp2: fails to build with non-standard xcode path
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  Reporter:  lkraider  |      Owner:  Schamschula
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.5.4
Resolution:            |   Keywords:
      Port:  nghttp2   |
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Changes (by lkraider):

 * Attachment "main.log" added.

 build log

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Ticket URL: <https://trac.macports.org/ticket/58659>
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