[MacPorts] #63558: qscintilla-qt5 @ 2.13.0_0: Could not resolve SDK Path for 'macosx10.11'

[MacPorts]

#63558: qscintilla-qt5 @ 2.13.0_0: Could not resolve SDK Path for 'macosx10.11'
-----------------------------+---------------------------------
  Reporter:  thetrial        |      Owner:  michaelld
      Type:  defect          |     Status:  assigned
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.7.1
Resolution:                  |   Keywords:  elcapitan legacy-os
      Port:  qscintilla-qt5  |
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Comment (by michaelld):

 I started looking into this once ... it's an issue with how Qt determines
 the SDK path. Can you report back what the following command returns:
 {{{
 /bin/ls -lAF $(xcode-select -p)/Platforms/MacOSX.platform/Developer/SDKs/
 }}}

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Ticket URL: <https://trac.macports.org/ticket/63558#comment:2>
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