[MacPorts] #62940: sqlitebrowser @ 3.12.2: Could not resolve SDK Path for 'macosx10.11'

[MacPorts]

#62940: sqlitebrowser @ 3.12.2: Could not resolve SDK Path for 'macosx10.11'
----------------------------+---------------------------------
  Reporter:  thetrial       |      Owner:  i0ntempest
      Type:  defect         |     Status:  assigned
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.7.0
Resolution:                 |   Keywords:  elcapitan legacy-os
      Port:  sqlitebrowser  |
----------------------------+---------------------------------

Comment (by thetrial):

 Xcode and the clt are installed properly for years. This happens on two
 machines. Qt-related software is not new in this environment – owncloud-
 client, KeePassXC, wireshark etc.

 I tried again, it failed, I’ll attach the main log.

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Ticket URL: <https://trac.macports.org/ticket/62940#comment:3>
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