[MacPorts] #64713: qscintilla-qt5: xcrun: error: SDK "macosx11" cannot be located

[MacPorts]

#64713: qscintilla-qt5: xcrun: error: SDK "macosx11" cannot be located
-----------------------------+-----------------------
  Reporter:  pcmock          |      Owner:  michaelld
      Type:  defect          |     Status:  assigned
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:
Resolution:                  |   Keywords:
      Port:  qscintilla-qt5  |
-----------------------------+-----------------------

Comment (by kencu):

 I'm not sure how we can reliably get around this issue with all the ports
 that use xcrun without requiring xcode.

 If I have analyzed it correctly, issue seems to be that xcrun will not
 work properly on newer systems if the user has xcode installed but
 macports sets the DEVELOPER_DIR to the CLTs (as it does by default).

 If the user does not have xcode installed, I think it works fine, and
 xcode is not actually needed, though. (You can test this by moving your
 Xcode.app to Xcode-somethingelse.app and retrying the build without adding
 "use_xcode yes").

 So if that turns out to be true, xcode is really not needed, we just need
 to sort out how to set DEVELOPER_DIR in base properly. It may be too hard
 / too much trouble to go through all those proper steps, though --
 assuming that analysis turns out to be right.

-- 
Ticket URL: <https://trac.macports.org/ticket/64713#comment:18>
MacPorts <https://www.macports.org/>
Ports system for macOS