[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 i0ntempest):

 MacPorts 2.7 seem to have changed the way it finds SDKs, because the way
 Apple versions and puts SDKs in Xcode and CLTs changed when macOS 11 came
 out. Yes downgrading the whole Xcode installation might create problems
 with other ports. If you don't want to do that you might try downloading
 from https://xcodereleases.com and extract the 10.11 SDK only then put it
 into your current Xcode (and CLT) but I have no idea if that'll work. The
 sqlitebrowser port  itself did not have any changes other than upgrading.
 Other than these I can't offer much help as a newbie maintainer,
 especially on older OSes.

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Ticket URL: <https://trac.macports.org/ticket/62940#comment:10>
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