[MacPorts] #66549: qt511-qtimageformats @5.11.3_2: Could not resolve SDK Path for 'macosx10.11' using --show-sdk-path

[MacPorts]

#66549: qt511-qtimageformats @5.11.3_2: Could not resolve SDK Path for
'macosx10.11' using --show-sdk-path
-----------------------------------+---------------------------------
  Reporter:  thetrial              |      Owner:  MarcusCalhoun-Lopez
      Type:  defect                |     Status:  assigned
  Priority:  Normal                |  Milestone:
 Component:  ports                 |    Version:  2.8.0
Resolution:                        |   Keywords:  elcapitan legacy-os
      Port:  qt511-qtimageformats  |
-----------------------------------+---------------------------------

Comment (by thetrial):

 Addition: I installed the ports MacOSX10.11.sdk and MacOSX10.12.sdk,
 hoping that would solve this. It did not.
 {{{
 xcrun --show-sdk-path
 }}}
 still gives
 {{{
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk
 }}}

 {{{
 --sdk macosx10.12 --show-sdk-version
 }}}

 gives


 {{{
 10.12
 }}}


 {{{
 --sdk macosx10.11 --show-sdk-version
 }}}
 gives

 {{{
 xcodebuild: error: SDK "macosx10.11" cannot be located.
 xcodebuild: error: SDK "macosx10.11" cannot be located.
 xcrun: error: unable to lookup item 'SDKVersion' in SDK 'macosx10.11'
 }}}
 What’s wrong?

-- 
Ticket URL: <https://trac.macports.org/ticket/66549#comment:1>
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