[MacPorts] #59837: macOS 10.14 SDK does not appear to be installed even though Command Line Tools are installed

[MacPorts]

#59837: macOS 10.14 SDK does not appear to be installed even though Command Line
Tools are installed
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  Reporter:  manulcaux  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  base       |    Version:
Resolution:             |   Keywords:
      Port:             |
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Comment (by manulcaux):

 Checking on my computer, as said in the last comment, although the install
 of CLT  (macOS 10.14) for Xcode 10.3 Jul 16, 2019 went OK, it is not found
 when running xcrun --sdk macosx10.14 --show-sdk-path :

 xcodebuild: error: SDK "macosx10.14" cannot be located. xcodebuild: error:
 SDK "macosx10.14" cannot be located. xcrun: error: unable to lookup item
 'Path' in SDK 'macosx10.14' [macp2034:~] caux%

 On the other hand, the SDK macOS10.15 is still present :

 xcrun --sdk macosx10.15 --show-sdk-path
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk

 Please note that I was doing all that because the SDK macOS10.14 is not
 present on my computer, nor in the  /Library/Developer folder, neither
 elsewhere...

 I do not now how to copy this from another location, if you can help,
 you'll be welcome !

-- 
Ticket URL: <https://trac.macports.org/ticket/59837#comment:12>
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