[MacPorts] #62474: tensorflow build fails on 10.15

[MacPorts]

#62474: tensorflow build fails on 10.15
----------------------------+--------------------------
  Reporter:  essandess      |      Owner:  emcrisostomo
      Type:  defect         |     Status:  assigned
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.6.4
Resolution:                 |   Keywords:
      Port:  py-tensorflow  |
----------------------------+--------------------------

Comment (by essandess):

 FWIW, I’m still not certain this isn’t an local configuration issue. For
 posterity, these commands work to build tensorflow:

 {{{
 xcrun --kill-cache
 sudo xcode-select --switch /Library/Developer/CommandLineTools
 xcrun --show-sdk-path
 /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk
 }}}

 Resetting the CLT path to its default breaks the build. This doesn’t work:

 {{{
 sudo xcode-select --reset
 xcrun --show-sdk-path
 /Applications/Xcode.app/Contents/Developer
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/62474#comment:23>
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