[MacPorts] #61474: gmp @6.2.0_1: clang: error: invalid version number in 'MACOSX_DEPLOYMENT_TARGET=11.0'

[MacPorts]

#61474: gmp @6.2.0_1: clang: error: invalid version number in
'MACOSX_DEPLOYMENT_TARGET=11.0'
-----------------------+--------------------
  Reporter:  pavibhai  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.6.4
Resolution:            |   Keywords:  bigsur
      Port:            |
-----------------------+--------------------

Comment (by pavibhai):

 Replying to [comment:10 mouse07410]:
 > > If you open Xcode.app, it will usually offer to upgrape the command
 line tools if they are out of date.
 >
 > It looks like Macports is not entirely happy with the command line tools
 installed via/by Xcode. Macports seems to require CLT that get installed
 into {{{/Library/Developer/CommandLineTools}}} by a separate installer
 that one downloads directly from the Apple Developer site.
 >
 > I adjust complained about this since time ago in a different ticket.

 Yeah same issue with me, after directly installing the command line tools
 I am able to move forward without this error.

-- 
Ticket URL: <https://trac.macports.org/ticket/61474#comment:12>
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