[MacPorts] #61236: ld64 not defaulting to ld64_xcode on Catalina, causing TAPI link errors

[MacPorts]

#61236: ld64 not defaulting to ld64_xcode on Catalina, causing TAPI link errors
----------------------+----------------------
  Reporter:  mascguy  |      Owner:  kencu
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.6.3
Resolution:           |   Keywords:
      Port:  ld64     |
----------------------+----------------------

Comment (by kencu):

 All I can think of just now is that somehow base is not finding your
 {{{$xcodeversion}}} correctly. It should be 12, which is clearly >=
 11.0...

 If you feel like experimenting a bit, throw in a:

 {{{
 puts "Xcode version is "
 puts $xcodeversion
 }}}

 above that test in the Portfile and see what {{{port info}}} dumps out as
 your {{{$xcodeversion}}}.

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Ticket URL: <https://trac.macports.org/ticket/61236#comment:16>
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