[MacPorts] #61236: OpenBLAS 0.3.10_1 +native Build Fails on MacOS 10.15.6 and Xcode 12.0

[MacPorts]

#61236: OpenBLAS 0.3.10_1 +native Build Fails on MacOS 10.15.6 and Xcode 12.0
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  Reporter:  mascguy   |      Owner:  NicosPavlov
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.6.3
Resolution:            |   Keywords:
      Port:  OpenBLAS  |
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Comment (by kencu):

 You should not need to force the xcode variant on Catalina. If you do,
 there is some issues.
 It does default to the xcode variant on my Catalina system with current
 xcode.

 So -- have you somehow specifically disabled that xcode variant with
 something in your variants.conf?

 There was another user a few weeks ago on Catalina who also had the wrong
 ld64 installed, but his was defaulting properly, so easily fixed, whereas
 yours, for some reason, is not.

-- 
Ticket URL: <https://trac.macports.org/ticket/61236#comment:11>
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