[MacPorts] #63085: clang-12: compiler-rt build sometimes fails parallel building

[MacPorts]

#63085: clang-12: compiler-rt build sometimes fails parallel building
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  Reporter:  blair     |      Owner:  kencu
      Type:  defect    |     Status:  closed
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:  fixed     |   Keywords:
      Port:  clang-12  |
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Comment (by kencu):

 upstream has committed a proper fix for this:

 https://github.com/llvm/llvm-
 project/commit/b31080c596246bc26d2493cfd5e07f053cf9541c#diff-
 41075bacada9ef13d442a98a6ab34ffd268a8d194be81a9263ce3772bfad8324

 I can backport that into our clang-12 patches and then presumably re-
 enable parallel building.

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Ticket URL: <https://trac.macports.org/ticket/63085#comment:30>
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