[MacPorts] #58442: gcc9 (and other gccN) fails to install on Mojave, Xcode-10.2.1

[MacPorts]

#58442: gcc9 (and other gccN) fails to install on Mojave, Xcode-10.2.1
-------------------------+--------------------
  Reporter:  mouse07410  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  gcc9        |
-------------------------+--------------------

Comment (by cjones051073):

 Replying to [comment:25 kencu]:
 > The llvm ports can be quite sensitive. I found some version of llvm
 crashing when built with one clang version, but not when built with
 another clang version.

 It looks like the issue is in fact with the llvm/clang ports, and not gcc.
 The recent gcc updates did not touch macports clang compilers, it simply
 uses them...

 But why its affecting the OP here, and no one else is beyond me at this
 point.

-- 
Ticket URL: <https://trac.macports.org/ticket/58442#comment:29>
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