[MacPorts] #63070: Failed to build gcc9 on Mac OS X 10.7.5

[MacPorts]

#63070: Failed to build gcc9 on Mac OS X 10.7.5
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  Reporter:  YesNo801  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.7.1
Resolution:            |   Keywords:  gcc9
      Port:  gcc9      |
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Comment (by kencu):

 Don't be too frustrated. Building compilers like gcc or clang is about the
 most difficult thing you could ever ask of your system. It has to be
 perfect, pretty much -- all tools at the correct right versions, the right
 Xcode, the matching command line tools, the current correct versions of
 cctools and ld64, and nothing {{{sudo port select'ed}}} to screw up the
 right helper programs being found at the right time during the build.

 If even one little thing is out of proper order or position -- BOOM. No
 gcc build.

-- 
Ticket URL: <https://trac.macports.org/ticket/63070#comment:2>
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