[MacPorts] #50656: gcc48 fails to build on El Capitan

[MacPorts]

#50656: gcc48 fails to build on El Capitan
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  Reporter:  lucas.pettey@…  |      Owner:  macports-tickets@…
      Type:  defect          |     Status:  closed
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.3.4
Resolution:  duplicate       |   Keywords:
      Port:  gcc48           |
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Comment (by kencu):

 Also see [ticket:54949]. The issue is bootstrapping with xcode9. It's
 probably fixable with some work, or else could be made to work by
 bootstrapping with something like gcc6, if there is a true need.

 For today, if you need it and you don't mind through some hoops, you might
 installing gcc6 or gcc7 and building gcc48 using that. `sudo port install
 gcc7`, then (after editing the highsierra blocker out of the portfile)
 `sudo port -v install gcc48 configure.compiler=macports-gcc-7`. There is a
 chance that might '''just work'''.

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Ticket URL: <https://trac.macports.org/ticket/50656#comment:8>
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