[MacPorts] #54994: gcc48 not supported on MacOS 10.13 High Sierra

[MacPorts]

#54994: gcc48 not supported on MacOS 10.13 High Sierra
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  Reporter:  manulcaux  |      Owner:
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:  highsierra
      Port:  gcc48      |
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Comment (by manulcaux):

 As suggested, I tried to find which ports were using gcc48, and following
 the instructions given in the Migration procedure instructions, I tried to
 upgrade the first one (alphabetically), which is ast.

 It tried to re-install it, and for that it downloaded gcc5 but failed to
 build it, please find the details in the attached file.

 May be I do not need anymore gcc4.8, but for sure I mandatory need gcc5
 for a few ports, ast and gildas at least.

 Therefore I am even more stuck !

 Many thanks for helping me.

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Ticket URL: <https://trac.macports.org/ticket/54994#comment:6>
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