[MacPorts] #70331: gcc14 (c++) can not compile trivial program

[MacPorts]

#70331: gcc14 (c++) can not compile trivial program
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  Reporter:  acmaggs  |      Owner:  (none)
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  gcc14    |
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Comment (by cjones051073):

 Mouse, my point was I suspect GCC has changed something that has made them
 sensitive to the precise Xcode version, so whilst I do not disagree they
 shouldn't be sensitive to the exact Xcode version, the fact you are up to
 date and the build bots are not are I think the probably (part of) the
 problem.

 Can you please try a few things.

 1. Try gcc13 and gcc12. gcc13 required the same changes as gcc14 in order
 for the latest versions to work, which include fixes for the 'fixincludes'
 mechanisms GCC has ( see  https://github.com/iains/gcc-13-branch/issues/20
 for the details). gcc12 does not though.
 2. Try building libgcc14+gcc14 from source, so against the SDK you have. I
 have the latest Xcode and my version works fine, but this is from when I
 built from source myself locally before pushing the new version).

 If we can prove to ourselves that it is GCC that is overly senstive to the
 SDK used to build itself, then a bug report should be opened at

 https://github.com/iains/gcc-14-branch/issues

 and/or

 https://github.com/iains/gcc-13-branch/issues

-- 
Ticket URL: <https://trac.macports.org/ticket/70331#comment:18>
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