[MacPorts] #68239: Xcode 15 and GCC: linker complains that "duplicate LC_RPATH are deprecated"

[MacPorts]

#68239: Xcode 15 and GCC: linker complains that "duplicate LC_RPATH are deprecated"
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  Reporter:  szhorvat  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  gcc12     |
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Comment (by cjones051073):

 You are using the wrong otool option above. You need to use -l (lower
 case) and check the RPATH entries. What you will find is there are
 duplicates in that list, which is precisely what the above warning is tell
 you.

 I don’t at this time believe this is something we are doing wrong in the
 macports gcc packaging, but I could be wrong. I more suspect this is just
 something upstream GCC will have to address themselves. For now ignore the
 warnings.

 Yes, I am aware of the linker issue as well. This is also I believe either
 an Xcode, or GCC issue, so the fix will have to come from one or other of
 those parties as well.

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Ticket URL: <https://trac.macports.org/ticket/68239#comment:1>
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