[MacPorts] #43978: libgcc: error: unknown value '10.10' of -mmacosx-version-min

[MacPorts]

#43978: libgcc: error: unknown value '10.10' of -mmacosx-version-min
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  Reporter:  arthur@…  |      Owner:  mww@…
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.3.0
Resolution:            |   Keywords:  yosemite
      Port:  libgcc    |
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Comment (by arthurprat@…):

 Hello, I needed gcc47 so I manually applied the patch from r123168 (which
 was designed for gcc48, gcc49 and gcc410) to the gcc47 files. It seems to
 work, but is there anything I should worry about? A reason this patch was
 not applied to gcc47 too in the first place?

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Ticket URL: <https://trac.macports.org/ticket/43978#comment:23>
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