[MacPorts] #63115: gcc11 is built for macOS 11.3 deployment target

[MacPorts]

#63115: gcc11 is built for macOS 11.3 deployment target
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  Reporter:  diekhans  |      Owner:  kjellpk
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.7.1
Resolution:            |   Keywords:  bigsur
      Port:  gcc11     |
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Comment (by kencu):

 for reasons that make sense once you know the big picture of MacPorts, the
 gcc libraries are built and installed  separately from the gcc port.

 So when you rebuilt gcc11, you actually did not rebuild and install the
 library that is causing the issue. That library is installed by a separate
 port, libgcc11.

 Even less obvious perhaps, the gcc 5 through gcc 10 libraries don't exist
 for the most part...those gcc versions all use the llibraries from the
 current gcc version, which is libgcc11 at the moment.

-- 
Ticket URL: <https://trac.macports.org/ticket/63115#comment:8>
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