[MacPorts] #65055: Broken symbolic link libgcc_ext.10.5.dylib and libgcc_ext.10.4.dylib

[MacPorts]

#65055: Broken symbolic link libgcc_ext.10.5.dylib and libgcc_ext.10.4.dylib
--------------------------+--------------------
  Reporter:  Serge3leo    |      Owner:  (none)
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.7.2
Resolution:               |   Keywords:
      Port:  gcc9, gcc10  |
--------------------------+--------------------

Comment (by kencu):

 the idea is that all gcc versions on all newer systems as supposed to look
 here for the SDK:
 {{{
 /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk
 }}}

 Versioned SDKs that were used previously became unreliable when Apple
 started changing the versioning very frequently, as our gcc versions bake
 in the SDK path (which is also just plain wrong, the SDK should be found
 dynamically like xcrun does when using clang, but we can't seem to find a
 good way to do that with gcc so we bake it in).

-- 
Ticket URL: <https://trac.macports.org/ticket/65055#comment:10>
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