[MacPorts] #65512: libgcc9 not available on Darwin 18 i386

[MacPorts]

#65512: libgcc9 not available on Darwin 18 i386
----------------------+--------------------
  Reporter:  efji     |      Owner:  (none)
      Type:  defect   |     Status:  closed
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:  wontfix  |   Keywords:
      Port:  gcc9     |
----------------------+--------------------
Changes (by cjones051073):

 * status:  new => closed
 * resolution:   => wontfix


Comment:

 Yes, this is currently intentional. gcc12, which now provides the primary
 gcc runtime (shared by all gcc versions) has migrated to use @rpath.

 See https://trac.macports.org/ticket/65472 for more details.

 gcc 10,11 and 12 have currently been updated to use upstream updates that
 support @rpath. Gcc9 and older have not, so whilst they are technically
 still buildable, they are problematic to use on OSX10.11 and newer, which
 is where gcc upstream now enables @rpath usage. For this reason gcc9 and
 older are (currently, upstream *might* in time backport support to some
 older gcc versions) no longer supported on OSX10.11 and newer.

 You should uninstall (lib)gcc9 and migrate instead to a newer gcc release,
 10 or newer.

-- 
Ticket URL: <https://trac.macports.org/ticket/65512#comment:2>
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