[MacPorts] #64200: par2 @0.8.1+universal: Undefined symbols for architecture i386: ___atomic_compare_exchange ___atomic_load (was: Unable to Upgrade par2)

[MacPorts]

#64200: par2 @0.8.1+universal: Undefined symbols for architecture i386:
___atomic_compare_exchange ___atomic_load
---------------------+--------------------
  Reporter:  RobK88  |      Owner:  (none)
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.7.1
Resolution:          |   Keywords:  lion
      Port:  par2    |
---------------------+--------------------

Comment (by ryandesign):

 I assume you only see this problem with the +universal variant, since we
 show successful builds on the buildbot without the +universal variant.

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Ticket URL: <https://trac.macports.org/ticket/64200#comment:1>
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