[MacPorts] #67475: diffutils @3.10_0+universal: error: this system appears to support timestamps after mid-January 2038, but no mechanism for enabling wide 'time_t' was detected. Did you mean to build a 64-bit binary?

[MacPorts]

#67475: diffutils @3.10_0+universal: error: this system appears to support
timestamps after mid-January 2038, but no mechanism for enabling wide
'time_t' was detected. Did you mean to build a 64-bit binary?
------------------------+--------------------
  Reporter:  RobK88     |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.8.1
Resolution:             |   Keywords:
      Port:  diffutils  |
------------------------+--------------------

Comment (by RobK88):

 How would one test in a Portfile if the `+universal` variant has been
 selected?  Is there a global variable available?

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Ticket URL: <https://trac.macports.org/ticket/67475#comment:6>
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