[MacPorts] #52721: xz @ 5.2.2 Building error

[MacPorts]

#52721: xz @ 5.2.2 Building error
-------------------------+------------------------
  Reporter:  giordamaug  |      Owner:  ryandesign
      Type:  defect      |     Status:  closed
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.3.4
Resolution:  invalid     |   Keywords:  sierra
      Port:  xz          |
-------------------------+------------------------
Changes (by ryandesign):

 * status:  assigned => closed
 * keywords:   => sierra
 * resolution:   => invalid


Comment:

 It built fine on our buildbot system.

 Your log shows you're using clang 703.0.31, which is from Xcode 7.3.1,
 which is not compatible with Sierra. Please upgrade to Xcode 8 and the
 Xcode 8 version of the command line tools, then `sudo port clean xz` and
 try again.

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Ticket URL: <https://trac.macports.org/ticket/52721#comment:3>
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