[MacPorts] #48009: volk @20150521_0 Undefined symbols for architecture x86_64

[MacPorts]

#48009: volk @20150521_0 Undefined symbols for architecture x86_64
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  Reporter:  jpdevillers@…  |      Owner:  michaelld@…
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.3.3
Resolution:                 |   Keywords:
      Port:  volk           |
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Comment (by daniel@…):

 I have the same problem on OS X Lion (Darwin 11.4.2), where Xcode 4.6.3
 '''is''' the latest version; see XcodeVersionInfo. My workaround was to
 build variant +cxx11 which also blacklists clang and then builds with
 gcc49.

 The solution going forward will likely be to blacklist all "old" clang
 versions (<5.0 from your experience).

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Ticket URL: <https://trac.macports.org/ticket/48009#comment:6>
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