[MacPorts] #64113: xxhashlib @0.8.1_0: build failure: static_assert undefined

[MacPorts]

#64113: xxhashlib @0.8.1_0: build failure: static_assert undefined
------------------------+-------------------------
  Reporter:  macdeport  |      Owner:  Schamschula
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.7.1
Resolution:             |   Keywords:  yosemite
      Port:  xxhashlib  |
------------------------+-------------------------

Comment (by ryandesign):

 `static_assert` is a C++11 feature. Try indicating `compiler.cxx_standard
 2011` in the Portfile to let MacPorts choose a newer compiler.

 The port has a section that applies a patch only for gcc 4. Since gcc 4
 doesn't support C++11 that section and the patchfile can probably be
 removed.

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Ticket URL: <https://trac.macports.org/ticket/64113#comment:3>
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