[MacPorts] #54552: LLVM Issue [ Cannot select: intrinsic %llvm.x86.sse.cvtpi2ps ] when installing volk

[MacPorts]

#54552: LLVM Issue [ Cannot select: intrinsic %llvm.x86.sse.cvtpi2ps ] when
installing volk
---------------------+-----------------------
  Reporter:  har5ha  |      Owner:  michaelld
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.4.1
Resolution:          |   Keywords:  lion
      Port:  volk    |
---------------------+-----------------------

Comment (by michaelld):

 I started writing this before your edit. I'll post it anyway as is.

 There's nothing you need to do about PortGroups. We use them for common
 code, shared between multiple ports. In this case, the cxx11 1.1 PortGroup
 changes the compiler to one that supports C++11 compliance. For your
 specific Mac OS X version, the compiler should end up being "macports-
 clang-4.0", or the clang-4.0 port.

 Thus, when you do a "sudo port selfupdate" if this clang-4.0 port is not
 yet installed, it will be -- and, that takes quite a bit of compile time.

 Hope this helps!

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Ticket URL: <https://trac.macports.org/ticket/54552#comment:10>
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