[MacPorts] #57074: libcxx does not build

[MacPorts]

#57074: libcxx does not build
---------------------+--------------------
 Reporter:  oldsalo  |      Owner:  (none)
     Type:  defect   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:  2.4.2
 Keywords:           |       Port:  libcxx
---------------------+--------------------
 With MacOS 10.6.8

 Error: Cannot install llvm-4.0 for the arch 'x86_64' because

 Error: its dependency libcxx does not build for the required arch by
 default

 Error: and the configured universal_archs 'i386 ppc' are not sufficient.

 Error: Follow https://guide.macports.org/#project.tickets to report a bug.

 Error: Processing of port llvm-4.0 failed

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Ticket URL: <https://trac.macports.org/ticket/57074>
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