[MacPorts] #50298: error installing llvm-3.7 when installing pgplot on ElCapitan

[MacPorts]

#50298: error installing llvm-3.7 when installing pgplot on ElCapitan
----------------------------+------------------------
  Reporter:  gwen.barnes@…  |      Owner:  jeremyhu@…
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.3.4
Resolution:                 |   Keywords:
      Port:  llvm-3.7       |
----------------------------+------------------------

Comment (by gwen.barnes@…):

 {{{
 >/usr/bin/clang++ --version
 Apple LLVM version 7.0.2 (clang-700.1.81)
 Target: x86_64-apple-darwin15.2.0
 Thread model: posix

 >/usr/bin/ld -v
 @(#)PROGRAM:ld  PROJECT:ld64-253.9
 configured to support archs: armv6 armv7 armv7s arm64 i386 x86_64 x86_64h
 armv6m armv7k armv7m armv7em (tvOS)
 LTO support using: Apple LLVM 7.0.2 (clang-700.1.81)

 }}}

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Ticket URL: <https://trac.macports.org/ticket/50298#comment:3>
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