[MacPorts] #51933: Error installing dolfin - command execution failed

[MacPorts]

#51933: Error installing dolfin - command execution failed
----------------------------+--------------------
  Reporter:  sarah_frank@…  |      Owner:  sean@…
      Type:  defect         |     Status:  closed
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.3.4
Resolution:  worksforme     |   Keywords:
      Port:  dolfin         |
----------------------------+--------------------

Comment (by sean@…):

 I'm kind of out of ideas here. What version of clang is this?

 {{{
 $ clang -v
 Apple LLVM version 7.3.0 (clang-703.0.31)
 Target: x86_64-apple-darwin15.6.0
 Thread model: posix
 InstalledDir:
 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
 }}}

 Have you kept your xcode / command-line tools updated?

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Ticket URL: <https://trac.macports.org/ticket/51933#comment:5>
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