[MacPorts] #53021: octave @4.2.0_1: Another build failure

[MacPorts]

#53021: octave @4.2.0_1: Another build failure
---------------------+---------------------------------
  Reporter:  mf2k    |      Owner:  MarcusCalhoun-Lopez
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  octave  |
---------------------+---------------------------------

Comment (by mf2k):

 {{{
 $ xcode-select --install
 xcode-select: error: command line tools are already installed, use
 "Software Update" to install updates

 $ softwareupdate -l
 Software Update Tool
 Copyright 2002-2015 Apple Inc.

 Finding available software
 No new software available.
 }}}

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Ticket URL: <https://trac.macports.org/ticket/53021#comment:3>
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