[MacPorts] #56647: octave @4.4.0_3 fails to build when using Apple's clang compiler

[MacPorts]

#56647: octave @4.4.0_3 fails to build when using Apple's clang compiler
--------------------------+---------------------------------
  Reporter:  josephsacco  |      Owner:  MarcusCalhoun-Lopez
      Type:  defect       |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.5.2
Resolution:               |   Keywords:
      Port:  octave       |
--------------------------+---------------------------------

Comment (by josephsacco):

 As predicted, the build using Apple's clang with 'ld64 _ld64_xcode'
 completed without error.

 FWIW... I also tried building using Macport's gcc7.  'configure' rejected
 Apple's vecLib.  Instead, it found and used atlas @3.10.2_2, which I had
 installed last October.  The build died while compiling a graphicsMagick
 support file.    If the details are useful,  I can rerun the gcc7+atlas
 build and submit the log file.


 -Joseph

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Ticket URL: <https://trac.macports.org/ticket/56647#comment:4>
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