[MacPorts] #55875: octave-control @3.0.0: ld: library not found for -lgfortran

[MacPorts]

#55875: octave-control @3.0.0: ld: library not found for -lgfortran
-----------------------------+-------------------------
  Reporter:  ATL-Flaneur     |      Owner:  Schamschula
      Type:  defect          |     Status:  assigned
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.4.2
Resolution:                  |   Keywords:
      Port:  octave-control  |
-----------------------------+-------------------------

Comment (by ATL-Flaneur):

 Regarding:

 {{{
 :info:configure ld: warning: directory not found for option
 '-L/opt/local/lib/gcc7/gcc/x86_64-apple-darwin17/7.2.0'
 }}}

 I have a `7.3.0` directory on my system but not `7.2.0`. I created `7.2.0`
 as a symlink to `7.3.0`, and the install went fine.

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Ticket URL: <https://trac.macports.org/ticket/55875#comment:3>
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