[MacPorts] #43738: gnuplot: upgrade to 5.0

[MacPorts]

#43738: gnuplot: upgrade to 5.0
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  Reporter:  mojca@…  |      Owner:  mojca@…
      Type:  update   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:  haspatch
      Port:  gnuplot  |
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Comment (by devans@…):

 Replying to [comment:10 mojca@…]:
 > Replying to [comment:7 devans@…]:
 > > Dependency issue:
 > >
 > > gnuplot will optionally build with libcerf support if that port is
 installed.  Probably should add this as a dependency or explicitly disable
 this feature (don't see an obvious configure option to do this though).
 >
 > Weird. Because I was the creating a port for libcerf and I was
 complaining to gnuplot developers that they need to add better support for
 searching for libcerf to `configure.in`. And I forgot to add dependency.
 The dependency is totally optional (I don't know what it's used for), it's
 small (the compressed binary package is 54K) and has no further
 dependencies on its own. So maybe I should just include it
 unconditionally.

 Yes, I'd just add the dependency.  My understanding is that it adds
 additional scripting commands based on the functionality of libcerf.  One
 of the included demos, cerf.dem, illustrates this usage.

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Ticket URL: <https://trac.macports.org/ticket/43738#comment:13>
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