[MacPorts] #45170: gtk-doc: remove source-highlight dependency or make it optional

[MacPorts]

#45170: gtk-doc: remove source-highlight dependency or make it optional
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  Reporter:  ryandesign@…  |      Owner:  devans@…
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.3.1
Resolution:                |   Keywords:  haspatch
      Port:  gtk-doc       |
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Changes (by devans@…):

 * keywords:   => haspatch


Comment:

 Attached is a patch that adds a variant to enable highlighting using
 source-highlight and makes it the default for SL and later.  Highlighting
 and the dependency on source-highlight are removed for older platforms or
 if -highlighting is asserted on newer ones.  I think this is what you want
 but let me know if this works for you.  You should verify that gtk-doc
 works for you on the target platform by building a port that uses it to
 generate API documentation.  A good example is appstream-glib (#44546).

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Ticket URL: <https://trac.macports.org/ticket/45170#comment:7>
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