[MacPorts] #41476: vigra: "vigra-config --docdir" shows a path in the build directory

[MacPorts]

#41476: vigra: "vigra-config --docdir" shows a path in the build directory
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  Reporter:  ryandesign@…  |      Owner:  benjamin.seppke@…
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.2.1
Resolution:                |   Keywords:
      Port:  vigra         |
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Comment (by benjamin.seppke@…):

 Okay, this error must have been there for some (longer) time already.

 The reason for this is that the vigra-config script is generated during
 CMake's configure step. Inside the config/vigra-config.in file @DOCDIR@ is
 the variable, which will be replaced by CMake with the wrong directory.

 However, this misbehaviour can be patched quite easy, as you may see in
 the Portfile.diff, which I appended to this topic.

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Ticket URL: <https://trac.macports.org/ticket/41476#comment:1>
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