[MacPorts] #53382: webp pull in a lot of Xorg dependencies through freeglut

[MacPorts]

#53382: webp pull in a lot of Xorg dependencies through freeglut
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  Reporter:  F30          |      Owner:  ryandesign
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  webp         |
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Comment (by F30):

 So I'm not really into OpenGL and only have a rough idea of what's going
 on here, but digging through webp's `configure` I found the `--with-
 glincludedir` and `--with-gllibdir` options which specify where to look
 for GL. Could they help here?

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Ticket URL: <https://trac.macports.org/ticket/53382#comment:4>
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