[MacPorts] #54370: gmic @2.0.2: buildbot build gets cancelled because 20 minutes go by with no output

[MacPorts]

#54370: gmic @2.0.2: buildbot build gets cancelled because 20 minutes go by with no
output
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  Reporter:  ryandesign  |      Owner:  Schamschula
      Type:  defect      |     Status:  reopened
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:  haspatch
      Port:  gmic        |
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Comment (by cooljeanius):

 maybe instead of switching the entire `-O` level, find the specific `-f`
 pass that's slowing down the build and then switch it off with `-fno-`
 instead? I think there are people in the GCC community that have compile
 flag bisectors/reducers; not sure if they also work for clang, though...

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Ticket URL: <https://trac.macports.org/ticket/54370#comment:30>
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