[MacPorts] #63028: gimp2 @2.10.22: build failures; broken configure script, possibly due to obsolete m4 macros?

[MacPorts]

#63028: gimp2 @2.10.22: build failures; broken configure script, possibly due to
obsolete m4 macros?
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  Reporter:  mascguy  |      Owner:  dbevans
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  gimp2    |
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Comment (by mascguy):

 UPDATE: This port just built successfully for Big Sur ARM on 5/27/2021,
 despite warnings related to obsolete `m4` macros. So perhaps there's some
 other problem. (And I suppose it could be something related to my system.
 Hmmmm.)

 https://build.macports.org/builders/ports-11_arm64-builder/builds/20949

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Ticket URL: <https://trac.macports.org/ticket/63028#comment:1>
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