[MacPorts] #61509: jbig2dec fails to build on macOS 11.0 (Big Sur)

[MacPorts]

#61509: jbig2dec fails to build on macOS 11.0 (Big Sur)
-----------------------+--------------------
  Reporter:  moyang    |      Owner:  (none)
      Type:  defect    |     Status:  closed
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.6.4
Resolution:  invalid   |   Keywords:  bigsur
      Port:  jbig2dec  |
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Comment (by jmroot):

 Replying to [comment:3 moyang]:
 > I am sure my Xcode version is 12.2 and the command line tools are
 updated.

 If you run `pkgutil --pkg-info=com.apple.pkg.CLTools_Executables` it
 should print (among other things) `version: 12.2.0.0.1.1604628099`. See
 also: ProblemHotlist#reinstall-clt

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Ticket URL: <https://trac.macports.org/ticket/61509#comment:5>
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