[MacPorts] #39151: cflow 1.0 Build error with clang

[MacPorts]

#39151: cflow 1.0 Build error with clang
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  Reporter:  matt.a.olson@…  |      Owner:  gnn@…
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.1.3
Resolution:                  |   Keywords:
      Port:  cflow           |
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Comment (by jfilippidis@…):

 The current cflow Portfile has an outdated version (1.0), whereas the
 current one is 1.4 and its installation does not suffer from this issue.
 See [ticket:39824].

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Ticket URL: <https://trac.macports.org/ticket/39151#comment:4>
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