[MacPorts] #56941: cmake @3.12.0_0 and gcc7 @7.3.0_3 don't work well together

[MacPorts]

#56941: cmake @3.12.0_0 and gcc7 @7.3.0_3 don't work well together
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  Reporter:  iqgrande    |      Owner:  michaelld
      Type:  defect      |     Status:  closed
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.5.3
Resolution:  worksforme  |   Keywords:
      Port:  cmake, gcc  |
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Comment (by michaelld):

 @basmac: Thanks for reporting! Seems like "cctools" is causing issues with
 other installs, too. See e.g., #56943.

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Ticket URL: <https://trac.macports.org/ticket/56941#comment:19>
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