[MacPorts] #54217: gdb 7.12.1 does not work on macOS Sierra

[MacPorts]

#54217: gdb 7.12.1 does not work on macOS Sierra
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  Reporter:  plinss  |      Owner:
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.4.1
Resolution:          |   Keywords:  gdb
      Port:  gdb     |
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Changes (by plinss):

 * Attachment "Portfile-rrdtool.diff" added.

 Patch to portfile

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Ticket URL: <https://trac.macports.org/ticket/54217>
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