[MacPorts] #56669: ldns 1.7.0 ./configure fails to find the SDK on MacOS X <= 10.6

[MacPorts]

#56669: ldns 1.7.0 ./configure fails to find the SDK on MacOS X <= 10.6
-------------------------+-------------------------------
  Reporter:  grumpybozo  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.5.2
Resolution:              |   Keywords:  haspatch upstream
      Port:  ldns        |
-------------------------+-------------------------------
Changes (by grumpybozo):

 * Attachment "configure.ac.diff" added.

 Patch to configure.ac

-- 
Ticket URL: <https://trac.macports.org/ticket/56669>
MacPorts <https://www.macports.org/>
Ports system for macOS