[MacPorts] #59798: base should always set ${configure.sdkroot} and $env(SDKROOT) to some value, even, in the end "/".

[MacPorts]

#59798: base should always set ${configure.sdkroot} and $env(SDKROOT) to some
value, even, in the end "/".
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  Reporter:  kencu        |      Owner:  (none)
      Type:  enhancement  |     Status:  closed
  Priority:  Normal       |  Milestone:
 Component:  base         |    Version:
Resolution:  wontfix      |   Keywords:
      Port:               |
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Comment (by jmroot):

 If you want to add a separate variable that always contains a path, that's
 also fine.

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Ticket URL: <https://trac.macports.org/ticket/59798#comment:11>
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