[MacPorts] #38512: RFE: add a `configure.objcxx` variable

[MacPorts]

#38512: RFE: add a `configure.objcxx` variable
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  Reporter:  egall@…      |      Owner:  larryv@…
      Type:  enhancement  |     Status:  closed
  Priority:  Normal       |  Milestone:  MacPorts 2.3.0
 Component:  base         |    Version:  2.1.3
Resolution:  fixed        |   Keywords:
      Port:               |
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Changes (by jmr@…):

 * milestone:  MacPorts Future => MacPorts 2.3.0


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Ticket URL: <https://trac.macports.org/ticket/38512#comment:12>
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