[MacPorts] #49801: __GMP_CC incorrectly has -isysroot ... in __GMP_CC

[MacPorts]

#49801: __GMP_CC incorrectly has -isysroot ... in __GMP_CC
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  Reporter:  jeremyhu@…  |      Owner:  mcalhoun@…
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.3.4
Resolution:              |   Keywords:
      Port:  gmp         |
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Comment (by mcalhoun@…):

 I posted a query on an upstream mailing list under the heading
 "[https://gmplib.org/list-archives/gmp-
 discuss/2015-November/thread.html#5910 appending to cflags instead of
 replacing]."

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Ticket URL: <https://trac.macports.org/ticket/49801#comment:4>
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