[MacPorts] #31948: apple-gcc42: change behavior of the -isysroot option

[MacPorts]

#31948: apple-gcc42: change behavior of the -isysroot option
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  Reporter:  royliu@…             |       Owner:  royliu@…           
      Type:  defect               |      Status:  closed             
  Priority:  Normal               |   Milestone:                     
 Component:  ports                |     Version:  2.0.3              
Resolution:  fixed                |    Keywords:  haspatch           
      Port:  apple-gcc42          |  
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Comment(by jeremyhu@…):

 Regression: #34233

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Ticket URL: <https://trac.macports.org/ticket/31948#comment:12>
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