[MacPorts] #34233: apple-gcc42 doesn't honor -isysroot correctly

[MacPorts]

#34233: apple-gcc42 doesn't honor -isysroot correctly
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 Reporter:  jeremyhu@…             |       Owner:  jeremyhu@…           
     Type:  defect                 |      Status:  new                  
 Priority:  Normal                 |   Milestone:                       
Component:  ports                  |     Version:  2.0.4                
 Keywords:                         |        Port:  apple-gcc42          
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Comment(by jeremyhu@…):

 Possibly related to #31948

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Ticket URL: <https://trac.macports.org/ticket/34233#comment:2>
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