[MacPorts] #30009: Choose default compiler based on Xcode version

[MacPorts]

#30009: Choose default compiler based on Xcode version
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  Reporter:  jeremyhu@…             |       Owner:  macports-tickets@…                   
      Type:  enhancement            |      Status:  closed                               
  Priority:  Normal                 |   Milestone:  MacPorts Future                      
 Component:  base                   |     Version:  1.9.99                               
Resolution:  fixed                  |    Keywords:                                       
      Port:                         |  
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Changes (by jmr@…):

  * status:  new => closed
  * resolution:  => fixed


Comment:

 r80088 - made two more changes:
  * gcc-4.2 is not compatible with the 10.4 SDK so use gcc-4.0 when
 targeting it
  * only set CC=/usr/bin/cc in selfupdate if we're on Darwin

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Ticket URL: <https://trac.macports.org/ticket/30009#comment:3>
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