[MacPorts] #34385: Support gcc47 and gcc48 on ppc

[MacPorts]

#34385: Support gcc47 and gcc48 on ppc
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  Reporter:  boby.foulcan@…          |       Owner:  jeremyhu@…           
      Type:  defect                  |      Status:  reopened             
  Priority:  Normal                  |   Milestone:                       
 Component:  ports                   |     Version:  2.0.4                
Resolution:                          |    Keywords:  Leopard ppc          
      Port:  gcc42 gcc47 gcc48       |  
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Comment(by tobias.netzel@…):

 Replying to [comment:28 darylew@…]:
 Those warnings are because of ld64.
 The "-mlong-branch" warning should be disabled in the ld64 port when
 building for Tiger.
 The "N_GSYM stabs" warning is because ld64 doesn't support stabs debug
 symbols (default until Xcode 2.3 I think) as well as dwarf debug symbols
 (default from Xcode 2.4 on). gcc should be configured with "--with-dwarf2"
 to get rid of this warning.

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Ticket URL: <https://trac.macports.org/ticket/34385#comment:30>
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