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

[MacPorts]

#34385: Support gcc47 and gcc48 on ppc
-------------------------------------+--------------------------------------
  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       |  
-------------------------------------+--------------------------------------

Comment(by darylew@…):

 I've been doing other stuff for several weeks.  When I updated my copy of
 `gcc46`, it also automatically tried to update my copy of `gcc47`.  It
 used my Apple GCC 4.0.1 system compiler, and ended with the same error
 that GCC 4.6 does (can't link in several functions from the C++ runtime
 library).  I'll try redoing it with Apple GCC 4.2 and see if it solves it
 like for `gcc46`.

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Ticket URL: <https://trac.macports.org/ticket/34385#comment:27>
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