[MacPorts] #35770: gcc ports should not include a C++ runtime

[MacPorts]

#35770: gcc ports should not include a C++ runtime
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  Reporter:  jeremyhu@…                           |       Owner:  jeremyhu@…           
      Type:  defect                               |      Status:  reopened             
  Priority:  Normal                               |   Milestone:                       
 Component:  ports                                |     Version:  2.1.2                
Resolution:                                       |    Keywords:  libstdc++            
      Port:  gcc43 gcc44 gcc45 gcc46 gcc47 gcc48  |  
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Comment(by help@…):

 Just tried building with updated gcc46 port - it fails on linking stage.
 As far as I understand, GCC still uses its own C++ headers which do not
 match API/ABI provided by system libstdc++ which results in missing
 symbols. So just removing dylib isn't enough, more work should be done to
 make it work.

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Ticket URL: <https://trac.macports.org/ticket/35770#comment:14>
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