[MacPorts] #34288: clang ports use the old/dated libstdc++ from the host (gcc-4.2 based)

[MacPorts]

#34288: clang ports use the old/dated libstdc++ from the host (gcc-4.2 based)
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  Reporter:  christophe.prudhomme@…                                    |       Owner:  jeremyhu@…           
      Type:  defect                                                    |      Status:  closed               
  Priority:  Normal                                                    |   Milestone:                       
 Component:  ports                                                     |     Version:  2.0.4                
Resolution:  fixed                                                     |    Keywords:                       
      Port:  clang-2.9 clang-3.0 clang-3.1 clang-3.2 libstdc++ libc++  |  
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Comment(by stephen@…):

 Then I am not quite sure why this fix is needed. Before this fix, when
 using -stdlib=libc++ on 10.7, clang automatically uses headers in
 /usr/include/c++/v1 and links against /usr/lib/libc++.dylib. And when
 using the same option on 10.6, one need to build and install libc++ from
 source which includes both the headers and the dylib.

 Or is this only for when -stdlib=libc++ is NOT used?

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Ticket URL: <https://trac.macports.org/ticket/34288#comment:27>
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