[MacPorts] #16745: Allow macports to compile with apple's gcc 4.2

[MacPorts]

#16745: Allow macports to compile with apple's gcc 4.2
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  Reporter:  illogical1 at gmail.com                                                                                |       Owner:  macports-tickets at lists.macosforge.org
      Type:  defect                                                                                              |      Status:  new                                  
  Priority:  Normal                                                                                              |   Milestone:  Port Bugs                            
 Component:  ports                                                                                               |     Version:  1.6.0                                
Resolution:                                                                                                      |    Keywords:  fix compilation gcc 4.2 apple-gcc42  
      Port:  expat giflib ilmbase jasper lcms libgpg-error libvorbis lzmautils openexr subversion tiff flac pth  |  
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Comment(by illogical1 at gmail.com):

 This is only a problem when apple's gcc 4.2 is used in tiger, as I
 realized while talking to afb on irc. I'll have to test whether updating
 libtool fixes this.
 So the status is this

 on tiger with gcc 4.0, compilation works.
 on leopard with gcc 4.2, compilation works (for the one port I tested).
 on tiger with gcc 4.2 compilation breaks @ linking.

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Ticket URL: <http://trac.macports.org/ticket/16745#comment:4>
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