[MacPorts] #21548: ATLAS does not compile x86_64

[MacPorts]

#21548: ATLAS does not compile x86_64
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  Reporter:  macport-snhhome@…               |       Owner:  jameskyle@…                   
      Type:  defect                          |      Status:  reopened                      
  Priority:  Normal                          |   Milestone:                                
 Component:  ports                           |     Version:                                
Resolution:                                  |    Keywords:  snowleopard, x86_64, universal
      Port:  atlas                           |  
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Comment(by vince@…):

 Atlas is not at that time universal. It requires two steps in order to be
 built universal. First, compile a gcc43 or gcc44 with the --multilib
 option, so it can compile in both m32 and m64 mode. Next, Atlas itself
 must be compiled twice, once with -m32 and once with -m64. Unfortunately,
 this is not easy, even when muniversal1.0 is enabled.

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Ticket URL: <http://trac.macports.org/ticket/21548#comment:6>
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