[MacPorts] #33041: expat: configure: error: C compiler cannot create executables

[MacPorts]

#33041: expat: configure: error: C compiler cannot create executables
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  Reporter:  srabanti@…            |       Owner:  macports-tickets@…                   
      Type:  defect                |      Status:  reopened                             
  Priority:  Normal                |   Milestone:                                       
 Component:  ports                 |     Version:  2.0.3                                
Resolution:                        |    Keywords:                                       
      Port:  expat                 |  
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Comment(by macsforever2000@…):

 How did you check that Xcode 4.2.1 was installed correctly? So what is the
 output of the following?

 {{{
 clang -v
 }}}

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Ticket URL: <https://trac.macports.org/ticket/33041#comment:4>
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