[MacPorts] #26880: devel/swig add dependency on PCRE

[MacPorts]

#26880: devel/swig add dependency on PCRE
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 Reporter:  rmstonecipher@…             |       Owner:  kevin@…           
     Type:  defect                      |      Status:  new               
 Priority:  Normal                      |   Milestone:                    
Component:  ports                       |     Version:  1.9.1             
 Keywords:                              |        Port:  siwg              
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 SWIG 2.0.1 failed to configure because I did not have PCRE
 installed.[[br]]
 I do not know if port:pcre or port:pcrexx (the C++ bindings) should be a
 library dependency or a build dependency.

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Ticket URL: <https://trac.macports.org/ticket/26880>
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