[MacPorts] #23277: curl links with c-ares if present

[MacPorts]

#23277: curl links with c-ares if present
-------------------------------------+--------------------------------------
 Reporter:  ryandesign@…             |       Owner:  ryandesign@…           
     Type:  defect                   |      Status:  new                    
 Priority:  Normal                   |   Milestone:                         
Component:  ports                    |     Version:  1.8.2                  
 Keywords:                           |        Port:  curl                   
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 {{{
 $ otool -L /opt/local/lib/libcurl.dylib
 /opt/local/lib/libcurl.dylib:
         /opt/local/lib/libcurl.4.dylib (compatibility version 6.0.0,
 current version 6.1.0)
         /opt/local/lib/libcares.2.dylib (compatibility version 3.0.0,
 current version 3.0.0)
         /opt/local/lib/libssl.0.9.8.dylib (compatibility version 0.9.8,
 current version 0.9.8)
         /opt/local/lib/libcrypto.0.9.8.dylib (compatibility version 0.9.8,
 current version 0.9.8)
         /opt/local/lib/libz.1.dylib (compatibility version 1.0.0, current
 version 1.2.3)
         /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
 version 125.0.0)
 }}}

 curl should declare a dependency on c-ares or not link with
 libcares.dylib.

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Ticket URL: <http://trac.macports.org/ticket/23277>
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