[MacPorts] #17578: gdal links with libraries it doesn't declare dependencies on

[MacPorts]

#17578: gdal links with libraries it doesn't declare dependencies on
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 Reporter:  ryandesign@…             |       Owner:  seanasy@…        
     Type:  defect                   |      Status:  new              
 Priority:  Normal                   |   Milestone:  Port Bugs        
Component:  ports                    |     Version:  1.7.0            
 Keywords:                           |        Port:  gdal             
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Comment(by ryandesign@…):

 So, the moral is, a port must declare dependencies on things it links
 with. If the software can optionally link with something, the port must
 either declare a dependency on it, or it must disable the feature so that
 it never links with it even if the library is present. If you want to make
 features available optionally in your port, then you make variants which
 remove the disable configure switch and add the enable configure switch
 and the dependency for that feature.

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Ticket URL: <http://trac.macports.org/ticket/17578#comment:3>
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