[MacPorts] #17922: db47 fails to configure if ${prefix}/lib/tclConfig.sh does not exist

[MacPorts]

#17922: db47 fails to configure if ${prefix}/lib/tclConfig.sh does not exist
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 Reporter:  ricci@…             |       Owner:  mcalhoun@…           
     Type:  defect              |      Status:  new                  
 Priority:  Normal              |   Milestone:  Port Bugs            
Component:  ports               |     Version:  1.7.0                
 Keywords:                      |        Port:  db47                 
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 The db47 port enables tcl (in the configure phase) but does not require
 tcl as a dependency.  Thus if tcl is not installed via macports, db47
 configure fails as it cannot find ${prefix}/lib/tclConfig.sh

 Suggested fix: move the --enable-tcl and related configure options into a
 variant.

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Ticket URL: <http://trac.macports.org/ticket/17922>
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