[MacPorts] #38393: couchdb fails during start after Xcode 4.6.1

[MacPorts]

#38393: couchdb fails during start after Xcode 4.6.1
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 Reporter:  public+macports@…  |      Owner:  macports-tickets@…
     Type:  defect             |     Status:  new
 Priority:  Normal             |  Milestone:
Component:  ports              |    Version:  2.1.3
 Keywords:                     |       Port:
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 After upgrading to Xcode 4.6.1 Couchdb no longer starts. The error was:

 dyld: Symbol not found: __cg_png_create_info_struct
   Referenced from:
 /System/Library/Frameworks/ImageIO.framework/Versions/A/ImageIO
   Expected in: /opt/local/lib/libPng.dylib

 As a temporal solution I modified the installed launchctl file removing
 the DYLD_LIBRARY_PATH section

       <key>DYLD_LIBRARY_PATH</key>
       <string>/opt/local/lib:$DYLD_LIBRARY_PATH</string>

 After removing that line, the ImageIO framework seems to load just find
 and CouchDB server starts

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Ticket URL: <https://trac.macports.org/ticket/38393>
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