Article:		Creating Spotlight Plugins
Subject:		Linker errors ...
Date:		2005-07-18 06:37:26
From:		SADev
I'm getting the following during linking ... /usr/bin/ld: Undefined symbols: _GetMetadataForFile .objc_class_name_NSConstantString .objc_class_name_NSDate .objc_class_name_NSMutableArray .objc_class_name_NSMutableAttributedString .objc_class_name_NSMutableDictionary .objc_class_name_NSNumber .objc_class_name_NSObject .objc_class_name_Protocol __NSConstantStringClassReference _objc_msgSend _objc_msgSendSuper collect2: ld returned 1 exit status I've #import'd foundation and cocoa. What's up?

Showing messages 1 through 2 of 2.

• Linker errors ...
  2005-07-18 07:56:38  Matthew Russell | [View]
  
  
  A couple of things to consider when tackling these kinds of problems:
  
  -Are you using the project file that's provided and getting this error, or did you follow along, building up the project from scratch and get this error? If you followed along, you might want to download the project file provided and compare the two to see what's up. I can build the one provided without any modifications on both XCode 2.0 and 2.1 and get a clean build.
  
  -One thing to pay particular attention to when linking is to remember that while #import-ing things gets you successful compilation, you still have to add the required frameworks to the project (left hand pane under the "External Frameworks..." folder) to get it to link successfully.
  
  -Did you rename GetMetadataForFile.c to GetMetadataForFile.m ? I get an error very similar to the one you get if this file isn't renamed to have a ".m" extension.
  
  Try these things out and let me know what happens. No doubt, your experieces will save someone time when they have similar encounters.
• Linker errors ...
  2005-07-18 11:00:50  SADev [View]
  
  
  I had forgotten to add the frameworks to my project. D'oh!