title: Library not found for -lXXX
body: <p>If your trying to run an iphone project downloaded from the internet in Xcode and you encounter "Library not found for -lxxx", where -xxx is some third party library where would you look to set the library path? I am not sure where this is setup, in the SCM->library path is blank and everything else seems to match the configuration window for other working projects</p>
  
  <p>When I look at the build log i see the following in the linker output:</p>
  
  <p>-ObjC -ljson</p>
  
  <p>How can i configure the project to not try to link in that library at build time?</p>