Thanks man...I had already tried that without success. But, having tried to do it again, and having Googled it some more, I realised I needed to update XCode, and re-install the XCode command line tools via the terminal (as instructed in the "Before you begin" part of fpc-3.2.0.intel-macosx.dmg) which makes sense as I had jumped up two versions of OSX. Then when I did the Clean All and Build in Lazarus, the Linkin error no longer occurred.