UPDATE: truecrypt-5.1a-ubuntu-x64 is now available from truecrypt.com so there’s no apparent need to compile your own amd64 deb (unless you’re so paranoid, of course).
No problems with ld neither this time.
buliwoof: are you on Ubuntu? It seems to me we’re not using the same ld version or yours lacks some options.
Please check you have ld version 2.17.50 20070103 or newer.
For reference, my old article on patching and compiling is here