/usr/share/doc/llvm-3.4-examples/Makefile.rules is in llvm-3.4-examples 1:3.4-1ubuntu3~precise2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/llvm-3.4-examples/../../../lib/llvm-3.4/build/Makefile.rules