/usr/lib/gcc-cross/arm-linux-gnueabi/4.7/liblto_plugin.so is in cpp-4.7-arm-linux-gnueabi 4.7.3-12ubuntu1cross1.85.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/gcc-cross/arm-linux-gnueabi/4.7/liblto_plugin.so.0.0.0