/usr/arm-linux-gnueabi/libhf/libc_nonshared.a is in libc6-dev-armhf-armel-cross 2.19-0ubuntu2cross1.104.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/arm-linux-gnueabi/libhf/../../arm-linux-gnueabihf/lib/libc_nonshared.a