/usr/arm-linux-gnueabihf/lib/libgomp.so.1 is in libgomp1-armhf-cross 5.3.1-14ubuntu2cross1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/arm-linux-gnueabihf/lib/libgomp.so.1.0.0
/usr/arm-linux-gnueabihf/lib/libgomp.so.1.0.0