/usr/alpha-linux-gnu/lib/libgomp.so.1 is in libgomp1-alpha-cross 6.3.0-18cross1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/alpha-linux-gnu/lib/libgomp.so.1.0.0
/usr/alpha-linux-gnu/lib/libgomp.so.1.0.0