/usr/lib/x86_64-linux-gnu/ is in nescc 1.3.5-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/ncc/
/usr/lib/x86_64-linux-gnu/ncc/nesc1
/usr/lib/x86_64-linux-gnu/ncc/tdspecs
/usr/lib/x86_64-linux-gnu/ncc/genpython.pm
/usr/lib/x86_64-linux-gnu/ncc/nesc_nx.h
/usr/lib/x86_64-linux-gnu/ncc/genjava.pm
/usr/lib/x86_64-linux-gnu/ncc/genc.pm
/usr/lib/x86_64-linux-gnu/ncc/gencstpython.pm
/usr/lib/x86_64-linux-gnu/ncc/deputy_stage2.h
/usr/lib/x86_64-linux-gnu/ncc/gencstc.pm
/usr/lib/x86_64-linux-gnu/ncc/deputy_stage1.h
/usr/lib/x86_64-linux-gnu/ncc/migdecode.pm
/usr/lib/x86_64-linux-gnu/ncc/gencsharp.pm
/usr/lib/x86_64-linux-gnu/ncc/gencstjava.pm
/usr/lib/x86_64-linux-gnu/ncc/nesc.jar
/usr/lib/x86_64-linux-gnu/ncc/deputy_nodeputy.h
/usr/lib/x86_64-linux-gnu/ncc/nesc-compile