/usr/lib/x86_64-linux-gnu/ is in libkrb5-dev 1.12+dfsg-2ubuntu4.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/libkadm5clnt.so
/usr/lib/x86_64-linux-gnu/libkdb5.so
/usr/lib/x86_64-linux-gnu/libkadm5srv.so
/usr/lib/x86_64-linux-gnu/libkadm5srv_mit.so
/usr/lib/x86_64-linux-gnu/libgssapi_krb5.so
/usr/lib/x86_64-linux-gnu/pkgconfig/krb5-gssapi.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/krb5.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/kdb.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/kadm-server.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/gssrpc.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/kadm-client.pc
/usr/lib/x86_64-linux-gnu/libgssrpc.so
/usr/lib/x86_64-linux-gnu/libkadm5clnt_mit.so
/usr/lib/x86_64-linux-gnu/libk5crypto.so
/usr/lib/x86_64-linux-gnu/libkrb5.so
/usr/lib/x86_64-linux-gnu/libkrb5support.so