/usr/lib/x86_64-linux-gnu/ is in libpcscada5-dev 0.7.3-1.1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/ada/
/usr/lib/x86_64-linux-gnu/ada/adalib/
/usr/lib/x86_64-linux-gnu/ada/adalib/pcscada/
/usr/lib/x86_64-linux-gnu/ada/adalib/pcscada/pcsc-scard-conversion.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/pcscada/pcsc-scard-monitor.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/pcscada/pcsc-scard-utils.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/pcscada/pcsc-scard.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/pcscada/pcsc-thin-ifdhandler.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/pcscada/pcsc-thin-reader.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/pcscada/pcsc-thin.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/pcscada/pcsc-version.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/pcscada/pcsc.ali
/usr/lib/x86_64-linux-gnu/libpcscada.a
/usr/lib/x86_64-linux-gnu/libpcscada.so