/usr/lib/x86_64-linux-gnu/pkgconfig/papi-5.4.3.pc is in libpapi-dev 5.4.3-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/pkgconfig/papi-5.4.3.0.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/papi-5.4.3.0.pc