/usr/lib/pkgconfig/libsysfs.pc is in libsysfs-dev 2.1.0+repack-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 | prefix=/usr
exec_prefix=${prefix}
libdir=/lib
includedir=${prefix}/include/sysfs/
Name: libsysfs
Description: interface to sysfs
Version: 2.1.0
Libs: -L${libdir} -lsysfs
Cflags: -I${includedir}
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