/usr/lib/x86_64-linux-gnu/pkgconfig/libi8x.pc is in libi8x-dev 0.0.5-1.
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=/usr
libdir=/usr/lib/x86_64-linux-gnu
includedir=/usr/include
Name: libi8x
Description: Infinity note execution library
Version: 0.0.5
Libs: -L${libdir} -li8x
Cflags: -I${includedir}
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