/usr/lib/x86_64-linux-gnu/pkgconfig/libplist.pc is in libplist-dev 1.11-3.
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 11 | prefix=/usr
exec_prefix=${prefix}
libdir=${prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include
Name: libplist
Description: A library to handle Apple Property Lists whereas they are binary or XML
Version: 1.11
Requires.private: libxml-2.0 >= 2.7.8
Libs: -L${libdir} -lplist
Cflags: -I${includedir}
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