/usr/lib/x86_64-linux-gnu/pkgconfig/libguess.pc is in libguess-dev 1.2-1.1.
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 11 12 13 14 | prefix=/usr
exec_prefix=${prefix}
datarootdir=${prefix}/share
data_dir=${datarootdir}/libguess
version=1.2
include_dir=${prefix}/include/libguess
lib_dir=${prefix}/lib/x86_64-linux-gnu
Name: libguess
Description: A library which is used for blind character set detection.
Version: 1.2
Libs: -L${lib_dir} -lguess
Cflags: -I${include_dir}
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