/usr/lib/pkgconfig/libtins.pc is in libtins-dev 3.4-2build1.
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
includedir=${prefix}/include
Name: libtins
Description: C++ packet crafting, sniffing and interpretation library.
Version: 3.4
Libs: -L${libdir} -ltins
Cflags: -I${includedir}/tins
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