/usr/lib/pkgconfig/botan-1.10.pc is in libbotan1.10-dev 1.10.8-2+deb8u2.
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 | prefix=/usr
exec_prefix=${prefix}
libdir=${prefix}/lib
includedir=${prefix}/include/botan-1.10
Name: Botan
Description: Multi-platform C++ crypto library
Version: 1.10.8
Libs: -L${libdir} -lbotan-1.10
Libs.private: -lbz2 -lcrypto -ldl -lgmp -lpthread -lrt -lz
Cflags: -I${includedir}
|