/usr/lib/x86_64-linux-gnu/pkgconfig/libpaje.pc is in libpaje-dev 1.2+git20150818.b1de7cfee5-2.
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=${prefix}
libdir=${exec_prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include
Name: paje
Description: A library to read, simulate and filter paje traces prior to visualization
Version: 1
Libs: -L${libdir} -lpaje
Cflags: -I${includedir}
|