/usr/lib/pkgconfig/unity-2d-private.pc is in libunity-2d-private-dev 5.10.0-0ubuntu1.
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=/usr
libdir=${exec_prefix}/lib
includedir=${prefix}/include
Name: unity-2d-private
Description: Unity 2d private library
Version: 4.12.0
Requires.private: QtCore, QtDBus, QtDeclarative, QtGui, glib-2.0, gtk+-3.0, libwnck-3.0, pango
Libs: -L${libdir} -lunity-2d-private
Cflags: -I${includedir}/unity-2d-private
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