/usr/lib/x86_64-linux-gnu/pkgconfig/ubuntuoneauth-2.0.pc is in libubuntuoneauth-2.0-dev 15.11+16.04.20160323.
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 | prefix=/usr
exec_prefix=${prefix}
libdir=${exec_prefix}/lib/x86_64-linux-gnu
includedir=${prefix}/include
Name: ubuntuoneauth-2.0
Description: Client library for Ubuntu One authentication.
Version: 15.10
Libs: -L${libdir} -lubuntuoneauth-2.0
Requires: Qt5Core Qt5DBus Qt5Xml Qt5Network libsignon-qt5 accounts-qt5
Cflags: -I${includedir}/ubuntuoneauth-2.0
|