https://bugzilla.gnome.org/show_bug.cgi?id=663421

--- a/pygtk-2.0.pc.in
+++ b/pygtk-2.0.pc.in
@@ -12,6 +12,7 @@
 includedir=@includedir@
 datarootdir=@datarootdir@
 datadir=@datadir@
+libdir=@libdir@
 pyexecdir=@pyexecdir@
 
 # you can use the --variable=pygtkincludedir argument to
