Index: src/librrd.pc.in
--- src/librrd.pc.in.orig
+++ src/librrd.pc.in
@@ -6,5 +6,5 @@ includedir=@includedir@
 Name: librrd
 Description: Library for the RRDtool
 Version: @PACKAGE_VERSION@
-Libs: -L${libdir} -lrrd
+Libs: -L${libdir} -lrrd -Wl,-rpath-link,${X11BASE}/lib
 Cflags: -I${includedir}