--- ORBit2-2.14.19.orig/ORBit-2.0.pc.in	2010-02-09 13:05:35.000000000 +0100
+++ ORBit2-2.14.19/ORBit-2.0.pc.in	2011-03-25 21:11:02.000000000 +0100
@@ -2,7 +2,7 @@ prefix=@prefix@
 exec_prefix=@exec_prefix@
 libdir=@libdir@
 includedir=@includedir@
-orbit_idl=@bindir@/orbit-idl-2@EXEEXT@
+orbit_idl=${prefix}/../@bindir@/orbit-idl-2@EXEEXT@
 
 
 Name: ORBit-2.0
