diff -uraN monodevelop-1.9.orig/configure.in monodevelop-1.9/configure.in
--- monodevelop-1.9.orig/configure.in	2008-06-30 19:36:01.000000000 +0200
+++ monodevelop-1.9/configure.in	2008-08-08 03:36:14.161240666 +0200
@@ -308,7 +308,7 @@
 AC_SUBST(CSC_FLAGS)
 
 
-MD_DIR='$(prefix)/lib/monodevelop'
+MD_DIR='$(libdir)/monodevelop'
 MD_ASSEMBLY_DIR="$MD_DIR/bin"
 MD_ADDIN_DIR="$MD_DIR/AddIns"
 
diff -uraN monodevelop-1.9.orig/monodevelop-core-addins.pc.in monodevelop-1.9/monodevelop-core-addins.pc.in
--- monodevelop-1.9.orig/monodevelop-core-addins.pc.in	2008-06-30 19:36:01.000000000 +0200
+++ monodevelop-1.9/monodevelop-core-addins.pc.in	2008-08-08 03:36:14.164239140 +0200
@@ -1,6 +1,6 @@
 prefix=@prefix@
 exec_prefix=${prefix}
-libdir=${exec_prefix}/lib/monodevelop
+libdir=@libdir@/monodevelop
                                                                                 
 Name: MonoDevelop Core Add-ins
 Description: MonoDevelop Core Add-ins