--- config/gen/config_pm/config_pir.in	2009-06-03 14:04:53.000000000 +0200
+++ config/gen/config_pm/config_pir.in	2009-06-05 12:19:12.000000000 +0200
@@ -49,7 +49,7 @@
     $S0 = concat prefix, "/runtime"
     $I0 = stat $S0, .STAT_EXISTS
     if $I0 goto L1
-    conf_file = prefix . "/lib@versiondir@/include/config.fpmc"
+    conf_file = "@libdir@@versiondir@/include/config.fpmc"
     goto L2
   L1:
     conf_file = prefix . "/runtime/parrot/include/config.fpmc"