--- ardour3/wscript	2011-09-30 11:47:17.512014005 -0400
+++ ardour3-build/wscript	2011-09-30 12:40:39.717455245 -0400
@@ -655,7 +655,7 @@
     obj.source       = 'ardour.rc.in'
     obj.target       = 'ardour_system.rc'
     obj.dict         = rc_subst_dict
-    obj.install_path = '${SYSCONF}/ardour3'
+    obj.install_path = os.path.join(bld.env['SYSCONFDIR'],'ardour3')
 
 def i18n(bld):
     bld.recurse (i18n_children)