diff -ur a/configure.ac b/configure.ac
--- a/configure.ac	2011-10-31 19:40:02.000000000 +0100
+++ b/configure.ac	2011-10-31 19:41:02.372745481 +0100
@@ -1624,7 +1624,6 @@
 		  	linux_alpha=yes
 			;;
 		  i*86|amd64*|x86_64*|ia64*)
-			linux_acpi="yes"
 			;;
 		  *)
 			;;