--- configure.orig	2008-03-31 02:56:46.446699394 -0400
+++ configure	2008-03-31 03:05:58.758342355 -0400
@@ -12492,6 +12492,15 @@
     *-*-*openbsd*)
         ac_cv_c_ieee_interface=openbsd
         ;;
+    sparc64-*-*bsd*)
+        ac_cv_c_ieee_interface=unknown
+        ;;
+    alpha-*-*bsd*)
+        ac_cv_c_ieee_interface=unknown
+        ;;
+    ia64-*-*bsd*)
+        ac_cv_c_ieee_interface=unknown
+        ;;
     *-*-*bsd*)
         ac_cv_c_ieee_interface=freebsd
         ;;