--- SimGear-0.3.10.old/acinclude.m4	2005-02-22 20:16:31.000000000 +0100
+++ SimGear-0.3.10/acinclude.m4	2006-07-29 19:56:36.000000000 +0200
@@ -99,7 +99,14 @@
 		incdir="${exdir}/include${subexdir}"
 		wi_EXTRA_IDIR($incdir)
 
-		mylibdir="${exdir}/lib${subexdir}"
+		case "${host}" in
+		*x86_64*)
+			mylibdir="${exdir}/lib64${subexdir}"
+			;;
+		*)
+			mylibdir="${exdir}/lib${subexdir}"
+			;;
+		esac
 		wi_EXTRA_LDIR($mylibdir)
 
 		progdir="${exdir}/bin${subexdir}"