Index: src/driver/cfa.cc
===================================================================
--- src/driver/cfa.cc	(revision e3215c5bb07cd38ca72ccb2ce6de6057811328c5)
+++ src/driver/cfa.cc	(revision a83d08b7728236fad05fcab221cfd4c08dcbce85)
@@ -10,6 +10,6 @@
 // Created On       : Tue Aug 20 13:44:49 2002
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Sat May 12 17:07:53 2018
-// Update Count     : 240
+// Last Modified On : Mon May 14 07:52:50 2018
+// Update Count     : 243
 //
 
@@ -253,8 +253,8 @@
 	} // for
 
-//    if ( MACHINE_TYPE == "x86_64" ) {
-//		args[nargs] = "-mcx16";							// allow double-wide CAA
-//		nargs += 1;
-//    } // if
+#ifdef __x86_64__
+	args[nargs] = "-mcx16";								// allow double-wide CAA
+	nargs += 1;
+#endif // __x86_64__
 
 #ifdef __DEBUG_H__