--- gcc/config/m68k/apollo68.h	2018/04/24 18:10:24	1.1.1.1
+++ gcc/config/m68k/apollo68.h	2018/04/24 18:14:37	1.1.1.2
@@ -75,7 +75,7 @@ the Free Software Foundation, 675 Mass A
 /* These are the ones defined by Apollo, plus mc68000 for uniformity with
    GCC on other 68000 systems.  */
 
-#define CPP_PREDEFINES "-Dapollo -Daegis -Dunix"
+#define CPP_PREDEFINES "-Dapollo -Daegis -Dunix -Asystem(unix)  -Acpu(m68k) -Amachine(m68k)"
 
 /* cpp has to support a #sccs directive for the /usr/include files */