--- gcc/config/m88k/sysv3.h	2018/04/24 18:10:22	1.1
+++ gcc/config/m88k/sysv3.h	2018/04/24 18:13:49	1.1.1.2
@@ -30,7 +30,7 @@ the Free Software Foundation, 675 Mass A
 
 /* Macros to be automatically defined.  */
 #undef	CPP_PREDEFINES
-#define CPP_PREDEFINES "-Dm88000 -Dm88k -Dunix -DsysV88 -D__CLASSIFY_TYPE__=2"
+#define CPP_PREDEFINES "-Dm88000 -Dm88k -Dunix -DsysV88 -D__CLASSIFY_TYPE__=2 -Asystem(unix) -Asystem(svr3) -Acpu(m88k) -Amachine(m88k)"
 
 /* Override svr3.h to link with ?crt0.o instead of ?crt1.o and ?crtn.o.
    From arul@sdsu.edu.  */