--- gcc/config/sparc/pbd.h	2018/04/24 18:10:25	1.1.1.1
+++ gcc/config/sparc/pbd.h	2018/04/24 18:15:18	1.1.1.2
@@ -26,7 +26,7 @@ the Free Software Foundation, 675 Mass A
 /* Names to predefine in the preprocessor for this target machine.  */
 
 #undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-Dsparc -DUnicomPBD -Dunix -D__GCC_NEW_VARARGS__"
+#define CPP_PREDEFINES "-Dsparc -DUnicomPBD -Dunix -D__GCC_NEW_VARARGS__ -Asystem(unix) -Acpu(sparc) -Amachine(sparc)"
 
 /* We want DBX format for use with gdb under COFF.  */