--- gcc/config/i386/sysv3.h	2018/04/24 18:10:27	1.1.1.1
+++ gcc/config/i386/sysv3.h	2018/04/24 18:30:37	1.1.1.3
@@ -15,7 +15,8 @@ GNU General Public License for more deta
 
 You should have received a copy of the GNU General Public License
 along with GNU CC; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
 
 
 #include "i386/i386.h"
@@ -41,7 +42,7 @@ the Free Software Foundation, 675 Mass A
 
 /* Specify predefined symbols in preprocessor.  */
 
-#define CPP_PREDEFINES "-Dunix -Di386"
+#define CPP_PREDEFINES "-Dunix -Di386 -Asystem(unix) -Asystem(svr3) -Acpu(i386) -Amachine(i386)"
 
 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
 
@@ -53,6 +54,14 @@ the Free Software Foundation, 675 Mass A
 
 #undef ASM_FILE_START_1
 #define ASM_FILE_START_1(FILE)
+
+/* We want to be able to get DBX debugging information via -gstabs.  */
+
+#undef DBX_DEBUGGING_INFO
+#define DBX_DEBUGGING_INFO
+
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
 
 /* longjmp may fail to restore the registers if called from the same
    function that called setjmp.  To compensate, the compiler avoids