--- gcc/config/m68k/3b1.h	2018/04/24 18:10:24	1.1.1.1
+++ gcc/config/m68k/3b1.h	2018/04/24 18:14:17	1.1.1.2
@@ -80,7 +80,7 @@ output_file_directive ((FILE), main_inpu
 /* ihnp4!lmayk!lgm@eddie.mit.edu says mc68000 and m68k should not be here.  */
 
 #undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-Dmc68k -Dunix -Dunixpc"
+#define CPP_PREDEFINES "-Dmc68k -Dunix -Dunixpc -D__motorola__ -Asystem(unix)  -Asystem(svr3) -Acpu(m68k) -Amachine(m68k)"
 
 #undef REGISTER_NAMES
 #define REGISTER_NAMES \
@@ -181,7 +181,10 @@ do { long l;					\
 /* The beginnings of sdb support... */
 
 #define ASM_OUTPUT_SOURCE_FILENAME(FILE, FILENAME) \
-  fprintf (FILE, "\tfile\t\"%s\"\n", FILENAME)
+  do {	fprintf (FILE, "\tfile\t");		\
+	output_quoted_string (FILE, FILENAME);	\
+	fprintf (FILE, "\n");			\
+  } while (0)
 
 #define ASM_OUTPUT_SOURCE_LINE(FILE, LINENO)	\
   fprintf (FILE, "\tln\t%d\n",			\
@@ -509,3 +512,10 @@ do { fprintf (asm_out_file, "\ttag\t");
 #define UMODSI3_LIBCALL "*ulrem"
 #define MULSI3_LIBCALL "*lmul"
 #define UMULSI3_LIBCALL "*ulmul"
+
+/* Definitions for collect2.  */
+
+#define OBJECT_FORMAT_COFF
+#define NO_SYS_SIGLIST
+#define MY_ISCOFF(magic) \
+ ((magic) == MC68KWRMAGIC || (magic) == MC68KROMAGIC || (magic) == MC68KPGMAGIC)