diff --git a/gcc/config/m68k/xm-crds.h b/gcc/config/m68k/xm-crds.h
new file mode 100644
index 00000000000..64b9c2ef09c
--- /dev/null
+++ b/gcc/config/m68k/xm-crds.h
@@ -0,0 +1,21 @@
+#define USG
+
+#ifndef unos
+#define unos
+#endif
+
+#include "xm-m68k.h"
+
+#define bcopy(a,b,c) memcpy (b,a,c)
+#define bzero(a,b) memset (a,0,b)
+#define bcmp(a,b,c) memcmp (a,b,c)
+
+/* Avoid conflict with C library by changing name of this symbol.  */
+#define gettime gcc_gettime
+
+#ifndef __GNUC__
+#define USE_C_ALLOCA
+#else
+#define alloca __builtin_alloca
+#endif
+