--- config.guess	2019-02-11 14:12:46.200044600 +0100
+++ config.guess.x	2019-02-28 09:09:19.676537800 +0100
@@ -1433,6 +1433,30 @@
 	exit ;;
 esac
 
+eval $set_cc_for_build
+cat >$dummy.c <<EOF
+main ()
+{
+#if defined (sony)
+#if defined (MIPSEB)
+  /* BFD wants "bsd" instead of "newsos".  Perhaps BFD should be changed,
+     I don't know....  */
+  printf ("mips-sony-bsd\n"); exit (0);
+#else
+#include <sys/param.h>
+  printf ("m68k-sony-newsos%s\n",
+#ifdef NEWSOS4
+          "4"
+#else
+          ""
+#endif
+         ); exit (0);
+#endif
+#endif
+  exit (1);
+}
+EOF
+
 echo "$0: unable to guess system type" >&2
 
 case "$UNAME_MACHINE:$UNAME_SYSTEM" in