diff --git a/gcc/config.gcc b/gcc/config.gcc
index 69d0a024d85..0c1637e8be1 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -248,6 +248,12 @@ md_file=
 # Obsolete configurations.
 case ${target} in
   tile*-*-*				\
+  avr*-*-*				\
+  h8300*-*-*				\
+  cris*-*-*				\
+  m68k*-*-*				\
+  vax*-*-*				\
+  cr16*-*-*				\
  )
     if test "x$enable_obsolete" != xyes; then
       echo "*** Configuration ${target} is obsolete." >&2
@@ -273,7 +279,6 @@ case ${target} in
  | arm*-*-uclinux*			\
  | i[34567]86-go32-*			\
  | i[34567]86-*-go32*			\
- | m68k-*-uclinuxoldabi*		\
  | mips64orion*-*-rtems*		\
  | pdp11-*-bsd				\
  | powerpc*-*-linux*paired*		\
@@ -294,7 +299,6 @@ case ${target} in
  | *-*-solaris2.[0-9].*			\
  | *-*-solaris2.10*			\
  | *-*-sysv*				\
- | vax-*-vms*				\
  )
 	echo "*** Configuration ${target} not supported" 1>&2
 	exit 1