http://sourceforge.net/mailarchive/forum.php?thread_id=8959304&forum_id=5348
http://gcc.gnu.org/PR24836

--- gcc/gcc/configure.ac
+++ gcc/gcc/configure.ac
@@ -2446,7 +2446,7 @@
 	tls_first_minor=14
 	tls_as_opt="-m64 -Aesame --fatal-warnings"
 	;;
-  sh-*-* | sh[34]-*-*)
+  sh-*-* | sh[34]*-*-*)
     conftest_s='
 	.section ".tdata","awT",@progbits
 foo:	.long	25
--- gcc/gcc/configure
+++ gcc/gcc/configure
@@ -14846,7 +14846,7 @@
 	tls_first_minor=14
 	tls_as_opt="-m64 -Aesame --fatal-warnings"
 	;;
-  sh-*-* | sh[34]-*-*)
+  sh-*-* | sh[34]*-*-*)
     conftest_s='
 	.section ".tdata","awT",@progbits
 foo:	.long	25