+# See if we have thread-local storage. We can only test assembler
+# sicne link-time and run-time tests require the newly built
+# gcc, which can't be used to build executable due to that libgcc
+# is yet to be built here.
+
+ # Check whether --enable-tls or --disable-tls was given.
+if test "${enable_tls+set}" = set; then
+ enableval="$enable_tls"
+
+ case "$enableval" in
+ yes|no) ;;
+ *) { { echo "$as_me:$LINENO: error: Argument to enable/disable tls must be yes or no" >&5
+echo "$as_me: error: Argument to enable/disable tls must be yes or no" >&2;}
+ { (exit 1); exit 1; }; } ;;
+ esac
+
+else
+ enable_tls=yes
+fi;
+
+ echo "$as_me:$LINENO: checking whether the target asssembler upports thread-local storage" >&5
+echo $ECHO_N "checking whether the target asssembler upports thread-local storage... $ECHO_C" >&6
+if test "${gcc_cv_have_cc_tls+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+ cat >conftest.$ac_ext <<_ACEOF
+__thread int a; int b; int main() { return a = b; }
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+ (eval $ac_compile) 2>conftest.er1
+ ac_status=$?
+ grep -v '^ *+' conftest.er1 >conftest.err
+ rm -f conftest.er1
+ cat conftest.err >&5
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } &&
+ { ac_try='test -z "$ac_c_werror_flag"
+ || test ! -s conftest.err'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; } &&
+ { ac_try='test -s conftest.$ac_objext'
+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ gcc_cv_have_cc_tls=yes
+else
+ echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+gcc_cv_have_cc_tls=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+echo "$as_me:$LINENO: result: $gcc_cv_have_cc_tls" >&5
+echo "${ECHO_T}$gcc_cv_have_cc_tls" >&6
+set_have_cc_tls=
+if test "$enable_tls $gcc_cv_have_cc_tls" = "yes yes"; then
+ set_have_cc_tls="-DHAVE_CC_TLS"
+fi
+
+